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TECHNICAL SPECIFICATIONS FOR

CIVIL WORKS

MAY 2017

PROJECT: ELECTION COMISSION DATA CENTRE BUILDING UNDP ELECTORAL SUPPORT PROJECT (UNDP ESP) KATHMANDU, NEPAL

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SAFETY IN CONSTRUCTION:

The contractor shall employ only such methods of construction, tools and plant as are appropriate for the type of work or as approved by A/E in writing. The contractor shall take all precautions and measures to ensure safety of works and workman and shall be fully responsible for the same. Safety pertaining to construction works such as excavation, centering and shuttering, trenching, blasting, demolition, electric connections, scaffolds, ladders, working platforms, gangway, mixing of bituminous materials, electric and gas welding, use of hoisting and construction machinery shall be governed by safety code, relevant safety codes and the direction of A/E.

EARTHWORK EXCAVATION:

Before the earthwork is started, the whole area where the work is to be done shall be cleared of grass, roots of trees and other organic matter. Site preparation shall consist of clearing grubbing and removal of any and all inappropriate materials. The excavation shall be carried out in accordance with the dimension shown on the drawings. If the soil at the specified depth is found to be unsuitable, then it shall be dug to a depth at which a stratum of good hard soil is found as directed by the consultant. Besides digging the earth, the word excavation signifies the all the works related such as dressing of the sides, ramming of bottom, disposing of any soil not required out of site, and keeping the outer edge of excavation. Sides of the trenches shall be vertical and its bottom shall be perfectly levelled, both longitudinally and transversely. The Contractor shall dispose off all surplus excavated soil at his own cost as directed by the Consultant. Materials deemed not necessary or appropriate for the project shall be removed at the time of excavation. No material excavated from foundation trenches, shall be placed nearer than one meter to the outer edge of the excavation. The excavation shall be carefully executed as per the dimensions and elevations on drawing and the established ‘Benchmark’ at the site. The contractor accepts full responsibility to alien the building and slabs in reference to these given elevations. Should any of the excavation be taken below the specified levels, the Contractor shall fill such excavation at his own expense with concrete well rammed in position until it is brought up to the proper levels; filling in with excavated materials will not be allowed for this purpose. If foundations are made broader or longer than directed, the extra length and breadth shall be filled in after the foundations are built with earth rammed and compacted, at the Contractor’s expense.

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If the excavation is in earth, the bottom of the trenches shall be sprinkled with sufficient water to bring the soil to its optimum moisture and compacted to meet stated percentage of compaction. Any excess digging or any patches of bad soils or hollows shall be removed by placing concrete or shall be subject to any other special treatment as per the decision of A/E. Where the soil is soft, loose or slushy the trench shall be widened for allowing steps on either sides or the sides sloped or shored up. During excavation if rocks or rocky soils are found, (if approved as suitable for foundation), those shall be levelled as far as possible and the small spaces which are difficult to level shall be filled in with concrete. Water in trenches must be bailed or pumped out and where it is apprehended that the sides may fall down arrangements shall be made for adequate timber shoring. The Contractor shall at his own expense, make provision for all extra excavation in slope, pumping, dredging or bailing out water from the trenches and keep free of water during the laying of foundation works. When it is specified that the work is to be carried out without removing pipes, cables, sewers etc. all of them shall be temporarily shored and saved from any damage. The materials or valuable found during excavation shall be the property of the Government. The cost of all materials and labour required for fencing in and protection against risk of accidents due to open excavation shall be borne by the contractor. Care shall be taken in the disposal of water from the excavation to limit any damage to existing infrastructures or joining properties. The Contractor shall also at his own cost remove such portions of boulders or rocks and the remains of the old dismantled structures as are required to make the bottom of the trench horizontal and level. If unseen underground structures, high strength concrete, are encountered, extra payment shall be provided to the contractor with mutual understanding. If during excavation, exception conditions are encountered that the contractor deems outside of “normal” materials for excavation, the work shall not cease but documentation of the conditions shall be done immediately. Payment shall be done after a mutual agreement of cost and time alterations have been reached. The contractor needs to submit the purposed plan and schedule, how the excavation shall be proceed. Before the implementation of the work, the materials required the equipments to be used need to be properly verified. Since the safety factor is directly related to the excavation, the contractor need to finish the job within the allocated period of time until and unless the contractor can provide a valid reason. As the excavation phase offers many hazards, the contractor shall have on site any and all needed materials to protect the open excavation and warn any persons in or near the excavated areas before any excavation work shall commence.

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1. Shoring and Protection: The contractor shall be responsible for all needed protection of adjacent structures, installation and design shall be his sole responsibility. The consultant and client shall assist as needed but implementation and protection shall be with the contractor. Any verifiable claims initiated out of this work shall be rectified at the contractors own expanse. It is advisable for the contractors that they maintain a record of all the existing surrounding buildings in the area. It would be very useful, in-case certain claims occurs for the damage of the neighbouring building during the excavation of the site. Client and consultant shall assist as needed as per requirement for the unnecessary claims, if proper management and records are maintained. The contractor accepts sole responsibility for any damage to adjoining properties incurred in the performance of the work. It is highly recommended that a record of all adjoining properties be maintained at site (photos and brief written descriptions) The client and consultant can if requested assist in developing this record, with-out accepting responsibility for it thoroughness. When the depth of foundation is below 3.5 m, and where shoring is necessary, all the aspect shall depend upon the type of soil; the Contractor shall be responsible for the design of shoring for proper excavation. Shoring shall be of sufficient strength to resist side pressure ensuring safety from slippage, preventing damage to work and property and injury to persons. It shall be metal sheet piling or any other approved means strong enough to retain the earth and protect the existing structures against any damages. The contractor shall prepare and submit the method, details and process of such shoring to the consultant before starting earthwork for the basement or as per the specification. It shall be removed as directed after all the items for which it is required are completed. Foundation pits, well pits and similar excavation shall be securely fenced and marked with red lights at night and be in charge of watchmen to avoid accidents. Adequate protective measures shall be taken to see that the foundation excavations do not affect or damage adjoining structures. All measures required for the safety of the excavation, the people working in and near the foundation trenches, property and the people in the vicinity should be the responsibility of the Contractor. The Contractor shall be entirely responsible for any injury to life and damage to property caused by his negligence or accidents due to his construction operations. The work will be in two stages: this includes excavation of the basement and earth filling works. The contractor will ensure that for both stages all safety measures for the excavated areas with necessary fencing, lighting etc are provided on instruction and approval of the consultant. No extra shall be paid in this connection unless otherwise specified. Any excavation deeper than 3.5 m shall be deemed as mandatory for placement of properly designed shoring to protect workers and work at the perimeter of the excavation, any other areas found to be unstable, shall at the request of the A/E be stabilized with properly designed shoring. Design and methods shall be approved as per the stated criteria by the consultant prior to any further work in those areas.

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2. De-watering: The Contractor shall not be paid extra for bailing out or pumping out of all water which may accumulate in the excavation during the progress of the work either from seepage, springs, rain or any other source; any equipment shall be removed after their purpose is served. Any soils deemed saturated and unfit to support foundation shall be removed and replaced with materials of appropriate substance to support the structure. Placement shall be as per requirements to bare the weight of the structure and minimize and future settling. The act of dewatering shall in no way be a determent to the community at large or inflict any undue stress on the communities' infrastructure. Pumping water from any foundation enclosure or trenches shall be generally in such a manner as to preclude the possibility of any damage to the foundation trenches, concrete or masonry or any adjacent structures. The excavation shall be kept free from water (i) during inspection and measurement, (ii) when concrete and/or masonry works are in progress and until they come above the natural water level and (iii) until the Consultant considers that the concrete/mortar is sufficiently set. 3. Trimming and levelling: The bottom of all foundation should be trimmed and levelled in accordance with the Drawings. The bottom of the foundation shall be rammed and watered before concrete is deposited. The term “watered” shall be deemed to mean a condition of water content giving optimum consolidation of the soil in the compaction process, it shall not mean a condition reflecting total saturation of the soil, or flooding. Measurement: The excavation shall be measured correct up to 1cm and be the product of the exact length and width of the lowest step of the footings according to the drawings or the Consultant’s instructions and the depth measured vertically. Where the ground is not level, average depth shall be taken. Rate shall be inclusive of all the works described above. Extra payment shall be made for the extra lift involved beyond 5 m up to 10 m, under this item. Measurement shall be the exact length, breadth and depth beyond 4m. The contractor shall be allowed to excavate extra space for the comfort to work along side the trenches, but additional excavated area need to be properly filled as mentioned above and no extra shall be paid to the contractor.

EARTH FILLING:

Earth used for filling shall be loose, free from brick-bats, stones, boulders not larger than 75 mm in any direction, salts, organic or other foreign matter. Normally excavated earth from the same are shall be used for filling. However, if such earth contains deleterious material, salt-petre earth etc. the same shall not be used.

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No black cotton soil or any other inappropriate materials shall not be use for the backfilling works. The contractor and consultant shall confer as to the appropriateness of the material to be used. If other material must be imported to the site, the consultant shall give an approval prior to bring on site. The earth for filling shall be brought from outside the site, to be approved by the Consultant prior to filling. The spaces around the foundations, pipes and drains in trenches shall be cleared of all debris, brick-bats etc. The fillings shall be done in layers, not exceeding 15 cm each layer. Each layer shall be watered, rammed and consolidated before the succeeding one is laid. Earth shall be rammed with proper compaction machines, as required by the site condition. Special care shall be taken that no damage is caused to the pipes, drains and masonry in the trenches below. In case of filling under floors the finished level of filling shall be kept sloping, as intended to be given to the floor. All lines and levels for excavation, filling and backfilling work shall be based on the consultants' benchmark or reference point, and survey work shall be done under the direction of a civil engineer or surveyor retained by the contractor. During the earth filling, the contractor needs to make necessary arrangements such that earth is properly consolidated. The contractor need to ensure that adequate amount of water is left on top of the daily filled earth so that proper consolidation occurs. The contractor shall test the compacted earth if desired by the A/E or the client. The density for the back fill earth shall not be less than 95% of the proctor density to the original earth unless specified in the BOQ or as approved by the A/E. Measurement: The measurement shall be taken for the consolidated thickness of earth/sand and paid in cubic meter after filling to the required level. No extra shall be paid for transportation, delivery, filling etc in case filling of borrowed earth.

FLAT BRICK SOLING:

The contractor should submit the sample pieces of those bricks for the approval before execution of the work. The bricks shall be in dry condition and shall be laid on the bed as headers with frog upwards. The base on which the brick soling is to be laid, on flat, shall be levelled and compacted properly. The bricks on flat shall be laid true to line, levelled and patterned as required. The bricks shall be closely packed to each other as far as practicable and gaps shall be blinded with sand. No cut bricks are permitted for soling unless otherwise specified. After laying bricks for soling, they shall be compacted for uniform

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level and tightness whilst not damaging the felt underneath. The finished surface shall be levelled both longitudinally and transversely. Measurement: The measurement shall be the net area of actual work done and the rate shall be for all the materials and labour inclusive of sand blinding in joints.

CEMENT:

The cement used for reinforced concrete works shall be ordinary Portland cement of approved brand and manufacture and shall comply in all respects with Portland cement confirming to I.S. 269 up-to-date. The contractor shall use only one brand of cement for the structural portion of the building, therefore arrangements shall be made at the time of commencement of work to have a continual supply of that brand from start to finish. Other brands will be acceptable for other phases of work (i.e. plastering, screed, punning), again mixing of different brands cement in phases such as plastering shall not be allowed. Each phase of work shall be limited to a single brand. It shall be delivered to the site in packages (bags) with an unbroken seal fixed by the makers and plainly marked with the name of the brand and the date of manufacture. The contractor shall weigh the cement bought at site as per the random selection from the A/E. The weight of the cement shall be 50 kg net and shall be fresh. The cements shall be stored in stacks on raised platforms, dry and impervious to water with at least 30 cm clearance from any wall. The cement shall be in regular piles not exceeding ten bags high and in such a manner that it will be protected from moisture and contamination and that the consignments can be used in the order in which they received. The stores for the cement shall be inspected and approved by A/E prior to stacking. Where bulk handling of cement is undertaken protective masks shall be provided fro the workmen. Set cement shall be immediately removed from the site and replaced by the contractor at his own expense. If desired, tests shall be made by taking samples cement from stores or elsewhere from the works. The selection of samples and procedure for testing shall comply with the appropriate I.S. codes. Should the contractor deem it necessary or advantageous to use multiple brands, each brand shall be stored in a separate facility to eliminate confusion and inadvertent mixing of brands during the work. Division of a single facility shall not be acceptable, as monitoring becomes difficult. The minimum compressive of ordinary Portland cement shall be as per I.S. 269 should be 175 kg/cm2 after 7 days and the minimum tensile strength after 7 days should be 25 kg/ cm2. The initial setting time should not be less than 30 minutes and the final setting time should not be more than 10 hours.

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SAND / FINE AGGREGATE:

The fine aggregate (sand) shall confirm to either I.S. 383-1963 or I.S. 515 up-to-date. It shall be clean, sharp, heavy and gritty to touch. Sand should be free from clay, mica, vegetable and organic matter or any other foreign matter. River and pit sand should be used as this does not contain common salt in large quantities. Sand should be perfectly dry before it is used, otherwise the bulking effect of sand must be taken into account. Sand must be cleaned by screening before its use. If a sample of sand contains more than 4 to 5 percent of clay, it should be washed thoroughly before use. The percentage of clay lumps shall be determined by examining the various fractions that remain after the material has been tested for grading. Any particles that can be broken with fingers shall be classified as clay lumps and the total percentage of clay limps shall be determined on the basis of the total original weight of the sample. Sand for all cement concrete works must be coarse. It should not pass through I.S. sieve No. 480 (approximately 4.75 mm) and retained on No. 15 sieve (5.5 mm). The fineness modulus of coarse sand shall be determined by taking 500 gms of it from a representative sample of sand and passing it successively through I.S. sieves No. 484, No. 240, No. 120, No. 60, No. 30 and No. 15. Sand used in cement shall be from an approved pit, river sand is not appropriate as the water action on the grains have rounded the edges and reduced the gripping hold of the particle. The pit sand used must be properly washed and free from any kind of mud & clay components. Medium sand may be used in cement mortar for masonry, plastering, pointing etc. and bituminous works of road. Sand filling in plinth, where specified may be done with fine sand. The fineness modulus of fine sand should not be less than one. Fine aggregate shall be preferably stacked in regular stacks on hard surface of platform so as to prevent the admixture of clay, vegetable and other foreign matter. The contractor shall be using different sieve size sand for the different purposes such as structural and non-structural. It is advised that the contractor maintain a proper storage place for different type of sand, in quality such as sieve sizes, origin etc. This shall be very or advantageous to eliminate confusion and inadvertent mixing during the work. Division of a single facility shall not be acceptable, as monitoring becomes difficult.

WATER:

In concrete works the water used for both mixing and curing shall be free from injurious amounts of oils, acids, alkalis, organic materials or other deleterious materials. Potable

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water is generally considered satisfactory for mixing and curing concrete. Water found satisfactory for mixing concrete is also suitable for curing concrete and shall satisfy the recommendations. However, water used for curing concrete should not produce any objectionable stain or unsightly deposit on the concrete surface. The water with a presence of tannic or iron compounds is objectionable. Concreting work shall not commence before a proper storage of sufficient quantity of proper quality water is on site and approved by the consultant. The contractor needs to maintain a proper water storage tank, temporary or permanent, so that there is sufficient water storage for at least 2-3 days. No work requiring water as a part or portion shall commence with out sufficient, proper quality water stored on site prior to start of said works.

COURSE AGGREGATE:

Aggregate, as per IS 383, most of which is retained on 4.75 mm I.S. sieve and containing only so much finer material as is permitted for the various types described below. 1. Quality of Aggregates: Aggregate shall consist of gravel or stone, crushed or uncrushed, or a combination thereof. It shall be hard, strong, dense, durable, clean and free from adherent coatings. As far as possible, flaky, scoriaceous and elongated pieces should be avoided. It shall be obtained from approved quarry. 2. Deleterious Materials: Aggregate shall not contain any harmful material, such as coal, mica, laminated material, clay, alkali, soft fragments, sea-shells, organic impurities etc, in such quantity as affect the strength or durability of the concrete or in addition to the above for reinforced concrete, any materials which might affect the reinforcement. Aggregates which are chemically reactive with the alkalies or cement are harmful, as cracking of concrete may take place. 3. Mechanical Properties of Aggregate: The aggregate crushing value, when determined in accordance with I.S. 2386 (part iv), mechanical properties shall not exceed 45 per cent for aggregate used for concrete other than for wearing surfaces and 30 percent for concrete for wearing surfaces such as runways, roads and pavements. 4. Size and Grading of Aggregate: When coarse aggregate brought to the site is ungraded, single size coarse aggregates of different nominal sizes, confirming to the requirements vide, table given below, shall be mixed at site. Ungraded materials shall not be placed on site, unless pre-approval is issued by the consultant. Any such materials brought to the site shall be placed in a segregated area, so that their accidental incorporation in cement does not happen.

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I.S. Sieve All in aggregate grading 20 mm nominal size Percentage passing

Designation 40 mm nominal size 80 mm 100 - 40 mm 95-100 100 20 mm 45-75 95-100 4.75 mm 25-45 30-50 600 micron 8-30 10-35 150 micron 0-6 0-6 5. Storage: The contractor shall provide means of storing the aggregates at each point where the concrete is made such that (a) each nominal size of coarse aggregate and the fine aggregate shall be kept separated at all times (b) contamination of the aggregates by the ground or other foreign matter shall be effectively prevented at all times and (c) each heap of aggregate shall be capable of freely being drained. The contractor shall ensure that the graded coarse aggregates are tipped, stored and removed from the store in manner that does not cause segregation. The contractor shall make available to the consultant such samples of aggregates, as requires. Such samples shall be collected at the point of discharge of the aggregate to the batching plant. If any such sample doesn't confirm with the specification, the aggregate it represent shall be promptly removed from the site and the contractor shall carry out such modification to the storage arrangements as may be necessary to secure compliance with the specification.

REINFORCEMENT:

The reinforcement shall be of mild steel and medium steel wire, conforming to I.S. 432-1960 or cold twisted steel bars conforming to I.S. 1786-1961 or deformed steel bars conforming to I.S.1139 with up-to-date modification. Bar reinforcement described as "mild steel" shall be plain round hot rolled steel bars. Bar reinforcement described as "tor steel shall be hot rolled deformed bars or cold twisted bras or Fe415 (minimum yield stress of 415 N/mm2). With respect to manufacture, quality, physical properties and related requirements, reinforcement bars of the foregoing description shall comply with appropriate parts of IS Standards 432 (part I). All reinforcement shall be clean and free from loose mill scales, dust and coats of paint, oil or other coatings which may destroy or reduce bond. The steel bar shall be found and capable of being bent (doubled over) without fracture. Joint in the bars should be avoided as far as possible, when joints have to be made an overlap of 45-60 times diameter of the bar shall be given with proper hooks at ends and joints should be staggered. Bigger

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diameter bars should be joined by welding and tested before placing in position. While concreting, steel bars shall be lifted by placing precast cover blocks underneath to 1:2 cement mortar of 2.5 cm x 2.5 cm in section and the thickness of specified cover, 4 cm to 5 cm for columns, 1 cm to 3 cm for beams and 1 cm to 2 cm for slab. During laying and compacting of concrete, the reinforcing bars should move from their positions and bars of laid portions should not be disturbed. 1. Stacking: It is not permissible to dump the reinforcement directly on the ground. To minimize the corrosion, the contractor shall arrange timber beams and joists, a minimum of 200 mm above ground, to stack the reinforcement under a shed roof, or proper cover provision. Heavily corroded reinforcement bought at site shall be rejected. Bars stored on site developing scale or rust shall be cleaned by an approved method as stated in construction norms or as directed by the A/E. 2. Certificate and Tests: For each consignment of reinforcement bars used in the project, the contractor shall supply a certificate giving the ultimate strength, yield stress and elongation and the result of the cold bend test for each type and each size of the bars. Test shall conform to the relevant I.S. Codes. No old reinforcement bars are allowed to be used and shall be removed immediately from the site. The consultant shall test randomly selected samples of reinforcement placed on site, these tests must be preformed prior to installation, bending or fabrication of these materials. 3. Dimensions of Reinforcement Bars: The size of the reinforcement bars described on the working drawings or elsewhere shall be the minimum and the rolling margin and other tolerance shall be wholly above the size. The length of a reinforcement bar shall be not less than the length on the drawing or elsewhere and shall be not more than 50 mm in excess of that length. Bar bending schedules shall be prepared by the contractor based on the reinforcing details, prior to the execution of the work. The contractor shall prepare the bar bending schedule exactly as per the structural drawings and detail. The schedule shall be verified at site by A/E after laying the reinforcement in place and will certify the checking in detail with drawings at site and may add necessary reinforcement bars as per the site condition which will be amendment in the bar bending schedule. After verification, the schedule will be signed by the both parties. All such verified and signed bar bending schedule will be the final quantity and the contractor shall attach in running bill with claim for payment. 4. Bending of Reinforcing Bars: Bars shall be hooked and bent accurately and placed in position as per design and drawings and bound together tight with 20 swg annealed steel wire at their points of intersection. Overall dimensions of bends or internal dimensions of bending or the like shall be within a tolerance of 8 Φ. The internal radius of the bends shall be not be less than four times the

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diameter of the bars unless described to the contrary on the bending list or elsewhere in the drawings. Hooks and other end anchorage bend for mild steel shall be bent to an internal radius of twice the diameter of the bar. This internal radius of the bends of corner binders or stirrups or links shall be half. Bars which have been bent shall not be straightened or re-bent for incorporation in he works without the prior approval of A/E. In case of jacking of reinforcement of reinforcing for vertical and horizontal rebar it shall be mild jacking at a maximum slope of 1:6. Sharp bending or jacking will be rejected. 5. Fixing Reinforcement Bars: Reinforcement bars shall be accurately located and fixed in place by approved means and maintain in the position as described. They shall be bent and fixed in accordance with the procedure specified in I.S. 2502. Bars intended to be in contact shall be securely wired together at all such points with 16 gauge soft iron tying wire or welded. Binders, stirrups and links shall tightly embrace the bars with which they are intended to be in contact and shall be securely wired or, if approved, spot welded thereto. Welding is permitted only in written instruction of A/E. Reinforcement shall be lapped, joined or spliced only at the positions described. Splices and the like found to e necessary elsewhere should be formed only if and as instructed. Lapping shall be provided as shown in the drawings and as permitted. All the hooks in the shear reinforcement shall be at an angle of 450 and fully embedded inside the concrete. The length of the hook shall be a minimum of 75 mm or 10 times dia. plus bend length, which ever is higher unless otherwise instructed by A/E whereas the bars in the beam (top and bottom) shall be L-hooked for minim development length at every end embedded inside the column. In every beam and column joint the column vertical reinforcement shall be tied properly with U-shaped bars of a minimum of 2 numbers unless otherwise said in the structural details. Any laps in the reinforcement shall be as specified in the structural drawings or as directed by A/E. No lap is allowed in the centre for the bottom bars and at the support for the compression in case of beams where as in the case of columns, the lap for vertical reinforcement shall start only above 1/6 of the column height or 600 mm above the beam top level or below the beam bottom level or as otherwise instructed. The lap shall not be more than 50% in one section unless this is impossible to avoid. In every lap length the shear reinforcement shall be in close spacing not exceed 100 mm centre to centre unless specified. All laps shall be staggered. The contractor is not allowed to claim for any kind of laps that has been placed in the site. The contractor needs to manage and need to work for the minimum lap as far as possible. Immediately before concreting, the reinforcement shall be checked for position, cleanliness, and freedom from rust or retarding liquid. Measuring shall be taken to ensure that reinforcing remains correctly in position with required cover during the placing and consolidation of the concrete. All the reinforcement assemblies shall be checked and shall consists of

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Check of cover

Check of bar diameters

Check the numbers of bars or distance between the bars

Check the length of bars

Check splices and their proper location

Check of reinforcement at connections between structural members (e.g. Beam - column connections)

Check of ties at the support and splices The contractor shall inform A/E for final checking of the reinforcement for any concrete work at least 2 working days prior and only after completion of laying conduits pipes for the electrical work and sleeve for sanitary works if any. Any reinforcement left for the future provision of extension, if desired by A/E shall be coated in cement slurry or by any approved means to protect against corrosion. No claims shall be made for such work and all such paint and slurry shall be completely removed, if required, as per the manufacturer's specification. 6. Cover and Spacing of Bars: Unless otherwise described, the clear cover of concrete to the reinforcement shall be as follows:

Raft Slabs: 50 mm or as specified in the working drawings

Vertical Walls: 20 mm or as specified in the working drawings

Slabs: 12 mm or as specified in the working drawings

Beams: 25 mm or as specified in the working drawings

Columns: 35 mm to 40 mm or as specified in the working drawings

Stair case slab: 15 mm or as specified in the working drawings Measurement: The basic measurements of bars of steel reinforcement used in the works shall be calculated as the weight in kg which shall be computed from the size and lengths of the bars or wires (not binding wires) described on the working drawings. No allowance in the weight shall be made for cutting to waste, rolling margin, extra length or other tolerance. The cost of the binding wires shall not be provided. For calculating unit weight of the rebar the contractor shall use the latest version IS code or standard as approved by the A/E and shall follow the same throughout the project work. The contractor's rate for unit weight of reinforcement bars shall be deemed to include all allowances omitted in calculating the weight and for any tolerances and for providing tying wire and cover blocks as specified hereinafter for carriage and handling, for bending and hooking, cranking and for fixing and maintaining in correct position in works. Lap length shall be provided to the contractor, as mentioned in the bar bending schedule. The contractor needs to maintain the minimum number of laps as much as possible with the

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above specification consideration. Other accessories such as chairs, spacers, hooks shall be provided to the contractor as per the laying in the site.

CEMENT CONCRETE WORKS:

1. Materials: All the materials used in the cement concrete such as cement, sand (fine aggregate), coarse aggregate, water, and reinforcement shall be as per the relevant I.S. Codes and/or as per the individual specification presented. 2. Proportion: The proportion of the concrete shall be as mentioned in the Bill of Quantities, Working Drawings etc. The minimum compressive strength for the cement concrete shall be in accordance with I.S. 456-1978 from which the following figures are taken:

Grade Specific characteristics Compressive strength at 28 days M 15 15 N/mm2 M 20 20 N/mm2 M 25 25 N/mm2 M 30 30 N/mm2 The aggregates, both coarse and fine shall be measured by volume with boxes. Cement need not be measured by box; one bag of cement (50 kg) should be considered. Size of measuring box may be 30 cm x 30 cm x 38 cm or equivalent volume. All materials shall be dry, if damp sand is used, compensation shall be made by adding additional sand to the extent required for the bulking of damp sand. Mixing shall be of machine mixing. For small works hand mixing by batches may be allowed but about 10% extra cement need to be added as per the compensation. Work shall be planned to minimize hand mixing, Hand mixing shall be limited to minor repair works and incidental occasions. A box shall be kept on site with the capacity of 10% of a sack of cement (5kg) and used any time hand mixing is being done to meet the requirements for hand mixing. Besides that, for the first batch of mixing for the day, an extra bag of cement is added to the first mix. It is assumed that this shall compensate all the cement being connected to the equipments such as mixture machines, batching trolleys etc. 3. Machine mixing: The mixer drum shall be flushed clean with water. Measured quantity of dry coarse aggregate shall be place first; this shall be followed with measured quantity of fine aggregates and then cement. Aggregates, sand and cement shall be put into the cement concrete mixer to have required proportion as per the Bill of Quantities,

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working Drawings, etc. The machine shall then be revolved to mix materials dry and then water shall be added gradually to the required quantity, 20 to 28 litres, per bag of cement to have the required water cement ratio. The mixing should be thorough to have plastic mix of uniform colour. It requires 11/2 to 2 minutes' revolution for thorough mixing. Mixed concrete shall be unloaded on a masonry platform or on a metal sheet. Output of concrete mixer shall be approximately 15-20 batches per hour. Approximate quantity by water required for cement concrete may be taken 30% by weight of cement plus 5% by weight of total aggregate. The concrete compacted by mechanical vibrators the quantity of water shall be reduced by 20%. 4. Slump: Regular slump test should be carried out to control the addition of water and to maintain the required consistency. A slump of 7.5 cm to 10 cm may be allowed for the building. Slump tests shall be done on a regular basis during batching and placing of concrete, or as directed by the A/E. 5. Formwork: Formwork, centring and shuttering, shall be provided as required, as per standard specifications, before lying concrete confine, to support or to keep the concrete in position. The inner surface of the shuttering shall be oiled to prevent concrete sticking to it. The base and formwork over which concrete to be laid shall be wetted by sprinkling water before the concrete is laid. Forms shall be removed as specified. Formwork shall be removed slowly and carefully without disturbing and damaging concrete. Upon removal of forms any minor voids shall be repaired immediately, deeper voids (25mm or more) shall have a proper patch administered as per the instruction of the A/E, to seal and protect the reinforcement. 6. Laying: No concrete work shall be started until written permission from the A/E is not issued to the contractor. Concrete shall be laid gently (not thrown) in layers not exceeding 15 cm and compacted with mechanical vibrating machine until dense concrete is obtained. Over-vibration which will separate coarse aggregate from concrete should be avoided. After removal of the formwork in due time, the concrete surface shall be free from honey combing, air holes or any other defect. The contractor need to use vibrator as per the recommendation of the consultant no matter what the volume of the concrete for a day shall be done. Concrete shall be laid continuously, if laying is suspended for rest or for the following day, the end shall be sloped at an angel of 300 and made rough for future jointing. When the work is resumed, the previous sloped portion shall be roughened, clean and watered and a grout of neat cement (thick cement slurry) shall be applied and the fresh concrete shall be laid. For successive layer the upper layer shall be laid before the lower layer has set. Every effort shall be made to minimize “cold”/ construction joints, work shall be planned and reviewed with the site engineer prior to commencing and the contractor shall be prepared to extend the labour and site supervision to accomplish pouring in such a fashion.

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For the special areas where mentioned in the drawings, where there shall be not further finishing, the contractor shall to take further precautions such as is required to finish in compliance with the drawings and clients wishes, or as specified by A/E, without any additional cost. The contractor’s failure to comply with the A/E’s stated expectation of finishing shall open themselves to having the pour rejected and loss of payment or removal and replacement in compliance with the finish required. Neat cement punning on the surface is not an option for consideration. It is highly recommended that the contractor to use power trowels in the area of basement where there is no other finishes. This shall assist the work to be completed in faster rate and in satisfaction to the client’s expectation. The contractor shall manage his staff and materials to guaranty compliance with the approved schedule and amount of work to be accomplished on a daily basis, yet maintaining the desired quality. In the specified areas such as ramp, external courtyard, etc., the contractor shall at completion of the concrete placement begin the finishing process which shall at completion render a “broom finish”. The specific broom need to be utilized to complete the specified broom finish required by A/E. "Broom finish" here implies a non-skid concrete surface without application of any kind of additional surface on top of the concrete. The contractor needs to produce the "broom finish" with the application of broom just after the completion of concreting before the concrete is hardened. The contractor may propose alternative methods to accomplish this surface texture, but must receive prior approval from the A/E before commencing the work. 7. Control of Concrete: The contractor shall be called upon to submit representative samples of material to be used for concrete in order that they may be tested at a laboratory and the suitability of materials established. All expenses in connection with the above material tests shall be borne by the contractor. During the progress of the work 15 cm cubes shall be made as per I.S. 456-1978 as necessary and tested in accordance with I.S. 516-1959. A minimum of three cubes shall come from various batches or individual days. The concrete used in the project, from these batches, shall be recorded and properly maintained. The cubes shall be tested for 7 days, 14 days, and 28 days unless directed by A/E. The testing results shall meet the minimum compressive strength mentioned in the structural drawings or specified by the IS Code standard so that the field concrete work has the strength required as per the code or standard for stipulated time period, i.e. for concrete work of M20, the strength must be minimum 27 MPa in 28 days. All such testing shall be done in presence of A/E or his representative. The test result conducted in absence of A/E or his representative shall not be accepted or deemed valid.

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8. Curing: Freshly laid concrete shall be protected from rain by suitable curing. The work should be protected from damage and rain during construction. After about two hours laying, when concrete has begun, to harden, it shall be kept damp by covering with wet gunny bags for 7 days continuously 24 hours. After the 7th day, the contractor needs to make sure that the concrete remains wet during the hot days upto 7 days of casting. If specified curing may be done by covering concrete with special type of waterproof paper so as to prevent water escaping or evaporating. Curing and strength development is an important part of the construction process and failure to maintain the concrete as per the stated parameters shall result in rejection and loss of time. As no time extension shall be administered for removal and replacement of any rejected work which could have been prevented with proper administration of the contract. A/E reserves the full right to hold the concreting works if the proper curing management is not performed before the concreting. A/E holds the total control for curing and has full authority to hold the concreting work using the past curing works as an example. The contractor needs to allocate a separate staff for curing of the concrete for at least 14 days. 9. Repairing Honeycomb: Immediately after stripping the formwork, minor defects and honey combed area shall be patched and the holes filled before the concrete is thoroughly dry. Patch areas shall be chipped away to a 25 mm depth, with regular edges perpendicular to the surface. The contractor needs to mobilize personnel to rectify the honey combing as the formworks are being stripped off the concrete surface. The contractor needs to make necessary arrangement prior to the removal of formwork and needs to complete the work when the concrete is green. 10. Test of Structure: A/E shall instruct for a proper testing mechanism on the works or any part thereof if in the opinion such a test be deemed necessary for one or more of the following reasons:

The site-made concrete test cubes failing to attain the specified strength.

The shuttering being prematurely removed.

Concrete improperly cured. If the contractor is instructed to conduct testing of concrete already placed for any of the previously stated reasons it shall be accomplished at his expense. If the member shows evident failure, changes as are necessary to make the structure adequately strong shall be made free of cost. The entire cost of testing shall be borne by the contractor. If in the course of dismantling, any damage is done to the embedded items and or other adjacent structures, the same shall be made good free of charge by the contractor to the satisfaction of A/E.

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If the results of the tests are not satisfaction, A/E shall instruct the loading test of the entire structure. If such testing is required by A/E, the member under consideration shall be subjected to a superimposed load equal to one and a quarter (11/4) times the specified superimposed load used for design and this load shall be maintained for a period of 24 hours before removal. The detail procedure of the test is to be decided by A/E. Even after these tests the results obtained are not satisfactory to A/E, the part of the works concerned shall be taken down or removed and reconstructed to comply with the specification, or that such other remedial measures shall be taken as to make the works secure. The contractor needs to bear all the cost for taking out and other remedial works. 11. Anchor Bolts, Anchors, Openings, Sleeves and Other Built-in Fixtures: The contractor shall leave all openings, grooves, chases etc in concrete works as shown on the drawings. It shall embed and secure the same as and when required. The materials required shall be supplied by the contractor and shall be of the best quality available, and shall be to the satisfaction of A/E. Please note that nothing extra shall be paid for any kind of metal anchor bolts, anchors that need to be embedded inside the concrete. Besides that, the sleeves shall also be made of 75-150 mm diameter pipe, for which nothing extra shall be paid. 12. Materials to be Embedded:

Inserts, hangers, opening frames, manholes, covers, floor clips, sleeves and conduits.

Anchor bolts and plates for machinery, equipments and for structural steel works.

Dowel bars etc. for concrete work falling under scoped of future works.

Lugs or plugs for door and window frames occurring in concrete work.

Flashing and jointing in concrete work

Any other built – in fixture as may be required. Correct location, exact alignment, etc. of all these shall be entirely the responsibility of the contractor. 13. Joints: The contractor shall plan and arrange the men and materials to minimize construction/cold joints. The following methods and materials shall be used as acceptable procedures in performance of the contract. i) Expansion and Isolation Joints: Expansion joints in concrete structures shall be provided at specified places as indicated on the drawings. The material and types of joints shall be as specified below.

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ii) Bitumen Boards: Bitumen impregnated fibre of approved manufacture as per I.S. 1838 – latest version shall be used as fillers for expansion joints. iii) Bitumen Compound: The gap for expansion joints shall be thoroughly cleaned and the bitumen compound laid as per manufacture specifications. The compound to be used shall be of approved manufacture and shall conform to the requirement of I.S. 1834 – latest version. iv) Rubber Pad: Hard foundation quality rubber pads of required thickness and shape are to be placed below machine or other foundations where required as shown in the drawings. All these material are discussed in detail within the relevant section specifications. 14. Finishing: The contractor need to provide a fair finished concrete, where ever applicable and suggest. The contractor needs to produce off-form concrete finish as much as possible. The contractor is required to maintain a trowel finish with-in the expectations of the client and A/E, especially in those areas where there is zero level of tolerance. One of the specified areas is the basement where there shall not be any kind of extra floor finish. The contractor needs to complete the concrete as per the clients/A/E’s satisfaction. The contractor needs to discuss and provide the working schedule prior to the commencement of work. The contractor needs to provide a non-skid surface on top of the ramp concrete finishing. In these areas also, the contractor needs to keep special attention such that no additional application shall be provided to get the desired result. The contractor need to properly plan such that once the complete concreting is completed, different set of skilled labour shall be mobilized to produce the specified finish. Prior to the concrete hardening, the contractor needs to apply a typical broom on top of the surface to bring the best broom finishes. 15. Water Proofing Compound: For those areas, such as shear walls of the water tanks, terrace slabs, the contractor needs to mix the water proofing compound within the concrete itself for the extra protection. The contractor needs to get approval of the specification and the brand of the water proofing compound likely to be used prior to the application. Once the water proofing compound is approved, the contractor needs to apply the mix, proportion as per the manufacturer's specification. The contractor holds full responsibility for the water proofing compound in concrete. Measurement: In calculating the contents of any R.C.C. member, for measurement purposes, the dimensions adopted shall be structural concrete members exclusive of any finish. The rates for items shall include cost of all material consumed in the works at all levels, hire charges

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of material, tools and plant, cost of material and labour, insurance, all transport, services, accommodation, supervision, storage, protection etc. all complete. All cement concrete shall be measured in cubic meter of the actual work as per drawings. Nothing extra shall be paid for any odd size or shapes. For all the sleeves, openings, the area more than of 0.1 m2 shall be deducted; where as other small openings shall not be calculated. The contractor is liable to produce off-form finish as much as possible. The finish surface need to be free form board marks, if visible. Nothing extra shall be paid to the contractor for this purpose. It should be noted that in cases of terrace slabs, stores etc where no addition floor finish shall be added; the contractor is fully liable for the completion of concrete as per satisfaction of A/E. If the concrete flooring is not as per specified, the contractor is liable to rejection of the work and replacement or repair as per direction of the A/E. Besides the trowel finish, the contractor is fully liable for the broom finish on the concrete surface of the ramps. The contractor needs to properly manage and mobilize separate skilled labour such that the desired finish can be obtained while concreting itself. It should be strictly noted that no additional surface shall be added on top of these areas to obtain the specified and desired surface. For the application of waterproofing compound in the concrete itself for the critical areas such as shear wall of the water tank, terrace slab, the contractor shall not be additionally paid. The compound, application and labour used are within the cost specifically mentioned. All the concreting works shall be measured as a single unit. Small offset, here and there, and other minor parts of the structure shall also be calculated in a volume basis and shall be paid accordingly as mentioned earlier.

FORMWORK:

Formwork shall be designed and constructed so that concrete can be properly placed and thoroughly compacted. Formwork shall be firmly supported and adequately strutted, braced, or tied. It shall be capable of adjustment to the lines and dimensions of the finished concrete and it shall be sufficiently strong to resist without distortion, the pressure of concrete during its placing and compaction and other loads to which it may be subjected. It shall not be liable to suffer distortion under the influence of the weather. When concrete is to be vibrated, special care shall be taken to ensure that the formwork will remain stable and joints tight, gaps in form panels greater than 5mm shall not be acceptable. The safety and adequacy of centering and shuttering shall be sole responsibility of the contractor.

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Formwork shall include all forms or moulds required for forming the concrete which is cast-in-situ, together with all temporary construction required for their support. 1. Materials for Formwork: Formwork shall be of minimum 19 mm thick water proof plywood or unless otherwise specified. Timber used for formwork shall be easily workable with nails without splitting and of light weight. It shall be stiff and strong enough to avoid undue deflection when loaded and not liable to warp when exposed to sun and rain or wetted during casting of concrete. Formwork shall be of rigid construction true to shape and dimensions shown on drawings. It shall be strong enough to withstand the dead and live loads and forces caused by ramming and vibrations of concrete and other incidental loads imposed upon it during and after casting of concrete. It shall be made sufficiently rigid by using adequate number of braces and ties. To make up any settlement in the formwork either before or during the placing of concrete, hard wood wedges shall be provided where required. Error upto 10 mm shall be under tolerance, so the contractor needs to maintain the materials as well as the workmanship upto the perfect expectation. All form work shall be so constructed as to be removable in section in the desired sequence, without damaging the surface of concrete or disturbing other sections. Forms should be easy to strip after connecting and no piece should be keyed into the concrete. The completed form work shall be approved after inspection by A/E. 2. Propping and Centering: Props used for centering shall be of steel unless otherwise specified. All props shall further be provided with double wedges so as to facilitate tightening and easing of shuttering without causing shock to the concrete. In case a span exceeds 4.5 metres and height exceeds 3.5 meter suitable horizontal as well as vertical and / or diagonal bracings shall be provided after accounting for all forces including action of wind which may produce lateral forces. In case the height of centering exceeds 3.5 meters, the props may be provided in multi-stages. The detail of splicing the props at each stage shall be as per approved drawing. The vertical props shall be erected in spacing of 750-900 mm centre to centre. The erecting of the props for any structural elements directly on the ground will not be accepted. They shall be erected on wooden beams or any approved base on the ground. The horizontal bracing shall be at a spacing of 1000 mm centre to centre vertically. Before the casting of concrete is started, the props and wedges shall be thoroughly checked to see that there are intact, in line of level, and plumb. While the casting of concrete is in progress, at least one carpenter shall keep a constant watch on the props and take immediate remedial measures, as soon as any of them gets loosened.

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3. Shuttering: the shuttering shall be of approved dressed timber of well seasoned boards to give a smooth and even surface and the joints shall not permit leakage of cement grout. The timber shall be free from loose knots, projected nails, splits, adhering grout or other defects that may mar the cement surface of concrete. It shall not be green or wet as to shrink after erection. Species of timber which are not affected appreciably by its contact with water shall be used. When metal forms are used, all bolts and nuts shall be countersunk and well ground to provide a smooth plain surface. Opening for fan clamps and other fittings connected with services shall be provided in the shuttering as directed by A/E. The surfaces of timber shuttering that would come in contact with concrete shall be thoroughly cleaned and well wetted and coated with soap solution, raw linseed oil, or form oil of approved manufacture, or any other approved material such as polythene sheets, to prevent adhesive of concrete to form work. A/E shall inspect and accept the form work as to its strength, alignment and general fitness before placing any concrete in the forms. But such inspection shall not relieve the contractor of his responsibility for safety of man, machinery, materials and for results obtained. Suitable camber shall be provided in horizontal members of structures especially in long members to counteract the effects of deflection. The camber for beams and slabs shall be 4 mm per meter i.e. 1 in 250 and for cantilevers, at free end shall be 1/50th of the projected length or as directed by A/E. In case of beams and shear walls, the shuttering shall be tied with nut bolts system @ 750 mm centre to centre vertically and horizontally unless instructed by A/E. 4. Off-form finish: The concrete shall be an off form finish, which means that the formwork itself shall be of a good finish to achieve the off form concrete surface smooth and even, free from all board marks, projections, pits and honey combing etc and all arises shall be square, straight and true. The contractor shall especially see that the finished exposed surface be smooth and even so that no rendering or plastering is required. 5. Sundries: Formwork shall be provided to the top surface of the concrete where the slope of the nature of the work requires it. Provision shall be made for forming holes and chases for services and for building in pipes, conduits and other fixings, as shown on the drawings. The material and position of any ties passing through the concrete shall be to the approval of A/E. Except where corrosion of a metal tie is unimportant it shall be possible to remove a tie so that no part of it remaining embedded in the concrete shall be nearer to the finished surface of the concrete than the specified thickness of cover to the reinforcement. Any holes left after the removal of ties shall be filled with concrete or mortar of approved composition.

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6. Removal of Formwork: The formwork shall be removed avoiding shock or vibration that may cause any damage to concrete. In slab and beam construction, sides of beam shall be stripped first; then the under sides of slab and lastly the underside of the beam. The period that shall elapse after the concrete has been laid before undertaking the work of easing and removal of centering and shuttering shall be as given below according to I.S. 456-1978.

Parts of Structure Where ordinary Portland cement is used forms may be removed after expiry of the following periods:

1. Walls, columns and vertical faces of all structural members

24 to 48 hours as may be decided by A/E.

2. Removal of props under slab 21 days

3. Removal of props under beams and arches

28 days

In case of cantilever slabs and beams, the centering shall remain till structures for bearing down have been erected and have sufficient strength. Measurement: Measurement for payment shall be done of the area on which centering shuttering has been carried out. Rate shall include centering and shuttering including propping, strutting etc. and removal of forms, including applying form oil to shuttering. The rate also includes removal of the form as per the specified time. Nothing extra shall be paid for any kind of curved surfaces, small offsets, decorative designs etc. unless otherwise specified. All these decorative designs and offsets shall be measured accordingly as mentioned earlier and no special provision shall be applied to these measurements. The contractor needs to produce off form finish concrete as much as possible. Nothing extra shall be provided to the contractor for this account.

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PRECAST / PRESTRESSED CONCRETE:

This item relates to the any pre-cast concrete works such as window sill, lintel, etc. as directed. The pre-cast concrete shall be of rich cement concrete of grade not less than M 20 at a ratio of 1:1.5:3 (1 cement: 1.5 sand: hard graded stone aggregate 10 mm and down gauge) unless otherwise specified by A/E. The block and slab shall be smoothly finished and conform to the drawings. The base for the fabrication shall be plain, clean and levelled. The formwork shall be marine ply of exact size in line and level. Prior to pouring concrete, the contractor shall inform for checking and verification of the formwork and reinforcement. Reinforcement shall be confirming to the specified specification. The mixing and placing of concrete shall be as specified in the concrete work. Curing shall be done by covering with wet burlap/gunny bags for 14 days. Pre-cast slabs, panels or units shall be disturbed only after the curing process is completed. Care shall be taken in handling pre-cast units, as any damaged pieces shall be rejected and re-cast at the contractor’s expense. Permanent placement shall be in rich cement mortar (1:3) bedding. The work shall include all the reinforcement, formwork, finishing with neat cement punning and placing concrete in position. Slabs damaged prior to or during installation shall be rejected and not included in the finished project. All the edges shall be true in line and with any slope uniform to the top surface as shown in drawings. The joint between pre-cast members shall be filled with an epoxy sealant of approved quality. Measurement: It shall be measured in running meter or square meter as specified and the rate shall include all material, labour, formwork, reinforcement and necessary finishing. The rate shall also include the cost for transportation and fixing and fitting in position.

CAST IN SITU R.C.C. COPING:

This item relates to the casting of reinforced concrete coping on top of the parapet wall as per drawings and instruction of A/E. The casting of the concrete shall be similar to that of the normal concreting works, unless otherwise specified by A/E. The block and slab shall be smoothly finished and conform to the drawings. Prior to concreting, the contractor shall inform for checking and verification of the formwork and reinforcement. Reinforcement shall be confirming to the specified

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specification. The mixing and placing of concrete shall be as specified in the concrete work. Curing shall be done by covering with wet burlap/gunny bags for 14 days. The contractor shall maintain a proper water bead, as per drawings and instruction, at the time of casting of coping sections. As soon as the concreting is completed to the specified level and line, the contractor need to mobilize a skilled labour for the application of neat cement punning when the concrete is still green. The neat cement punning shall be in ratio of 1 cement: 1 sand, unless otherwise specified and need to be completed prior to the hardening of the concrete. A groove needs to be cut at certain length, i.e. 600 mm unless otherwise mentioned, to minimize the crack. The work shall include all the reinforcement, formwork, finishing with neat cement punning and placing concrete in position. Measurement: It shall be measured in running meter or square meter as specified and the rate shall include all material, labour, formwork, reinforcement, maintaining water bead and necessary finishing. The rate shall also include the cost for transportation and fixing and fitting in position.

BRICK MASONRY WORKS:

The contractor shall provide for all labour, materials, operations, equipments and incidentals necessary and required for the completion of all brickwork called for in the drawings and documents. 1. Materials: Bricks shall be first class of standard specification, regular in shape and size with sharp edges and corners. They shall emit a clear ringing sound on being stuck. They shall be of uniform deep red or copper colour, free from cracks, chips, efflorescence, flaws and lumps of any kind. Dry bricks shall not absorb more than 20% of their weight when immersed in water for 24 hours. Brick shall have an average compressive strength of not less than 100 kg per sq.cm. And not more than 125 kg per sq.cm. For other material such as cement, sand, water etc, they need to meet the standard material specification or as per relevant standards. 2. Machine Made Bricks: Machine made brick shall be defined as "Chinese Brick" with perfect shape and size. Other general standard shall be similar expect for the fact that the

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machine made brick shall be of more perfection, quality and finish. The general methods of construction shall be similar to that of the chimney made bricks. Unless otherwise specifically mentioned as Machine Made Bricks, normal first class bricks shall be used. Areas where there are no plastered, as mentioned in the drawings, Machine made bricks shall be used. If any confusion regarding the type and use of bricks, the contractor need to confirm with A/E. Unless directed by the consultant the brick to be used in this project shall conform to the standards of First class machine made bricks, placed in accordance with the standards and procedures given in the specifications. 3. Mortar: The brickwork shall be done with the specified mortar mixing the ingredients in the specified proportion. Materials of mortar shall be first mixed dry till of uniform colour. Only the quantity of cement mortar which can be used within 30 minutes shall be prepared at a time. Retempering of mortar shall be allowed if necessary, as long as it is with in the time frame stated for usage of mixed materials. The strength of the mortar needs to be test prior to the commencement of the brickwork. The strength of mortar shall be determined prior to commencement of work, but after the strength of the brick has been found, and the ratio of ingredients ascertained. 4. Soaking of Bricks: All bricks shall be thoroughly soaked in water by submerging them in clean water for at least four hours just before use. 5. Laying: The brick laying shall be of English bond unless specially mentioned. A layer of mortar shall be spread on full width over a suitable length of the lower course. Each brick shall be properly bedded with frog upward and set home (in position) by gently tapping with handle of trowel or wooden mallet. Its inside faces shall be buttered with mortar before the next brick is laid and pressed against it. Bricks being placed shall have their ends “buttered” as they are laid, thus ensuring a full and compacted joint in all direction. Half, or cut bricks shall not be used except where necessary to complete the bond. No damage or broken bricks shall be used. Closers in such cases, shall be cut to the required size and used near the ends of the walls. In exposed brickwork, selected bricks of the specified class shall be used for face work. The brickwork shall be true to line, plumb and all vertical joints shall be truly vertical. Vertical joints in alternate courses shall come directly one over the other. Thickness of brick course shall be kept uniform. All connected brickwork shall be carried up simultaneously and no portion of work shall be left more than one meter below the rest of the work. Where this is not possible, the work shall be raked back according to bond (and not toothed) at an angle not steeper than 450. The work done per day should not be more than one meter height. All iron fixtures, pipes, outlets of water, holdfasts of doors and windows, which are required to be built into walls shall be embedded in mortar or cement concrete as specified in their correct position as per direction, as the work proceeds. The last two to three layers of bricks shall not be laid continuously. This shall allow the masonry wall to settle a bit upon its self weight and

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decrease the possibility of developing cracks as the junction of beams, especially where two different types of materials meet. The last two to three layers of bricks shall be laid about 4-5 days after the whole wall have been competed. 6. Joints: Bricks shall be so laid that all joints are full of mortar. The thickness of joints shall not exceed 10 -12 mm. The face of the brickwork shall be cleaned on the same day on which brickwork is laid and all mortar droppings removed promptly. All face joints shall be “struck” at the time of laying (while mortar is still moist and workable). The striking process shall be done with a metal tool of circular configuration, of a diameter not exceeding double the size of the joint. Thus rendering a smooth, even, well consolidated surface, offering protection from moisture migration through the mortar joints. The contractor needs to ensure that the brick pointing works is carried out simultaneously with the brick masonry laying works. It needs to well ensure that the pointing mortar is well sticked with the mortar used for the laying of the brick masonry works. The pointing works need to ensure that each and every joint in-between the bricks are well covered and intact connected. 7. Brick Coping: The top course of all plinth, parapet, steps and top wall below R.C.C. shall be laid with bricks on edges unless specified otherwise. 8. Curing: Brickwork shall be protected from rain by suitable covering when the mortar is green. Masonry work in cement mortar shall be kept constantly moist on all faces for a minimum period of seven days. Brickwork carried out during day shall be suitably marked indicating the date on which the work is done so as to keep a watch on the curing period. The Brick Industry Association – technical notes for brick construction state that the proper method of curing brick walls is to “fog” spray them [3] times a day for [3]days. It also states that all cleaning of masonry surfaces should be done prior to start of the curing process as the process also hardens the undesirable materials on the surface. 9. Scaffolding: For all exposed brickwork, double scaffolding having two sets of vertical supports shall be provided. The supports shall be sound and strong, tied together with horizontal pieces over which scaffolding planks shall be fixed. For all other brickwork in buildings, single scaffolding shall be permitted. In such cases, the inner end of the horizontal scaffolding pole shall rest in a hole provided only in the header course for the purpose. Only one header for each pole shall be left out. Such holes for scaffolding shall however, are not allowed in pillars or columns. The holes left in masonry works for scaffolding purposes shall be filled and made good before plastering.

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10. Reinforcement: All 115 mm thick brickwork shall be reinforced with 1 number 7 diameter mm torkari bar or equivalent reinforcement at every six course. All 230 mm or thicker brickwork shall be reinforced with 2 numbers 7 mm diameter rebars and 7 mm diameter links at 200 mm centre to centre at every sixth course. The thickness of the mortar need to be maintained throughout the wall by the contractor though the reinforcement is laid. The reinforcement laid need to be interconnected with the structural elements, i.e. columns in this case. The columns shall be drilled upto the depth of at least 50 mm at every point where there shall be reinforcement bars from the walls. The horizontal re-bars from the walls shall be encased within the depth and shall be covered with specified mortar. Due to the importance of uniformity in mortar joints the contractor will be allowed to “notch” the horizontal surface of the brick to house the reinforcement. This notch size shall not exceed the diameter of the reinforcement embedded in it plus 10%. 11. Openings: Openings in brickwork for air conditioning ducts, exhaust fans, grilles, pipes etc shall be provided at the time of laying brickwork without any extra cost. After installation of piping, conduits, grilles etc. all openings left around pipes, conduits, grilles etc shall be checked and caulked with cement mortar to render the whole work vermin proof and tidily finished. The rates quoted are deemed to be inclusive of closing such pre determined openings including erection and dismantling of scaffolding if required, the placing of inserts, collars, grilles etc. to be paid separately under respective item. 12. Architectural Exposed (fairfaced) Brickwork: Where exposed brickwork is specified, the usual specifications for "Brickwork" as mention shall be applicable, but in addition specially selected bricks shall be used for facing, ensuring regular and clean faces of uniform colour. No bricks which are broken, chipped, wrinkled or which have irregular edges or corners shall be used. Depending on the quality of bricks and if instructed, the exposed face of every brick shall be rubbed before laying. A wooden fillet 10 mm thick and 10 mm wide shall be placed at the edge of joints to ensure that a uniform gap is maintained between bricks throughout. The surface shall be rubbed down with brushes thoroughly. All joints shall be even and true to a straight line. Double scaffolding shall be used in exposed brickwork. The surface shall be rubbed down with jute brushes if necessary and thoroughly washed. No mortar shall be allowed to stick to the surface, which shall be left clean to the satisfaction with horizontal and vertical joints even and true. Any scratches on the fair faced side shall not be accepted. All exposed brick shall have joints stuck in a concave manner and all joints shall be completely full and the mortar shall have been “pressed” to complete a dense, well compacted joint, thus giving a tight moisture resistant exposed face.

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Measurement: 230 mm or thicker brickwork shall be measured in cubic meter of the actual work done whereas 115 mm thick brickwork shall be measured in square meter of the actual work done. Deduction for doors, windows and other openings including lintels shall be made to arrive at the quantity of work. Nothing extra shall be paid for forming such openings. However, no deduction shall be made for areas less than 0.1 square metre overall, bearing of lintels, beams, girders and holdfast blocks but nothing extra like formwork, shall be paid for embedding these. Similarly, no deduction shall be made for chimney flue left in the walls, but nothing extra shall be allowed for rendering for flue openings as specified. Unless otherwise specified nothing extra shall be admissible for cutting shapes other than straight or any cutting necessary for shaping the walls to the structural design. Rate shall be inclusive of all necessary scaffolding, watering, cutting, and anchoring of bricks, curing, materials and labour. In case of arches and any other decorative brickwork, nothing extra shall be paid unless otherwise specified. For the arches, extra items like formworks shall be paid as per application during construction. For the special account fair-faced brickwork, different rate shall be allocated in the bill of quantities. Other general payment shall be similar to that of the chimney made brickwork. If machine made bricks is also mentioned, the rate shall vary to that of the local bricks whereas other modes of payment shall be similar.

COMPOSITE CONCRETE PANEL BOARDS:

The system consists of either single layer and / or double layer of square / tapered edge composite concrete panels board that is screw fixed to lightweight, cold rolled metal sections. The partitions are extremely versatile and can achieve the levels of fire resistance, sound insulation, impact resistance and stability required in all normal types of buildings. The composite concrete panel boards shall be of minimum 12 mm thick and shall in accordance with the specification in the British Standard 476-Part 5: 1979. The contractor needs to provide the test results in performance to the sample as designated. The board shall be non-asbestos fibre-cement flat sheet composing of Portland cement, cellulose fibre and refined sand. With the special manufacturing process, the board need to acquire the strength, durability as well as dimensional stability. The size of the composite concrete panel shall be in accordance to the site and the contractor need to work out minimum joints as far as possible. It is highly recommended that the contractor shall work for the maximum size so that fewer joints are there to be treated on. The framing detail includes 72-79 mm width metal stud partition which includes one layer of composite concrete panel, one on each side. The composite concrete panel shall be fixed on the steel / G.I. frame with at least 0.55 mm thickness. The boards must be supported at

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the edged at intermediate position with centres not exceeding 400 mm centre to centre at the vertical position distance. Likewise, the spacing of the framing shall be not exceeding 1200 mm centre to centre at the horizontal position distance. To be more specific, it is most important that the metal framing for the Horizontal shall be of minimum 20 gauges and the metal framing for the Vertical shall be of minimum 18 gauges. The concrete panel shall be fixed with drywall screws at 300 mm c/c or as per requirement. This is fixed to either side of studs. Care should be taken that the joints should be staggered to avoid leakage. The fasteners used shall be self embedding or self-drilling head screws equivalent to USG screws. The size and length of the screw will be according to thickness of the board and the gauge of framing. Since fibre-cement board is subjected to slightly dimensional changes, butt joint can be used. For better protection, either flexible acrylic or polyurethane based sealant shall be used to seal the gap of 3-5 mm. A special condition applies where the doors and windows need to be fixed within the gypsum partitions. The metal studs needs to fix to edge of the points which shall be supported by wooden section, an additional sal wood framing. The frame of the doors / windows shall be screwed to these sections for support. Furthermore, the contractor needs to work out the position of hanging the picture frame, when finished, after discussion with the team. Once the position is finalized, an extra metal stud need to be fixed such that it acts as a proper stiffener once the picture is hung after completion. The contractor needs to work the electrical works as well as sanitary work simultaneously so that no chipping is allowed. The conduits of the electrical lines /sanitary lines need to be installed while building the partition walls itself. After completion of the walls, only a core cutting shall be allowed for the final installation of light / sanitary fixtures, wherever deemed necessary. If the contractor fails to perform this activity, the contractor needs to start from the beginnings. NO chippings and unnecessary cutting is allowed. The composite concrete panel need to be handled carefully to avoid chipping edges or damaging units in anyway. Handing and store practice shall be followed as per manufacturer’s suggestion. Measurements: Measurement shall be done of acceptably completed works on the basis of net finished area in square meter laid in position as shown. The single measurement shall include both layers of composite panel boards. The rate shall include cost of materials and labour including the G.I. channels, screws, fabrication, erection, fasteners, adhesives, joint compounds, reinforcing tapes, etc. all complete. The rate also includes all the sealant works that need to be incorporated between the two joints.

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The contractor needs to work out the details if the composite panel is to be placed as an inner leaf of the cavity wall. All the works shall be worked out as a cavity wall if the composite panel prior to be placed as inner leaf of the cavity wall. Nothing extra shall be paid to the contractor for providing extra support for doors/ window openings, glass wool, or screwing of plywood etc mention in the above literature.

STONE DUST PACKING:

Prior to the stone dust packing works, the site need to be properly cleared off any kind of debris and freed off from organic and inorganic materials. The site needs to be well levelled and properly cleaned. Stone dust earth packing is generally used as a base surface for different kinds of concrete structure. For the stone dust packing, crushed aggregate of sieve size 32 mm down shall be mixed with the stone dust. The stone dust and aggregate shall be dry mixed in the mixer machine in the specified proportion. The contractor is not allowed to pack the stone dust aggregate more than 100 mm thick at one time. Once the site is properly cleaned and levelled, the stone dust aggregate mixture shall be laid, not more that 100 mm thick. Then the packing shall be compacted using at least 2 tonne rolling compactor. Using sprinkles of water the contractor need to make sure that proper consolidation is achieved. The contractor need to make sure that the stone dust aggregate is properly compacted, not less than 100% of the proctor density to the original soil. Once the layer of 100 mm is properly compacted and verified, the contractor shall move ahead for the next layer of stone dust compaction following the similar procedure until the final depth is reached. In areas such as drop slab created for the toilets, the contractor need to compact the area with the minimum use of water as much a possible. In these areas the contractor need to properly rammed the packing area to provide the required compaction. Corners, edges need to be given special care while compacting. The contractor shall test the compacted earth if desired by the A/E or the client. Measurement: The measurement shall be taken for the consolidated thickness of earth/sand and paid in cubic meter or square meter as indicated in the Bill of Quantities, after filling to the

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required level. No extra shall be paid for transportation, delivery, filling etc in case filling of borrowed earth. Unless the depth of the stone dust packing is mentioned, the measurement shall be in cubic meter. If the depth is specifically mentioned and in general conditions, the depth of stone duct packing is less than or equal to 100 mm thick, the measurement shall be done of the total square meter covered while laying.

WATER PROOFING WORKS:

All waterproofing work shall be carried out by the main contractor through a specialized Waterproofing agency as specified in the tender. The work shall be carried out strictly in accordance with the instructions of the manufacturer of the waterproofing materials used in waterproofing treatment and the contractor shall be responsible for the proper production of record of ingredients used and the performance of the waterproofing work done. The entire work shall be covered by a performance guarantee for waterproofing for the period mentioned in the description of item. 1. Preparation of Surfaces: The surface on which the water proofing is to be applied shall be thoroughly cleaned. All the unwanted impurities need to be cleaned as far as applicable prior to the application of the materials. The graded roof surface, concrete fillets, and faces of wall shall be thoroughly cleaned with wire brushed and all scales, mortar dropping etc. removed. Any cracks shall be cut into “V’ section and filled up flush with cement mortar 1:4 or blown up. Cleaning of surface or treating the cracks shall not be paid for separately. If directed in the manufacturers’ specification or product specification, priming coat shall also be applied and this shall also not be paid for separately. 2. Mixing & Application: If the waterproofing compound approved has two elements to be mixed, the contractor shall mix in presence of the site representative as per the instruction of the manufacturers’ specification. Furthermore, all the mixing procedures and application procedures shall be thoroughly applied as per the manufacturers’ specification. Special care need to be done during mixing. Where the treatment consists of two layers, the second layer shall be laid similar to the first with joins in the two layers properly staggered. Measurements: The rate for the waterproofing work to be carried out under the contract shall include all labours, materials, tools, plants, equipments, transport and all the operations required for carrying out and completing the work, whether spelt out in detail or not, but including

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removing all loose materials, loose scales, mortar droppings and oil, grease etc. and removing all debris / rubbish outside the site premises, curing where required. No deduction for opening or for roof lights, chimney stacks etc. shall be made for areas upto 0.4 sq.m. nor anything shall be paid for forming such opening.

ALUMINIUM FRAMES AND SHUTTERS:

Door Shutter: Sliding Door:

1. Fully glazed 2. Partly glazed

Swinging Door: a) Fully glazed b) Partly glazed

Casement Door: a) Fully glazed b) Partly glazed

Window Shutter:

a) Sliding Window b) Casement Window c) Fixed Glass Window d) Fixed Skylight

The aluminium sections used in frames and shutters shall be 16 microns thick and powder coated in approved colour manufactured by INDAL or of equivalent make. All members shall be designed for recessed (slush) glazing without use of applied stops unless otherwise specified. The frame and the rebate shall be a monolithic unit. All members shall be free of stains and any damage. If any damage or defects during delivery or after fitting in position are found, the defects shall be rectified immediately or replaced at the contractor's expense. The contractor shall attach all necessary product and quality specification along with the quotation. All the frames and shutters shall be of the same colour. Exposed fastenings shall not be used except where specifically detailed and /or approved. The contractor shall verify the exact dimension at site before fabrication. In the event of any changes, the contractor shall immediately inform the aluminium contractor (in the event of third party) at the time of masonry works. The contractor needs to produce a set of fabrication drawings regarding all the doors and windows prior to the commencement of work. All the fabrication drawings need to be verified and checked by A/E before starting

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the work. The drawings need to be verified by the contractor himself, if the third party is involved. Any demolition and/or re-masonry work due to lack of co-ordination between the aluminium contractor and the civil contractor shall be responsibility of the main contractor. After fitting and fixing in position, the contractor shall seal the gap around the aluminium frame with the best quality elastomer on foam from both sides for water seal. Such gap between the frames and masonry wall or plaster or concrete shall not exceed 5 mm. The colour of the silicon sealant shall match the frame/shutter colour. All screws and/or riveting shall be of the same colour as the frame/shutter. All the stainless steel elements, if approved, such as hinges, tower bolts, etc shall also match the frame / shutter colour. Before handover all the frames / shutters and glass shall be cleaned; any scratches or stains shall be polished with a rubbing compound of approved brand and quality. In each and every opening, there should be proper provision for the drainage of rain water. This holds true for all the shutters, pivot openings too. The contractor shall submit a list of units with a rate analysis for each item of work (doors and windows) such as fixed glass, openable glass shutter, louver, sliding, swing, mosquito mesh shutter etc. 1. Hardware Fittings: Hinges, handles, knobs, locks, ball catchers, floor springs, bolts, door stoppers, door closers, adjustable shelf fittings and other hardware fittings for doors shall be of the best quality and of the specified make and approved by A/E. For the large doors / external doors, the contractor shall purchase or fabricate SS doors handles that are generally used in the industrial use. The size of the handle shall be minimum 12”outside to outside in length and the design and the make shall be as approved by A/E. No additional cost for the handle shall be borne by the project. The locks and handles shall be of approved quality and type. The contractor shall submit a sample for approval before fitting in position. Hardware shall be of the same brand as used in other applications; therefore coordination of suppliers needs to be considered. 2. Protection of Work: The contractor shall be responsible for the temporary doors and closing in opening necessary for the protection of the work during progress. The contractor shall also provide and maintain any temporary covering required for the protection of finished work that may be damaged during the progress of the work if left unprotected. 3. Glass: The fixed glass shall be approved quality. The thickness shall not be less than 6 mm for the shutters and the fixed portion of glass. The glass shall be fixed in the frame with the best quality of rubber gasket. Any kind of wavy glass will not be accepted by A/E.

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As per design, any horizontal and / or sloped glass shall be of at least 10 mm thick. All the other accessories for the thicker glass shall be in accordance with the normal glass. 4. Double Glazed: All the windows shall be single glazed unless specifically mentioned as double glazed window. Double glazed windows are placed in A/C areas and the areas which are specially designed with sound insulation and other mentioned areas. In the double glazed windows, there shall be double layer of glass panel with vacuum or argon gas sandwiched in between. The thickness of the glass shall be similar to that of the single glazed however; proper caulking must be carried out after the completion of the double glazed windows. The frame used for the windows must be wider so that the thickness of the double glazed fits within itself. All the other accessories need to be worked accordingly with the proper insulation keeping intact the function of the use of this particular material. 5. Weather Tightness: In the clients effort to control future energy costs and usage weather tightness and air infiltration are a concern and shall be addressed. Weather tightness shall be as per the weather conditions prevailing at the site. All doors and windows shall be fabricated as complete air and water tight units; including gaskets for glazing, weather stripping, latches, locks, bolts etc. The doors, windows and other assemblies are to be fabricated and installed with provision for such expansion or contraction which is likely to occur due to temperature changes during all weather changes without causing buckling or distortion of joints. Joints between vertical and horizontal mullions shall be compression joints with a gasket of non-hardening butyl compound. A water stop in accordance with manufacturer's recommendations shall be place between vertical and horizontal members and sealed with liquid butyl compound. Provide for drainage. Set glass both sides, in Neoprene rubber. Seal all joints in Neoprene with liquid butyl compound. All opening sections must be weather stripped with neoprene glazing gaskets or similar approved and polypropylene pile weather stripping around doors to ensure adequate weather proofing. Aluminium glazing beads are to be snap on type without visible fixing and flexible to allow for different thickness of glass. PVC weather stripping shall not be accepted. 6. Laminated Boards: In case of aluminium doors, laminated boards shall be used. The laminated boards shall be 12 mm thick as per IS: 3087 & 12823 Grade I & II. The boards shall be BSL – both sides shall have a hard moisture resistant laminated with approved color. The prelaminated surface shall be resistant to heat, steam and stains. Boards shall have uniform density, high degree of homogeneity, good machinability characteristics and shall be free from defects like waviness, telescopy and air pockets.

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7. Elastomeric Silicone: The contractor needs to use the best brand of elastomeric silicone available in the market. The A/E shall approve the brand and color prior to commencement of usage. 8. Mosquito Screen: The fly mesh, if applicable, shall be stainless steel jali or as approved by A/E. The jali shall be fitted neatly and cleanly in the shutter and shall be tight and plain throughout the shutter. Any damage during fitting or delivery will not be accepted. The contractor shall replace the fly mesh immediately at no additional cost if the fly mesh is found to be damaged after fitting and fixing in position. Measurements: The items covered in this section shall include furnishing of all labour, materials, equipments and appliances for performing all operation in carrying out and in connection with the furnishing, fabricating and fixing of aluminium doors and windows and all related items, such as gaskets for glazing, rollers, latches, fasteners, expansion anchor bolts or plugs and other items supplied and customarily built in and/or installed, in strict accordance with the specification. It shall be measured in square meters of door / window area actually installed in site inclusive of fixed, sliding and openable shutters (glass and fly mesh). The rate shall include all materials, labour, fabrication, delivery and fitting in position with the necessary and approved hardware and accessories etc. all complete ready for operation. The rates shall also include the elastomer on foam seal used for water seal. The contractor needs to make provisions for the SS handle for the external doors, unless otherwise specified. Nothing extra shall be provided for the handles. Hardware shall not be measured separately. Their rate shall be included in the rate for door and window shutters. In case of the horizontal and / or slope glass, the rate shall be inclusive of the thicker glass, i.e. at least 10 mm thick of approved brand.

DOORS AND WINDOWS (WOODEN – FRAMES & SHUTTERS):

Timber for the doors / windows frames shall be well seasoned salwood. The timber shall be of the best quality, well seasoned and free from sap, knots, warps, cracks, and other defects or disease. Well seasoned shall mean a moisture content of not to exceed15%. (for intricate works a moisture content of less than 15% is desirable). All wood-work shall be planned, and neatly and truly finished to the exact dimensions as per previous criteria of uniformity. It shall be sawn in the direction of the grains. Sawing shall be truly straight and square. The scantling shall be planned smooth and accurate to the full dimensions, rebates, roundings and mouldings as shown in the drawing made, before assembling. Patching and

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plugging of any kind shall not be permitted except as provided. All joints shall be neat and strong, truly and accurately fitted, and glued before being fitted together. All timbers to be used in the present contract to be well seasoned salwood seasoned either by seasoning plant or natural seasoning. The quality and seasoning shall be approved by A/E before use in work. If plan seasoned timber is required, the seasoning plant and length of seasoning shall be as approved by A/E. If desired by A/E, the contractor shall test the moisture content and submit values to A/E before use in work. Sections of all timber, to be in contact with masonry/ concrete shall be installed as per the instruction of A/E. Stacking methods for various types of wood section shall be in accordance with I.S. 1141 – 1973. Set units plumb and level, accurately aligned and securely anchored. Allow sufficient lateral and vertical movement of expansion and contraction with deflection or buckling. Before fixing to metal, masonry or concrete, a protective coating of bituminous paint shall be applied. 1. Samples and Shop Drawings: The contractor shall, before proceeding with the work, submit to the consultant, for his approval, complete samples of the various materials including hardware and fastening devices and shop drawings and large-scale details covering all joinery work. Actual sizes required shall be determined by measuring all frames to receive sizes, and adjustment for all tolerances, laps etc. required. 2. Frames (Chaukhats): All wooden door and window frames shall be made from fully seasoned salwood purchased from local commercial forests or from the commercial market. The contractor shall test the wood for its moisture content before delivery at site. All such tests shall be performed in the presence of A/E. The moisture content for the timber proposed for door / window frames shall not be above 15% and for shutters 10 % unless otherwise mentioned. The chaukhats shall be properly framed and joined by mortise and tenon joint with hard wooden pins, and the joints shall be coated with white lead before being fitted together. The chaukhats shall be of section as per drawing. Concealed faces of chaukhats shall be painted with two coats of bitumen emulsion paint and the other faces shall be painted with a prime coat before fixing in position. 3. Joints: These shall be mortise and tenon type, simple neat and strong. Mortise and tenon joints shall fit in fully and accurately without wedging or filling. The joints shall be glued framed, put together and pinned with hardwood not less than 10 mm dia. after frames are put together pressed in position by means of a press.

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4. Shutters or Leaves: The shutters may be panelled, glazed, part panelled and part glazed, battened or louvers as specified. The thickness of shutters shall be 32 mm unless otherwise specified. All stiles, rails, and components used in leaves or shutters shall be uniform in thickness and dimensions with adjoining sides at right angles to each respective side. The styles and rails shall be framed properly and accurately with mortise and tenon joint and fixed with wooden pins. Panels shall be of one piece without any joint and shall be fixed with 12 mm insertions into rails and styles and rails provided with moulding as per the design. 5. Surface Treatment: Wood work shall not be painted, oiled or otherwise treated before it has been approved by A/E. All portions of timber abutting against masonry or concrete or embedded in ground shall be painted with approved wood primer or with boiling coaltar. 6. Gluing of Joints: The contact surface of tenon and mortise joints shall be treated before putting together with bulk type synthetic resin adhesive of a make approved by A/E. 7. Fixing in Position: The frame shall be placed in position truly vertical before the masonry reaches half the highest of the opening with iron clamps or as directed by A/E. In case of door frames without sills, the vertical members shall be embedded in the flooring to a depth of 40 mm or as directed by A/E. The door frames without sills while being placed in position and shall be suitably strutted and wedged in order to prevent warping during construction. The frames shall also be protected from damage, during construction. 8. Holdfasts: These shall be fixed to all door or window frames in numbers as given: at least six numbers for the doors and four numbers for the windows. Holdfasts shall be of mild steel (M.S.) flats 4 mm thick and of size 25 mm x 250 mm (width x length), one end split into two and turned for anchorage into cement concrete (1:2:4) blocks of size 300 mm x 130 mm x 100 mm (length x breadth x height) cast as the masonry works proceed. These shall not be paid separately. This methodology is for masonry and exterior works, interior anchoring of doors and windows shall be as per recognized gypsum industry standards. 9. Fittings / Hardware : Hardware refers to all the components which, though not separately provided in the schedule, forms an integral part of the doors / windows frames and shutters and as such are to be included in their rates, e.g. tower bolts, J-hooks, handles etc. All doors shall be provided with handles on both sides and all windows with handles on the inner side. Necessary hinges, tower bolts, hook bolts, stops for keeping the leaves open, and also wooden blocks to prevent leaves striking the jambs of wall, etc shall be provided. The contractor need to co-ordinate such that all the hardware components shall satisfy the whole project needs. A hardware schedule, attached with B.O.Q. need to be followed.

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Locks for the single leaf doors shall be generally mortise locks with handle, key holes on both sides, of 6 lever "Godrej" or equivalent brand, unless otherwise mentioned. For the double leaf doors, brass aldrops lock of the above mentioned brand or equivalent quality shall be installed. Two numbers of tower bolt at least 200 mm of brass shall be installed for the doors. For the window shutters, two numbers to male leaf, 100 mm at the bottom and 150 mm at the top, shall be installed of brass of approved brand. The handles shall be 150 mm brass on the both sides of each leaf (maximum shall be total four numbers in case of double leaf door) shall be installed. Installation of the hardware shall be as per drawings and the details provided. The fittings may be iron, brass or oxidized as specified of approved quality. Screws shall be of suitable length and correct diameter and shall be fixed with screw driver not by hammering. 10. Painting: The surface of shutters and chaukhats shall be painted with tow coats of approved paint over a coat of priming. Faces of chukhat in contact with masonry wall shall be painted with two or more coats of solignum or other preservative before fixing. A prime coat of painting with primer paint shall be applied on the remaining surfaces before fixing in position. All painting shall be completed before the fixing of hardware, and any surface mounted appendages. One or more coats of touch up paint shall be given for final finishing appearance. 11. Washing and Cleaning: After all glass has been inspected and approved, contractor shall thoroughly wash and clean all glazed surfaces, inside and outside, including all mirrors.

SOLID PANELLED SHUTTERS:

Solid panels or 32 mm thick salwood shall be used as per patterns and sizes shown on the drawings. Mortise and tenon joints between the stiles and the rails shall be to the full width of the members. The tenon shall not be less than 15 mm thickness and shall be glued ("mobicol", "polycol" or other approved brands) into the mortises in addition to being pinned with bamboo dowels of not less than 6 mm diameter. Panel grooves in the stiles shall be 15 mm wide and 15 mm deep. The edges of the panel shall not be chamfered fro facing into the groove but shall be inserted straight after being cut to size and after an application of glue at the edges to ensure a tight fit. Each panel shall be in a single width piece. Joining of pieces to form a panel shall not be allowed. All panels shall receive 1 coat of sealant or primer (in the case of painting, one coat of color) before fabrication of the panels and stiles to aid in the stabilization of door leaves. The use of plywood for shutters shall conform to the following requirements:

1) All plywood used shall be commercial grade waterproof material

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2) Shutters shall have a 6mm lamination on both sides 3) All edges shall be “wrapped” with hardwood, having well matched vertical grain on their faces

For the shutters which are being specified as well compressed teak finish, the laying of the teak need to be pre-fabricated, machine compressed solid core door with teak finish monolithically. The grains of the teak shall be as approved by A/E as far as possible.

OPENABLE GLAZED SHUTTER / FIXED GLAZING / PARTIAL GLAZED SHUTTERS:

Glass shall be of the best quality and free from bubbles, scratches and other imperfections. Thickness of the glass shall be not less than 6 mm, unless specified. The glass shall be either "Aashi" or as approved by A/E. Wavy glass is not acceptable. The glass panes shall be fixed in 15 mm rebate of the wooden frame leaving 1.5 mm clear gap allowed for allowing for expansion. The rabbets shall be painted before the glasses are fixed. Wooden beads shall be of salwood and of finished size 8 mm x 19 mm (depth x width) when not shown in the drawings. Putty shall be of standard quality suitable for glazing works, free of hard lumps and excessive drying and cracking tendencies. Nailing shall not be allowed. Rates for the glazing shall be included in the rates of the shutters of which glazed area forms a part.

FULL / PARTIAL PANEL SHUTTERS:

This shall be mentioned as full or partial panelled door shutters which form the part of the complete door shutters. The portion of the panelled shall be 25 mm thick wooden panels. The panels shall be well encased within the wooden frame and shall be easily adjustable size. The panels shall be of uniform density and free from all defects.

FULL / PARTIAL LOUVRE SHUTTERS:

Louvre shutters shall be full or partial as mentioned in the drawings. The panels of the louver shall be 25 mm thick which shall be free from any kinds of defects. The panels need to have a uniform density throughout the surface. The panels shall always be facing outside. As per requirement the shutter is a full louver, the contractor shall construct the shutter frames uniform to others, with the placement of louvers in place of panels as per drawings and instructions of A/E. Nothing extra shall be paid for this.

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WOODEN JALI SHUTTERS:

The frames of the wooden jali shutters shall be of similar size to the normal wooden frames. In case of the shutters, extra frame for the shutters need to install to hold all the wooden sections to form a single part of the shutter. The wooden sections for the jali shall be of the specified size as mentioned in the drawings.

FLY MESH SHUTTERS (MOSQUITO NET)

Refers to the extra shutters, in all external windows and doors, intended to keep out mosquitoes and other pests when the ordinary shutters has to be kept open for convenience. Fly-mesh shutter shall be stainless steel wire mesh of approved gauge, if applicable. General construction shall be similar to that of window shutters. The wire mesh shall be stretched tight over the shutter frame on the inner face, overlapping the members by not less than 20 mm. The frame shall be constructed as per requirement to adjust the additional shutter for the fly-mesh. No additional cost shall be paid to the contractor unless otherwise mentioned, for the addition of the fly mesh especially for all the external openings, (doors and windows). Measurement: The rate shall be for the complete work including hanging and fixing in position. The chaukhats shall be measured in cubic meter under wood work for the finished works, and the length of tenons, horns, etc. shall be added to sight lengths. The measurement of shutters shall be taken in square meter for the finished work in closed portion; overlaps of two shutters shall not be measured. The painting shall be measured separately under a separate item. The cost of fittings may be excluded if specified, and the fitting supplied by the department or owner, but the fixing of the fittings and hanging in position shall be included in the rate. Actual size shall be measured in size for the payment. No additional cost shall be provided to the contractor for the fly-mesh shutters for all the external doors and windows, unless otherwise mentioned. The sizes of the frame need to be adjust as per requirement to incorporate an additional shutter for the mesh.

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POLYTHENE SHEET (DAMP PROOF MEMBRANE):

The polythene damp proof membrane shall be 500 gauge minimum and of black colour. The thickness shall be uniform throughout the sheet. It shall be laid true to line and level with vertical raise sufficient for wrapping above the wall for superstructure. The sheets shall be fold-lapped with a minimum lap length of 150 mm unless otherwise specified. Any damage on the sheets before or after laying will not be accepted. The contractor shall be fully responsible for protecting the sheets against damage until concreting of the floor is completed. Care shall be taken that no punctures are created in the sheeting after laying. Traffic should be avoided over the sheeting once it is laid. Any damaged sheet, when found, shall be removed and replaced with a new sheet with sufficient lapping. Measurement: It shall be measured in square metre of actual covered area. The rate shall be inclusive of materials and labour. No extra shall be paid for lapping and any damage or replacement.

SAND FILLING:

Sand used for filling shall be fine, free from dust, organic and foreign matter and shall be as per the standard specification. Sand shall be spread uniformly to a layer not exceeding 200 mm to the entire filling area. In case of sand filling in plinth, the sand shall then be thoroughly saturated in water. Ramming shall be started by a numbers of rammers in a row for the space between the two plinth walls. The spacing between two rammers shall be 1.5 m and simultaneously ramming by all rammers in the row shall be done up to the end of other side of the area. Successive course of ramming by all rammers shall be done in a transverse direction to the first course of ramming. After thorough consolidation of first layer the second layer of sand to a thickness not exceeding 200 mm shall be spread uniformly over the first consolidated layer. The second layer of sand shall be thoroughly saturated with water as in of first layer and the process of ramming shall be continued. Before ramming the final layer the entire filled up area shall be flooded with water and the same process of ramming shall be continued till no further settlement can be appreciated. At the edges or corners where ramming is not feasible, consolidation shall be done with bull ends or crowbars. The finished surface shall be finally levelled longitudinally and transversely to the desired slope and kept open for inspection. In case of sand filling in upper floors, alternative methods for ramming and consolidation shall be applied as per instruction of A/E. Absolute dry sand, with approval from A/E, shall be used.

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Measurement: It shall be measured in cubic meter, unless otherwise specified. The rate shall be inclusive of material, labour, transportation, etc all complete. No extra shall be paid for compaction.

NON-GLAZED FULLY VITRUFIED CERAMIC TILES:

1. Materials: Non-glazed fully vitrified ceramic tiles shall be of approved make and brand. They shall be of specified size, colours and patterns approved by the A/E. All the tiles shall be of uniform size and shape. In case of decorative tiles, the design and shade shall be uniform throughout the floor. The edges shall be truly in line and level. All the joints in the corner shall be mattress joint unless otherwise specified. Make: Geocera, Cotto or equivalent. Prior to installing any tile, the Contractor shall inspect the surface and conditions in areas to receive tile work and shall notify A/E of any defects or conditions that will interfere with or prevent a satisfactory tile installation and shall coordinate with other traders of work. The contractor shall submit detail workshop drawing for decorative tile laying to the A/E. Other standard materials for the mortar such as sand, cement including water shall be as per the standard specification. 2. Preparation of Surface and Application: The surface shall be brushed, cleaned and wetted. Glazed tile shall be soaked, completely immersed in clean water for at least 30 minutes, and drained. Individual tiles that exhibit drying along edges shall be soaked and drained. No free moisture shall be allowed to remain on the backs of tile at the time of laying. Tiles shall be installed by applying a skim coat of a plastic mix of cement mortar (1 cement: 4 sand), maximum 25 mm thick, on the floor and firmly pressing the tile into the floor to true plane and position unless otherwise specified. Joints in the tile work shall be accurately aligned with along both directions. Joints shall be maintained uniformly 1 mm wide or as directed by aligning spacer lugs on tile edges. Tiles shall be laid out in such a way that no tile less than half size occurs. Preliminary alignment of the tiles needs to be approved from A/E before the procurement of work. Where tile must be cut at edges or penetrated the cut edges shall be carefully filed and neatly ground. Tile work shall be planned to keep all adjoining edges in a smooth, flush plane. Chipped, cracked or broken tile shall not be used and all defective work shall be replaced.

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After tiles have set firm, they shall be dampened and the joints shall be grouted with Polymer grout mixed with pigment to match the shade of tile using a nozzle and plunger. During grouting all excess grout shall be cleaned off the tile surface with damp cloth or sponge. All finished tile work shall be adequately protected from damage during the progress of construction till completion and any damage shall be repaired. Grouting of the tiles need to be done when all the sites are clean. Dust should not be flying around when the application of white grouts between the tiles. Upon completion, prior to final inspection and acceptance, the Contractor shall clean all tile work. Acids or agents liable to damage the work shall be avoided. If tile surfaces show scratches, cracks or other imperfections, which cannot be removed by cleaning; the Contractor shall remove the defective material and replace with new material at no additional expense. Measurement: The measurement shall be done in square metres of the work done including the base setting mortar and polymer grout white cement slurry. Rate shall be inclusive of all materials and labour complete.

NON-GLAZED FULLY VITRUFIED CERAMIC TILES SKIRTING:

The materials shall be as specified above. The laying, application and preparation of surface shall also be as per the standard specification. For the skirting, the height shall be as per the drawings unless otherwise specified. The thickness of the skirting and the height shall be consistent throughout the length. The joints need to be treated as specified to match the flooring too. Skirting tiles shall “blend” in the same plane as wall surfaces as much as possible, thus eliminating steps at the top edge. Measurement: The measurement shall be done in running metres of the work done including the setting mortar and ruled pointing. Rate shall be inclusive of all materials and labour complete.

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WASH BASIN COUNTERS:

The wash basin counter shall be constructed of the polished granite of 19 mm thickness & approved colour. No scratch or damage on the granite shall be accepted. The granite shall be laid on cast-insitu . RCC with cement sand mortar (1:4).The granite shall be laid true to line and level. The holes for the basin and pipelines shall be cut neat and clean to the satisfaction A/E. The edges shall be rounded. The border shall be 75 mm–100 mm wide and shall be laid true to line and level. The edges shall be made round unless otherwise specified. After laying and fixing the granite, it shall be grinded and polished. Granite bead shall be laid along the edge as per instruction. The edges shall be moulded as directed. Measurement: It shall be measured in square metres of the plan area. The rate shall be for the materials and labour inclusive of providing, laying, fixing, cutting necessary holes, grinding, providing beads, moulding, polishing all complete as well as constructing required brick masonry wall and RCC slab with nominal reinforcement.

INTERLOCKING CONCRETE TILES:

All the tiles shall be manufactured by a reputed factory or as approved by A/E. The contractor shall provide a sample before the commencement of work. The quality of the material shall be the best of uniform size and shape. The colour and the pattern of the concrete tiles shall be as approved by A/E. Minimum compressive strength of the compressive tile should be minimum M 25 for those areas where the heavy vehicles shall be moving. For the other areas where only human movement are allocated, the minimum compressive strength of the concrete tiles should be minimum M 25 unless otherwise specified. Any damage or corner cut tiles shall not be accepted either before or after laying. The base of the tile shall be true in line and level or sloped as per the requirement to drain the surface water. The surface on which the tile is to be laid needs to be well compacted and consolidated stone dust at a minimum depth of 50 mm. All tiles shall be laid with 3 mm gap at the joints. The joints shall be uniform throughout the pavement. After laying, all the joints shall be filled with stone dust or fine sand. The workmanship shall be to the satisfaction of A/E.

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Measurement: It shall be measured in square meter of the total area done. The rate shall include all the material, transportation to the site and laying, stone dust or sand blending and preparation of base structure, compaction, and labour all complete.

PLASTERING WORKS:

1. Materials: The materials of mortar cement and sand, including water should be of the standard specifications. The materials shall be first dry mixed, by measuring with boxes to have the required proportion (as specified), and then water added slowly and gradually and mixed thoroughly. 2. Preparation of Surface: The joints of the brickwork shall be raked out to a depth of 12 mm (1/2") and the surface of the wall shall be washed and cleaned and kept wet for two days before plastering. The surface of the wall shall be brushed, cleaned, washed, watered and wetted with water before plastering. In case of cement plaster on cement concrete the face shall be lightly roughened, cleaned, washed and wetted. 3. Laying: The thickness of plastering shall be as specified usually 12 mm (1/2"). To ensure uniform thickness of plaster, patches of 15 cm x 15 cm (6") strips 1 m (3') apart of 10 cm (4") wide plaster shall be applied first at about 2 m (6 ft) apart to act as a guide. First mortar shall be dashed and pressed over the surface and then brought to a true smooth and uniform surface by means of float and trowel. Wall plastering shall be started from top and worked down towards floor. Ceiling plastering shall be completed before starting of wall plaster. The plastered surface shall be kept wet for at least 10 days. The surface should be protected from rain, sun, frost etc. All the edges shall be rounded to minimum diameter so that the edges are not damaged during and after construction. The rounding should be least and need to be approved from A/E prior to completion of work. 20 mm (3/4") thick plaster if required, should be applied in two layers, first rough layer of mortar 12 mm (1/2") thick shall be dashed and pressed on the surface and when the rough layer has sufficiently set, not later than 48 hours, another layer 8 mm thick shall be applied and pressed smooth by float and trowel. If specified, the final surface shall be given special finishing textures, as scaped textures, canvas textures, cork-float finish etc. with required tools by engaging an expert worker in the profession. 4. Scaffolding: Double scaffolding having two sets of vertical supports shall be provided. The supports shall be sound and strong, tied together with horizontal pieces over which scaffolding planks shall be fixed.

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5. Chicken Wire Mesh: Galvanized chicken wire mesh (24 gauges, 12 mm size) shall be provided at junctions of brick masonry and concrete members, to be plastered, and other locations as called for, properly stretched and nailed with galvanized nails, and an equal thickness of plaster on both sides of the mesh. Other areas where the chicken wire mesh needs to be fixed shall be those areas wherever plaster of more than 12 mm thickness is to be applied. The width of the mesh shall be as approved by A/E. The chicken wire mesh wherever specified shall be fixed in place before plastering. In some specified areas, where a groove is instructed not to be laid, at the junction of brick masonry and concrete members, the plaster shall be applied only after the laying of the chicken wire mesh. 6. Grooves: All joints between the concrete and brick masonry, besides other locations as called for, shall be expressed by a groove cut in plaster at no extra cost. 7. Bands: Wherever directed, the plaster band shall be provided by way of additional plaster thickness as specified. The surface of the first layer shall be scratched /roughened with wire brush in the portion where additional thickness is to be applied. The surface shall be cured for a minimum of 48 hours. The clean cement slurry shall be applied by brush before applying a second coat of desired finishing such as smooth, sand faced, stucco, pebble dash etc.; the band edges shall be trowel finished and shall be in absolute line, level and plumb. The band edges shall be sharp and shall not be chamfered unless directed. 8. Fibre Reinforcement: Alkali resistance fibre resistance, of the approved brand, shall be applied in the mix as per the manufactures' specification. The fibre shall be used to minimize the crack and shall be mixed to the mortar before adding water. 16. Water Proofing Compound: For those areas, such as shear walls of the water tanks, basements the contractor needs to mix the water proofing compound within the plastering mortar itself for the extra protection. The contractor needs to get approval of the specification and the brand of the water proofing compound likely to be used prior to the application. Once the water proofing compound is approved, the contractor needs to apply the mix, proportion as per the manufacturer's specification. The contractor holds full responsibility for the water proofing concrete compound used in mortar. Measurement: For all the plaster works, measurement shall be made in square meters of the actual area covered. The rate shall be inclusive of labour, materials, scaffolding etc all complete. Nothing extra shall be paid for the addition of groove, alkali fibre resistance etc unless otherwise mentioned. For those areas where high chemical concrete is used, concrete

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panels in toilets in this case, the complete area need to be plastered using a chicken wire mesh. Nothing extra shall be provided for the addition of the chicken wire mesh. In other specific areas where the contractor needs to use waterproofing compound mixed in the mortar itself, it shall be specifically mentioned. 20 mm thick plaster surface shall be applicable only in the external surfaces, such as external façade of ramp, basement shear wall and water tank shear wall. The contractor shall not be paid 20 mm thick plaster due to the reasoning of bad workmanship in laying bricks or due to error in formwork. Plastering behind the tiles, marbles or cladding shall be paid only once. The contractor shall not be paid for extra plastering to hold the tiles if it has already been paid once. For the addition of plaster bands, any single layer of band whose thickness is less than 150 mm shall not be paid in additional. For all the other bands whose thickness is more and posses' double layer shall be additionally paid in running meter similar to the condition applicable with mutual consent of both parties unless otherwise mentioned.

WALL GUARD PUTTY WORKS:

White cement based putty punning (plaster) is generally applied to give smooth and even surface. Projecting burrs of mortar shall first be removed from the substrate. The surface shall be scrubbed clean with wire brushes. In addition, the plastered surface shall be pock marked with pointed tool, at spacing of not more than 40 mm center and the depth of pocks to be maximum of 1.5 mm deep. This is to ensure a proper key. The surface shall be cleaned of oil and grease marks etc. The putty shall be mixed with 30 to 35% clean water slowly to make paste. Mixing should be continued for 10 to 15 minutes until a uniform paste is formed. The mixed paste should be used within 3 hours. It is essential that the wall surface is thoroughly wet before the application. The Putty Plaster shall be applied directly on the wall in suitable size panels and finished to a smooth surface by a putty blade. The first coat should be uniformly applied from bottom to the top of the wall. The plaster shall be applied in such a manner that it fully fills the gaps. After the first coat of putty is dry the surface shall be gently rubbed with a wet sponge or very gently with the putty blade in order to remove loose particles. The surface must be allowed to dry for at least 3 hours and then apply the second coat of putty. Then the surface must be left to dry completely. After the second coat has dried, any irregularities must be removed with a wet sponge or very gently with the putty blade. This surface must be left to dry for at least for 10 to 12 hours. The total thickness of the coats should be limited to maximum 1.5 mm. The finished surface shall be smooth and true to plane, slopes or curves as required.

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Measurements: The measurements for putty shall be taken over the finished works as mentioned in cement plaster works. The rate shall include the cost of all labor and materials involved in all the operations described above.

PAINTING WORKS:

1. Materials: All materials shall be delivered to premises in their original unbroken containers or package and bear the manufacturers name, label and brand. Formula and the mixed proportion need to be provided in writing by the contractor before application. Manufacturers colour charts shall be submitted for colour selection. Colour sample shall be submitted on one 400 mm x 400 mm cement board per sample for each type of paint for approval. 2. Preparation of Surfaces: All oil, grease, dirt, dust, loose mill scale and any other foreign substance shall be removed from the surface to be painted, polished and white washed by the use of solvent and clean wiping materials. In the event the surfaces become otherwise contaminated in interval between cleaning and painting, re-cleaning will be done by the contractor at no additional cost. All surfaces to be painted with approved quality paints shall be free from dust, dirt, fungus, lichen, algae, etc. For the coat of primer and the paint works, the contractor need to make sure that all the temporary features and removable items such as power points, mirror, geysers etc are to be mounted down before the application of the paint or primer. 2. Application: The painting shall be laid on evenly and smoothly by means of crossing and laying-off, the latter in the direction of the grain of wood. The crossing and laying off consists of covering the area with paint, brushing the surface hard for the first time and then brushing alternatively in opposite direction at right angles to the same. Where so stipulated, the painting shall be carried out using spray machines suited for the nature and location of the work to be carried out. The application of paint, especially on the main gates and other external feature shall be applied with spray machines as mentioned. Only skilled and experienced workmen shall be employed for this class of work. The painted surfaces shall present a uniform appearance and semi-glass finish free from streaks, blisters etc.

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3. Preparation of Surfaces: i) Wood: Sand paper to a smooth even surface and then dust off and wipe clean, touch up all knots and pit pockets with shellac on interior wood. After priming coat has been applied thoroughly fill all nail holes, irregularities and cracks. Use plaster wood filler for stained or natural finish and putty, glazier putty or wood for painted work. ii) Plaster Work: Fill all holes, cracks and abrasions with plaster of Paris, properly prepared and applied and smoothed off to match adjoining surfaces. Do not use sand paper on plaster surfaces. Plaster shall be allowed to dry for at least 4 (twelve) weeks before the application of paint. iii) Steel and Iron: All surfaces shall be washed with mineral spirits to remove any dirt or grease before applying paint. Where rust or scale is present, it shall be wire brushed and sand papered clean. All clean surfaces shall be given one coat of approved phosphate before prime coat in accordance with the manufacturer's specifications. Shop coats of paint that have become marred shall be cleaned off, wire brushed, and spot primer place over the affected area. Paint shall be applied in a manner extending full protection to all surfaces, by applying (1) coat of primer to all surfaces in an even and complete coverage, after primer coat has dried (3 or more) successive coats of proper enamel colour shall be applied for a complete weather resistant surface. iv) Galvanized Metal: Galvanized metal, when new, shall be thoroughly cleaned with naphtha and treated with a moderate solution prepared by mixing 38 grams of copper acetate in a litre of soft water of 39 gm of copper nitrate and 13 gm ammonium chloride in a litre of soft water, prepared in a wooden container and applied with a brush. Allow to dry thoroughly and brush off before applying paint, as per the instruction for steel and iron application. 4. Protect and Clean: At all times, the general and liberal use of drop cloths shall be a primary requirements for protection purposes. Place drop cloths to adequately protect all finished work. Remove and replace all items of finish hardware, device plates, accessories, lighting fixtures or other removable items. In no case shall any finish hardware or other specified items already fitted into place be painted, unless otherwise specified. Contractor shall protect not only his work at all times, but shall also protect adjacent work and materials by suitable covering during the progress of his work. Upon completion of his work, he shall remove all paint and varnish spots from floors, glass and other surfaces. Any defaced surfaces shall be cleaned and the original finish restored. He shall remove from the premises all rubbish and accumulated material and shall leave the work in clean, orderly and acceptable conditions. The finish should be as per satisfaction of A/E. The area needs to be well protected until the building is completely taken over. If the A/E is not satisfied with the finished area and

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not satisfied with the cleanliness of the completed area, the contractor shall add additional coats of paint to give a clean uniformly shaded surface, even though the contractor has completed laying the required coats, without any additional costs. 5. Measurement: All the measurement shall be made in square meters of the actual work done. The rate shall be for one or more coats of primer and two of more coats of the paint and shall be inclusive of all labour, materials, scaffoldings etc complete. Measurement shall be done in square meters and shall be as follows:

Description of Work How Measured Multiplying Factor

a. Frame Measured Flat 1 ½ for each side

b. Flush door Measured Flat 1 for each side

c. Fully glazed or wire Measured Flat ½ for each side

d. Part panelled or part glazed or gauged

Measured Flat 1 for each side

e. Fully ventilated of louvered Measured Flat 1 ½ for each side

f. Trellis of Jaffri Measured Flat overall (no deduction for open space)

1 for painting all over

g. Railing with guard bars, balusters, grating

Measured Flat overall 1 for painting all over

h. Gates, open palisade, fencing including standards braces, rails stays

The height shall be taken from the lower end of the palisade up to the top of standards if they are higher

1 for painting all over

7. Scaffolding: Only double scaffolding having two sets of vertical supports shall be

provided for all painting works. The supports shall be tied together with horizontal pieces over which the scaffolding planks shall be fixed. All the vertical and horizontal members of the scaffolding shall be placed sufficiently away from the surfaces to be painted to ensure proper and uninterrupted application.

BITUMEN PAINT:

The contractor needs to provide the brand and specification of the local available bitumen paint prior to the application in site. Before painting, the surface shall be free of dust and loose particles. It should be thoroughly abraded by a wire brush and loose particles should be removed. Application of the bitumen paint shall be as per the manufacturer's specification.

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ACRYLIC EMULSION:

Acrylic emulsion paint of required colour and approved brand and manufacturer shall be used. All surfaces shall be neatly and smoothly sand papered and cleaned before application. Pigmented priming coat (emulsion thinned with water), followed by three or more finishing coats of acrylic emulsion paint shall be applied to obtain a uniform and even final shade. Paste filler shall be applied and sanded after every coat except in the final finishing coat. Sample of workmanship shall be approved by the client prior to the start of work. Brands: Asian Paints, Berger or equivalent

EXTERIOR ELASTOMERIC COATING:

1. Material: Exterior elastomeric coating shall be as approved by A/E. Before application of the elastomeric coating, its shade shall be approved by the A/E. The primer shall be cement primer of the same manufacture or as specified. 2. Preparation of Surface: Before painting, the surface shall be free of dust and loose particles. It should be thoroughly abraded by a wire brush and loose particles should be removed. The surface should be free of any oil or grease. 3. Application: A coat of white cement primer shall be applied on the prepared surface. After the primer coat has dried, the first coat of elastomeric coating shall be applied and dried for a minimum of 4 hours. Second coat shall be applied after the first coat has dried. The contents of the drum should be thoroughly stirred to disperse settled matter before applying the coating. Care should be taken not to store the drums under direct sunlight. Special care needs to be taken during application of such areas as corners, door jambs, edges, frame lining etc. to insure proper coverage of the paint. No patch works shall be accepted on these areas and need to be continued simultaneously to minimize such unsatisfactory works.

ENAMEL PAINT:

Enamel paint of required colour and approved brand and manufacturer shall be used. All surfaces shall be planed and sand papered before application. Knotting and stopping, as required, shall be attended. Brands: Asian Paints, Berger or equivalent

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Wood or Plastered surfaces: One coat of pigmented priming coat shall be applied on the prepared surface followed by one undercoat and two more finishing coats of enamel paint. Paste filler shall be applied and sanded after every coat except in the final finishing coat. Non – Galvanized Steel Surfaces: After phosphating the prepared surface, a coat of zinc chromate oxide primer shall be applied, followed by three or more coats of synthetic enamel paint. Paste filler shall be applied and sanded after every coat except in the final finishing coat. Galvanized Steel Surfaces: A priming coat of galvanized metal primer shall be applied on the prepared surface after washing with galvanized metal cleaner, followed by three or more coats of synthetic enamel paint. Paste filler shall be applied and sanded after every coat except in the final finishing coat. In the case of welded joints filling of gaps or holes will not be permitted, these areas shall be rewelded and ground to a smooth totally metal surface before applying primer and paint.

VARNISHING:

Knots, holes, cracks etc. shall be filled and covered with putty made of whiting and linseed oil. The wood work shall be rubbed down with sand paper sufficiently smooth to remove any grain marks and it shall be cleaned before-hand. Two coats of boiled linseed oil or two thin coats of glue as specified shall be applied and each such coat shall be allowed to dry and be rubbed down smooth with a fine sand paper. The varnish shall be applied with brushes, using strong, firm strokes, of brushes and spread evenly. The brushes shall be of good quality and perfectly cleaned. In no case sand papers shall be rubbed across the grain, which may cause the finest marks on the finished surface. Specified quality of varnish shall be laid on the prepared surface in thin coats. For new wood works a second coat shall be applied after the first coat of varnish has thoroughly been dried up. Varnishing shall be done during dry weather and should not be allowed to be undertaken in rainy or extremely humid days.

CHAPRA POLISH:

Before application of Chapra Polish, the timber surface shall be thoroughly sand papered to obtain smooth surfaces and all the dust are removed from the surfaces. A coat of primer of chalk power mixed with resign is applied and sand papered to fill in the voids and joints. The Chapra polish is prepared from the Chapra mixed with spirit. The Chapra must completely dissolve in the spirit. Over the primed surfaces, two layers of resin is applied by the smooth cotton cloths and allowed to dry.

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NEAT CEMENT PUNNING SKIRTING:

The neat cement punning skirting shall be about 3 mm thick, 150 mm high in cement mortar of ratio (1 cement: 3 sand) or (1 cement: 2 sand) or unless otherwise specified. Rounding of edges and corners shall be as shown in the drawings. The lines of the skirting shall be true in line and level and the thickness shall be uniform throughout the length. All the angles on the turning such as at the door openings shall be a true 90 degrees. Measurements: The work shall be measured in running meters. The rate shall include all the material and labour. Nothing addition shall be provided to the contractor to rectify the line and level of the plaster line in order to make the skirting in true line.

CEMENT PUNNING ON TOP OF SCREED / PLASTER:

The screed shall be placed similar to that of the placement of the concrete and similarly the plasterwork shall be carried out as per the specifications. The materials such as cement, sand and water shall be as per the standard specifications. The surface shall be roughen and thoroughly wet the surface of bed concrete or R.C. slab before laying the Under-layer screed. Provide necessary shuttering/form work for laying in correct size flooring bays. Fix any dividing strips in the cement sand mortar (1 cement: 4 sand) to pattern as per drawings. Cement slurry shall be brushed into the prepared surface of the slab before laying the topping. The top surfaces shall be finished smooth so that when a straight edge is placed on the finished surface, no light passes between the straight edge and the surface and the surface does not feel abrasive to touch. All finished surfaces to be checked and approved by the A/E to ensure correct markings of bays as detailed. The floor surface shall be cured for 7 days. Curing shall commence after 24 hours of laying. The floor shall not be tamped after laying. The thickness shall be maintained as indicated on drawings. Measurements: The cement punning floor on top of the screed shall be measured in square meters of the total area covered. The rate shall include all the required materials, labour, installation etc all complete as per the drawings and specifications.

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GYPSUM BOARD SUSPENDED FALSE CEILING:

This includes providing and fixing G.I. perimeter channels of size 0.55 mm thick having one flange of 20 mm and another flange of 30 mm and a web of 27 mm along with perimeter of ceiling. It is screws fixed to the walls / concrete elements / partitions with the help of nylon sleeves and screws at 610 mm centres. Then G.I. intermediate channels of size 45 mm (0.9 mm thick with two flanges of 15 mm each) are suspended from the soffits at 1220 mm centre with ceiling angle of width 25 x 10 x 0.55 mm thick. This is then fixed to the soffits with G.I. cleat and steel expansion fasteners. Ceiling section of 0.55 mm thickness having knurled wedge of 51.5 mm and two flanges of 26 mm each with lips of 10.5 mm are then be fixed to the intermediate channel with the help of connecting clips and in a direction perpendicular to the intermediate channel at 457 mm centres. 9.5 / 12.5 mm tapered edged gypboard (confirming to IS: 2095 – 1996 : Part 1) is then screw fixed to the ceiling section with 25 mm dry wall screws at 230 mm centres. Screw fixing is done mechanically either with a screw driver or a drilling machine with suitable attachment. Finally the boards are to be joined and finished so as to have a flush look, which includes filling and finishing the tapered and square edges of the boards with jointing compound, joint paper tape and two coats of drywall tap coat suitable for Gypboard (as per recommended practices of BPB India Gypsum). Alternatively, all square and tapered edge joints are to be filled with Universal Board finish plaster and joint paper tape embedded to complete the first application. Finally, 2 mm thick Board finished plaster is applied on the entire surface of Gypboard to achieve smooth and seamless finish. The plaster application shall be carried out with BPB T&T, as per the recommendation specification of BPB India Gypsum. The contractor shall seek approval of Gypsum materials with detail specification prior to delivery at site. Special care needs to be taken at the joints of the gypsum boards. The two joints need to be a perfect flush finish, for this, it shall be appropriate to connect the two tapering edges only, not square edge and tapering edge. Besides that proper taping needs to be done for the flush finish connection of the wall, soffits of concrete etc with the gypsum board. The finish needs to be in a perfectly true line and level, and well supported so that no sagging is noticed. Once the surface has been rendered to an acceptable state; then a finish of paint in the approved colour shall be applied, giving a uniform texture and colour to the entire surface under the instruction of the A/E. The contractor needs to manage a space within the false ceiling, an accessible area for any other maintenance purpose. The area shall be of the specified size in specified position. These accessible areas need to be properly framed matching to others and shall look clean and flush in their finish.

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Proper protection of the work needs to be done by the contractor, until the total handover of the project. If any piece is damaged, the contractor needs to refurnish without any additional cost and need to match with the existing one. The term damage also refers to the gypsum board getting dirty during an additional work such as electrical fitting, glass wool installation etc. If the false ceiling is dirty in any of such condition, the contractor need to either rectify or change the board to match the others. The civil contractor need to co-ordinate with electrical contractor for the installation of light fixtures and adding extra supports etc. Measurement: Measurement of acceptably completed works of finished false ceiling will be made on the basis of net finished area in square meter laid in position as shown. The rate shall include cost of materials and labour including the G.I. channels, screws, fabrication, erection, etc. all complete. The rate also includes all the painting work required for the complete finish work. Nothing extra shall be paid to the contractor for providing extra support for hanging light fixtures, accessible areas etc.

TUBULAR STEEL WORK IN ROOF TRUSSES / PURLINS / RAMPS / STAIRS:

1. Materials: Steel tubes used in the truss / ramps shall be hot finished tubes, Channels, Angles conforming to IS 1161-1968 and IS 806-1968. 2. Fabrication: The fabrication of trusses / ramps using steel tubes shall conform to IS 800 and welding shall conform to IS 820 and IS 816-1956. The component parts built up C-Channels, I-Beams, rafters, struts, ties, purlins etc of the structure shall be assembled in such a manner that they are neither twisted nor damaged. The members of the truss shall be welded and assembled according to the drawing. All materials shall be straightened before assembly, if necessary, unless required to be of a curvilinear form and shall be free from twist. Cutting and welding at joints, junctions and corners shall be done to suit requirements. Fabrication joints shall not have gaps exceeding 10mm before welding; at no time will putties or fillers be used to seal holes or gaps in welded areas. 3. Laying: The contractor is required to produce fabrication drawings before fabrication work commences. These drawings need to be verified by A/E, for the proper installation of the truss. The contractor shall temporarily install the trusses, purlins, I-sections, Channels etc on the ground for the proper verification before installation in the project 4. Welding: The elements of the trusses need to be properly welded on the ground before installing them in their final position. All joints shall be tack welded and dimensions and alignment checked prior to full welding. All welds shall conform to IS codes and shall be of an acceptable workmanship.

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5. Bolting: Washers shall be specially shaped where necessary, or other means used, to give the nuts and the heads of bolts a satisfactory bearing. In all cases where the full bearing area of the bolt shall not be within the thickness of the parts bolted together washers of appropriate thickness shall be provided to allow the nut to be completely tightened. Edges should be dressed to a neat and workman like finish free from distortion where parts are to be in contact metal-to metal. No dissimilar metals that will encourage electro-chemical corrosion shall be used. For hooking the truss, base plates need to be installed in the concrete at the time of casting the concrete. The base plates need to be properly anchored with the J-hooks or U-hooks unless otherwise specified. During the casting of the concrete, it needs to be made sure that the lathes of the screws are not damaged. During the casting procedure all threaded protrusions shall have a protective covering to eliminate thread damage and fouling of the threads with concrete. Please note that the contractor needs to install expansion bolts wherever necessary, i.e. all the metal sections need to be fixed to the structural elements with the help of the expansion bolt. Hilty expansion bolts are preferred and the length of the bolts shall be minimum of 10 mm dia. and 300 mm length. 6. Flattened Ends: In tubular construction, the ends of tubes may be flattened or otherwise formed to provide for welded, riveted or bolted connections provided that the methods adopted for such flattening do not injure the material. The change of section shall be gradual. Fabricated sample shall be approved by the A/E prior to fabrication for the work. Hammering of ends to alter their configuration is “not” an acceptable method of changing the section. Hydraulic or mechanical pressure applied in a steady manner thus not altering the molecular structure of the tubing shall be the acceptable practice. 7. Sealing of Tubes: Where the end of a tube is not automatically sealed by virtue of its connection by welding to another member, the end shall be properly and completely sealed. Before sealing, the inside of the tube should be dry and free from loose scale. 8. Painting: All tubes shall be painted with two coats of red oxide paint at the workshop before delivery at site. The truss complete in all respects shall be erected at site and fixed in position true to shape and plane. Sample of the workmanship shall be approved prior to work. After erection, re-cleaning and painting with two or more coats of red oxide paint may be required and shall be done at no extra charge by the contractor. A total and complete seal of the metal shall be maintained, to have the work accepted. Measurement: The measurement shall be done in the weight of the work done in kg. The rate shall include the cost of all the tubes, base plates, J-hooks or U-hooks, bolts, welding, completely erected in position including labour. The rate also includes the cost for required number of coats

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over anticorrosive paint of approved quality and brand. The metal sections shall be fixed to the structural elements with the help of expansion bolts only. Nothing extra shall be provided for the expansion bolts. Nothing extra shall be paid to the contractor for the purling support and the base plaster. The metal C-Channels, I-beams, truss, rafters, purlins are also included within the particular rate and nothing extra shall be provided to the contractor.

PVC RAIN WATER DOWN PIPE:

The rain water down pipe of specified diameter shall be of PVC pipe of approved quality and diameter as per the For Construction drawings. A PVC sleeve shall be fixed in each drain hole from the roof terrace. The sleeve will connect to the downpipe through a PVC elbow. Fixing of the down pipes to the walls shall be with galvanized steel top hat brackets not exceeding 1500mm spacing. Measurements: The measurement shall be done in running meters of the actual finished work. Nothing extra shall be paid for gasket, overlaps or wastage. The rate shall be for all materials and labour including all necessary brackets, and support works all complete.

WATER REPELENT PAINT:

1. Material: The water repellent paint for the fairfaced brickworks shall be applied on as stated in the manufacturer’s specification. The water repellent paint shall be solvent based and needs to be get approved by A/E prior to the installation in site. The mixing ratio shall be as per the manufacturer specification or as directed by the consultant. All the mixing shall be done only in presence of A/E. The contractor shall submit the entire detail manufacturer’s specification with warranty catalogue for approval before starting the work. It needs to make sure that enough material is in store before the application procedure starts. The contractor needs to provide, book or store enough materials for the entire project. The contractor is liable to apply the same product throughout the project and not allowed to change from the approved brand. 2. Preparation of Surface: The contractor needs to apply the water paint on the complete finish surface of the brick masonry works. Prior to the application of the water repellent works, the contractor need to verify all the pointing works on the bricks, complete finishing as mentioned in the manufacturer's specification. The application surface needs to be

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properly cleaned of any kind of dirt, surface irregularities or other materials. The contractor needs to verify the completion of the preparation of surface before application. 3. Application: The application procedure shall be by applying spray, brush or as per the manufacturer's specification. The contractor needs to apply properly to ensure the proper application. Application shall conform to the manufacturer's rates, methods and required workmanship at all times, any deviation from manufacturers requirements shall result in rejection of the work. 4. Scaffolding: Double scaffolding having two sets of vertical supports shall be provided. The supports shall be sound and strong, tied together with horizontal pieces over which scaffolding planks shall be fixed in a neat and orderly fashion. Scaffolding planks shall be fully supported at both ends, all laps shall occur at a support. This should be in each location notation is given to scaffolding, it is a safety issue Measurement: It shall be measured in square metre including all necessary preparation, application etc. materials, labour and scaffolding. Nothing extra shall be paid to the contractor if the compound need to be reapplied due to improper application, protection etc.

METAL GRATING:

The structural steel shall be as per the standard specification or shall confirm to I.S. 226-1969. General fabrication, erection shall comply with the standard specification of metal work. The M.S. grating shall be as specified and conforming to the drawings unless otherwise specified. Welding of all metal fabrications shall be smooth and durable and free from cracks and all other details. All welding shall be well ground. Painting shall conform to all standards and practices declared in the painting section of specifications The contractor needs to make sure that all the metal grating is in same line and level during the installation. The end product of the metal grating needs to be flush and level. The metal surface need to be well painted to two or more coats of enamel paint over one coat of metal primer. Measurements: The measurement shall be done in running metres of the actual finished work unless otherwise specified. Nothing extra shall be paid for wastage. The rate shall be for all materials and labour including screws, timber strips, welding, painting to the final coat, etc.

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TECHNICAL SPECIFICATIONS FOR

WATER SUPPLY AND SANITARY WORKS

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GENERAL:

1 Scope: This scope of work shall cover materials and workmanship required for installation of water, supply, sanitary and drainage system. Work under this section shall consist of furnishing all labour materials necessary and required to completely install all sanitary fixtures, chromium plated fittings and accessories required by the drawings and specified hereinafter or given in the schedule of quantities. Without restricting to the generality of the foregoing the sanitary fixtures shall include all sanitary fixtures, CP fittings and accessories, etc, necessary and required for the buildings. Whether specifically mentioned or not, all fixtures and appliances shall be provided with all fixing devices, nuts, bolts, screws, hangers as required. All exposed pipes within toilets and near fixtures shall be chromium plated unless otherwise specified. All hot water pipes shall be lagged & properly insulated from the hot water storage tanks to the hot water taps & outlets. Work for the water supply consists of furnishing all labour, materials, equipment and appliances necessary and required to completely install the water supply system as required by the drawings, specified hereinafter and given in the schedule of quantities. Without restricting to the generality of the foregoing, the water supply system shall include the following:

a) Connecting the mains supply to the designed tanks as per the drawings. b) Control valve, masonry chambers and other appurtenances. c) Connections to all plumbing fixtures, pantries and overhead tanks. d) Excavation and refilling of pipe trenches.

e) Pipe protection and painting. Drainage lines shall be laid to the required gradients and profiles as directed by the Consultant. All drainage connections work shall confirm to the local municipal bye-laws. All slopes and run off shall confirm to the best standard of the IS Hydraulic engineering practices. The minimum bed slope for drainage works should be 1.5% unless otherwise directed by the consultant. The Contractor shall obtain necessary approval and permission for the drainage system from the municipal or any other competent authority as shall be required by local ordinances. Location of all manholes, catch basins, etc, shall be confirmed by the Consultant before the actual execution of the work at site. All works shall be executed as directed by the Consultant and subject to the final approval of the Consultant.

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Work under this section shall consist of furnishing all labour, materials, equipment and appliances necessary as required to completely install the drainage system as required by the drawings and specified hereinafter or given in the Bill of Quantities. Without restricting to the generality of the foregoing, the drainage system shall include: Sewer lines including excavations, pipe lines, manholes, drop connections, underground storm water drains, including pipes, manholes, catch basins, open drains and culverts. 2 Standards:

a) In case where the specification given is found to be inadequate, latest IS or NS specification shall hold good. Whether reference has been made to IS or NS the same shall refer to the latest specification mentioned in the section. If type is not specified elsewhere the type of material and fixture shall be as directed by consultant. If any ambiguity or missed items the same shall be decided by the client in consultation with the consultancy.

b) All materials shall be best of their kind and shall confirmed to the latest IS or NS standards.

c) All samples shall be approved by consultant regarding its quality as specified, prior to the procurement by the contractor. Each sample shall be accompanied by the manufacturer’s specification, brochures, test certificates and guarantee statements for approval.

d) All sets of specimen sample of approved materials shall be kept at Site Office by the contractor.

e) The workmanship shall be the best of its kind and shall conform to the specification of IS or NS standard in every respect or latest trade practice. All defective or unsuitable materials and/or workmanship shall be removed immediately from the site and shall be substituted with proper materials and/or workmanship by the contractor in his own cost. 3 General : Sanitary fixtures shall be of the best quality approved by the Consultant. Wherever particular makes are mentioned, the choice of selection shall remain with the Consultant. The water supply and sanitary works are to be laid to alignments and grades shown on the drawings but subject to such modifications shall be as instructed by the consultant from time to time to meet the requirements of the work. All water supply and sanitary pipes, fittings, fixtures and appurtenances which are to be embedded into concrete, masonry, earth or any construction works shall be embedding only after approval of consultant. All fixtures and fittings shall be provided with all such accessories as are required to complete the item in working condition whether specifically mentioned in the schedule of quantities, specifications or drawings or not.

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All fixtures and accessories shall be fixed in accordance with a set pattern matching the tiles or interior finish as per Consultant's/interior designer's requirements. Wherever necessary, the fittings shall be centered to dimensions and pattern desired. Fixing screws shall be half round head chromium plated brass screws with CP washers wherever required as per directions of Consultant. All fittings and fixtures shall be fixed in a neat workmanlike manner true to level at heights shown on drawings and in accordance with the manufacturer's recommendations. Care shall be taken to fix all inlet and outlet pipes at correct positions. Faulty locations shall be made good and any damage to the finished floor. All CI brackets, fittings clamps and shall be painted with one coat of approved primer and 2 coats of Black Japan paint. All painting works shall be carried out to full satisfaction of the consultant. If directed, additional coats of paints shall be applied to get uniform and matching finish without any extra cost. In case of non-availability of specified sized fixtures in specified units the nearest size in FPS or Metric units shall be provided with prior approval of the consultant for which neither extra will be paid nor shall any rebate be recovered. Wherever the word ‘approved’ is used it shall mean approved by the consultant. Prior to casting any RCC structure the contractor shall put necessary sleeves through beam, slab and other structure to make easy water, waste and soil lines passing through the particular structure. At the proper elevations to give the desired slopes needed to meet the recognized standards for drainage. Pipes and fittings shall be fixed truly vertical, horizontal or in slopes as required in a neat workman like manner. Short or long bends shall be used on all main pipe lines as far as possible. Use of elbows shall be restricted for short connections. As far as possible all bends shall be formed by means of hydraulic pipe bending machine for pipes up to 65mm dia. Pipes shall be fixed in a manner as to provide easy accessibility for repair and maintenance and shall not cause obstruction in shafts, passages, etc. Pipes shall be securely leveled to the required slopes & fixed to walls and ceilings by suitable clamps at intervals specified. Valves and other appurtenances shall be located to provide easy accessibility for operation, maintenance and repairs. The rates quoted shall be for complete items as fixed in position and cover all costs of materials, labour, tools, equipments, supervision, cutting of holes, chases etc., excavation and satisfactory backfill in any type of soil, and also for providing fixing arrangements such as clamps, brackets, blocks etc. The rate shall also include restoration to original condition. All debris from demolishing shall be removed without any extra charge. Work shall be planned in such a manner that demolition and chipping are held to the very minimum. This form of installation shall not be recognized as the “norm” and if the

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consultant determines that excessive retro-fitting is being done he may instruct the contractor to remove sections and accomplish the work and replace the removed work at his (contractor’s) expense. 4 Materials: Unless specifically mentioned otherwise, all the applicable codes and the standards shall be as the standard published by the Bureau of Indian Standard (IS) or Nepal Bureau of Standard (NS) and its subsequent revision in respect of design workmanship, quality and properties of materials and method of testing. Some of these available standards are listed below:

I.S: 778-1984 Specification for gunmetal gate, check valves

I.S: 1172-1971 Basic requirements of water supply, drainage and sanitation

I.S: 1239-1982 Specification for M.S. or G.I. pipes

I.S: 2065-1983 Code of practice of water supply in buildings

I.S: 4985-1981 Specification for uPVC soil, waste and ventilating pipe and accessories

I.S: 1729-1974 Specification for cast iron manhole covers and frames

I.S: 1742-1983 Code of practice for building drainage

I.S: 2064-1973 Code of practice for selection, installation and maintenance of sanitary appliances

5 Accessories: The Contractor shall install all chromium plated and porcelain accessories as shown on the drawings in compliance to the manufacturer’s specifications directed by the Consultant, and given in the Bill of Quantities. All CP accessories shall be fixed with CP brass half round head screws and cut washer in wall with raw plugs and shall include cutting and making good as directed by the Consultant. Porcelain accessories shall be fixed in walls and set in cement mortar 1:2 (1cement: 2 fine sand) and fixed in relation to the tiling work. CLAMPS GI/UPVC/PPR pipes in shafts and other locations shall be supported by MS clamps of design approved or the standard clamps for the respective pipe as per the manufacturer or as directed by the Consultant. Pipes at ceiling level shall be supported on structural clamps fabricated on MS structural brackets or Full threaded GI rods can be anchored in ceilings for support. Pipes in typical shafts shall be supported on slotted angles/channels as specified elsewhere.

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UNIONS The Contractor shall provide adequate numbers of unions/flanges on all pipes to enable dismantling later. Unions shall be provided near each gunmetal valve, stop cocks or check valves and on straight runs as necessary at appropriate locations and required and/or directed by the Consultant. FLANGES Flanged connections shall also be provided on all equipment connections as necessary and required or as directed by the Consultant. Connections shall be made by the correct number and size of bolts and made with 3mm thick insertion rubber washers. Where hot water or steam connections are made insertion gasket shall be of 1.5mm thick compressed fiber gaskets approved by the Consultant. Bolt hole dia for flange shall conform to match the specification for CI sluice valve to IS 780. TRENCHES All GI/ HDPE/UPVC pipes below ground level shall be laid in trenches shall have a minimum cover of 75 cms. At special locations where the specified depth cannot be achieved, The contractor shall propose his proposals to the consultant for approval prior execution. Excavation for trenches shall be done as specified in subsequent pages of this tender but the width and depth of the trenches shall be as follows:

Dia of pipes Width of trenches Depth of trenches

------------------------------------------------------------------------------------------------------- 15mm to 50mm 30cms 75cms

65mm to 100mm 45cms 100cms Where specified all GI pipes in trenches shall be protected with fine sand 15cms all-round before filling in the trenches. PIPE PROTECTION Where specified in the schedule of quantities all GI pipes in chase or below ground shall be protected against corrosion by applying two coats of bitumen paint, wrapping with polythene tape and finishing with one more coat of bitumen paint. VALVES Valves 65mm dia and below shall be heavy gunmetal full way valves or globe valves conforming to IS 778-1971 class I. Valves shall be tested at the manufacturers with test results and their name stamped on it.

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All valves shall be approved by the Consultant before they are allowed to be used in the works. AIR VALVES Air valves shall be provided in all high points in the system to prevent air locks, as shown on the drawings or directed by the Consultant. Air valves shall be gunmetal or CI of size as specified in the Bill of Quantities. Each air valve shall be provided with an isolation gunmetal full way valve for size 65mm dia and below and CI double flanged valve 80mm dia and above. SCOUR VALVES Scour valves shall be provided at all low points in the system as shown on the drawings or directed by the Consultant. Valves shall be gunmetal full way valves for sizes 65mm dia and below and CI double flanged valves 80mm dia and above. URINAL TRAPS Urinal traps shall be cast iron P & S trap with or without vent and set in cement concrete block without extra charge. FLOOR TRAP INLETS: Floor traps shall be HDPE pre-molded or UPVC Premolded; proprietary fixtures deep seal with an effective seal of 50mm. the trap and waste pipes shall be set in cement concrete blocks firmly supported on the structural floor. The blocks shall be in 1:2:4 mix (1 cement, 2 coarse sand, and 4 stone aggregate 20 mm nominal size) and extended to 40mm below finished floor level. Contractor shall provide all necessary shuttering and centering for the blocks. Size of the block shall be 30 x 30cm of the required depth. Urinal traps shall be HDPE pre-molded or UPVC pre-molded, proprietary trap fixtures with or without vent and set in cement concrete block as directed without extra charge. Bathroom traps and connections shall ensure free and silent flow of discharging water. Where specified contractor shall provide a special type HDPE pre-molded proprietary inlet hopper without or with one, two or three inlet sockets to receive converging waste pipes. Joint between waste and hopper inlet sockets shall be screw fixed using neoprene washers. Hopper shall be connected to a trap with at least a 50mm seal (hopper and traps shall be paid for separately). Floor trap inlets, hoppers and the traps shall be set in cement concrete blocks as directed without extra charge. Floor and urinal traps shall be provided with 100-150mm square or round CP/stainless steel grating, with rim of approved design and

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shape. Minimum thickness shall be 6mm or as specified in the bill of quantities. Kitchen grating shall be 150mm x 25mm thick cast iron grating with 20 x 30 x 5mm angle iron frame as directed by the Engineer. These shall be painted with ant-corrosive paint and enamel painted to an approved color. CP / STAINLESS STEEL GRATINGS Floor and urinal traps shall be provided with 100-150mm square or round CP/Stainless steel grating, with rim of approved design and shape. Minimum thickness shall be 6 mm or as specified in the schedule of quantities. Kitchen grating shall be 150mm x 25mm thick cast iron grating with 20 x 30 x 5mm angle iron frame or as directed by the Consultant. These shall be painted with anti corrosive paint & enamel painted to an approved colour. CLEANOUT PLUGS The contractor shall provide HDPE or UPVC proprietary clean-out plugs as required. Clean-out plugs shall be threaded and provided with keyholes for opening. Clean-out plugs shall be fixed to the pipe with a screw fixed collar internally splayed and fitted with neoprene gaskets. 6 Alignment & Grade: The sewers and storm water lines shall be laid to alignment and gradient shown on the drawings but subject to such modifications as shall be ordered by the Consultant from time to time to meet the requirements of the works. No deviations from the lines, depths of cutting or gradients of sewers shown on the plans and sections shall be permitted except at the express direction in writing of the Consultant. 7 Measurements: Rate for providing and fixing of sanitary fixtures, accessories, urinal partitions shall include all items, and operations stated in the respective specifications and Bill of Quantities, and nothing extra is payable. Rates for all items under specifications par. above shall be inclusive of cutting holes and chases and making good the same, CP screws, nuts, bolts and any fixing arrangement required and recommended by manufacturers, testing and commissioning.

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8 Shop Drawings: The contractor shall submit all shop and setting drawings or diagrams to the consultant within three months after the contract awarded in order to make clear the work intended or to show its relation to adjacent work of other trades. Details on shop drawings submitted for approval shall show clearly the relations of the various structural to sanitary components with detail dimension based upon field measurements and specific information if any. 9 Jointing: The interior of sockets and exterior of spigot shall be thoroughly cleaned and dried. The spigot end shall be inserted into the socket right up to the back of the socket and carefully centered and fixed securely with the screw on seals. All fixings and jointing shall strictly follow the manufacturer’s specification and shall conform to the related ISS. 10 Commissioning and Testing: Before commissioning and testing of fixtures, contractor shall ensure that all soil, waste stack and drainage system are connected to the respective manholes and the outfall sewer. The contractor shall also ensure that the water supply system has been commissioned and tested. Fixtures shall be cleaned and all debris and dirt shall be removed. All stickers, labels etc. shall be removed with hot water. The fixtures shall be observed for any leakage or drip at inlet or outlet connections. The rate of flow of each fixture shall be adjusted by control valves. All defective parts shall be replaced and retested. After the pipe work is completed and the fittings area all installed, it shall be carefully charged with water so that all air is expelled from the system. The entire system shall there be hydraulically tested to a pressure of 0.75 N/mm2 (7.5 Kgf/cm2) or twice the working pressure whichever in greater for a period of at 24 hours after steady state is reached. A test register shall be maintained and all entries shall be signed and dated by contractor(s) and the Consultant. The entire installation shall be inspected visually for leakages and sweating. All defects found shall be rectified by removing and remarking the particular section. Caulking of threads, hammering and welding of leak joints shall not be allowed. On satisfactory testing and commissioning of fixtures, contractor shall clean all fixtures and accessories by a suitable detergent. All PPR, uPVC and HDPC pipe lines shall be tested as described in the respective headings. The contractor shall bear all expenses to all tests of the pipes, fittings and installations. The contractor should provide the required quantity of water and electricity for testing. In addition to the sectional testing carried out during the construction, the contractor shall test the entire installation after connections to the overhead tanks or pumping system or

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the mains. He shall rectify all leakages, and shall replace all defective materials in the system. Any damage done due to carelessness, open or burst pipes or failure of fittings, to the building, furniture and fixtures shall be made good during the defects liability period without any extra cost. After commissioning of the water supply system, the contractor shall test each valve by closing and opening it a number of times to observe if it is working efficiently. Valves which do not effectively operate shall be replaced by new ones at no extra cost and the same shall be tested as above. All lengths of the sewer and drain shall be fully tested for water tightness by means of water pressure maintained for not less than 30 minutes. Testing shall be carried out from manhole to manhole. All pipes shall be subjected to a test pressure of at least, 1.5 metre head of water at the highest point. Pressure shall, however, not exceed 6 meter head at any point. The pipes shall be plugged preferably with standard design plugs with rubber plugs on both ends. The upper end shall, however, be connected to a pipe for filling with water and to achieve the required head. A test register shall be maintained which shall be signed and dated by contractor(s) Engineer-in-charge and the Consultant.

The installation shall be guaranteed against faulty material and workmanship. The defect period shall be for 12 months from the date of project hand-over. During this period, the contractor shall be responsible for any repairs or replacement of any defective part at his own cost. 11 As Built Drawing: The contractor shall submit as built drawings of all water supplies, rain, waste and soil lines and installations based upon actual construction to consultant after completion and before handover of the project at his own cost. 12 Regular Operation and Maintenance Manual: Based upon as build drawing, the contractor shall submit regular operation and maintenance manual of all water supply, rain, waste and soil lines and installations to consultant after completion and before handover of the project at his own cost.

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CHLORINATED POLYVINYL CHLORIDE (CPVC) PIPES AND FITTINGS

Chlorinated Polyvinyl Chloride (CPVC) water supply Pipes should be of standard dimensional ratios SDR 11(class 1) .All CPVC Pipes and Fittings should be made from identical CPVC compounds having the same physical properties. Pipes and fittings should be product of SDR 11 meet the requirement of ASTM D 2846, specific to Copper Tube Size dimension.

Pipe Temperature (0C)

Pressure Rating

(kg/sq cm)

SDR 11 27 27.6

82 6.8

The joints should be dame of Astm F-493 Solvent Cement Application.

Horizontal and vertical pipes should be supported by pipe clamps or by hangers not less than 75 cm and as per requirements.

Threaded CPVC fittings with tapered pipe threads should be used with a suitable thread sealant to ensure leak proof joints.

The diameter and thickness corresponding as tabulated below.

Nominal Size(mm)

OD (mm) Wall thickness (mm)

15 15.9 1.73 20 22.2 2.00 25 28.6 2.60 32 34.9 3.20 40 43.3 3.80 50 54 4.90

The joint of pipes and fitting shall be either threaded joint or solvent cement joint as directed in above codes.

Complete installation of CPVC pipes include supply of pipes and necessary fittings such as Tees, Bends, Reducers, Crosses, Unions, socket, elbow, crossover, transition piece, transition joint, end cap, clamp etc. with both male and female of respective fittings, chasing in wall or floor and repair to original finish, laying and jointing of pipes and fittings and pressure testing.

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All water supply CPVC pipes, fittings and valves shall be tested by hydrostatic pressure of at least 10 kg/cm2. Pressure shall be maintained for a period of at least 24 hours without appreciable drop in the pressure. In addition to the testing carried out during the construction, the Contractor shall test the

entire installation after connections to the plumbing systems. The Contractor shall rectify

all leakage, and shall replace all defective materials in the system.

After commissioning of the water supply system, the contractor shall test each valve by

closing and opening it a number of times to observe if it is working efficiently. The valves,

which do not operate effectively, shall be replaced by new ones at the Contractor’s cost and

tested as above. Upon completion of all the test and necessary replacements, all water

piping shall be disinfected as below:

After thoroughly flushing the system with clean water, the system shall be filled with a measured quantity of sodium hypo chloride solution to the water to give free residual chlorine of 5 mg/1itre. After 1 hour of retention, the system shall be drained, re-flushed and returned to service.

Measurement

Measurement for the Contract Item CPVC pipes will be made per running meter of

complete installation.

GI PIPES:

All pipes inside the building and where specified, outside the building, shall be galvanized steel tubes conforming to IS 1239-1979 of class specified or Nepal Standard NS 199-2046 or the latest revision. When class is not specified they shall be medium class. Fittings shall be malleable iron galvanized fittings of approved make. All fittings shall have manufacturer's trade mark stamped on it. Fittings of GI pipes shall include couplings, bends, tees, nipples, reducers, unions, bushes. Fittings shall be IS 1879 -1987 or equivalent. Pipes and fittings shall be joined with screwed fittings. Care shall be taken to remove burr from the end of the pipe after cutting by a round file. All pipes shall be fixed in accordance with layout and alignment shown on the drawings. Care shall be taken to avoid air pockets. GI pipes inside toilets shall be fixed in wall chases well above the floor. No pipes shall be run inside a sunken floor unless specifically instructed. Pipes shall be run under the ceilings or floors and other areas as shown on drawings. Measurement Measurement for the pipes will be made per running meter of complete installation. Pipes above ground shall be measured per linear meter (to the nearest cm) and shall be inclusive

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of all fittings eg couplings; tees, bends, elbows, unions, and deduction for values shall be made. Rate quoted shall be inclusive of all fittings, excavation, backfilling and disposal of surplus earth, cutting holes and chases and making good and all items mentioned in the specifications and Bill of Quantities.

uPVC PIPES:

Where specified, soil, waste, vent and rain water pipes shall be confirmed to IS 4985: 1981 of 4 kg/cm2 and 6 kg/cm2 as specified in BOQ. uPVC pipe should have length of 3m or 6m with molded. Fittings for uPVC pips shall be of thickness not less than 3.2mm. Pipe color shall be as specified by the consultant. Before use at site, all pipes shall be tested by filling up with water for at least 10 minutes. After filling, pipes shall be struck with a hammer and inspected for blowholes and cracks. All defective pipes shall be rejected and removed form the site. Pipes shall be further tested after installation by filling up the stack with water as per manufacturer’s specification. All opening and connections shall be suitably plugged. Any joint found leaking shall be re-laid and joined. All pipes shall be fixed in gradient towards the outfall drain. Pipes inside toilets shall be concealed or otherwise as per drawings and instruction. uPVC pipe lines through basement ceiling shall be clamped as per drawings and instruction. Complete installation of uPVC pipes include supply of pipes and necessary fittings such as Tees, Bends (with or without door), single and double Y (with or without door), Reducers, Crosses, Couplers, Solvent cement, NC putting, rubber, rings, clip etc. It also includes trench excavation in any type of soil and backfilling with proper compaction, chasing in wall or floor and repair to original finish, laying and jointing and pressure testing. The buried pipe shall be bedded with a soil free from rock or sharp edged objects (preferably sand) with a minimum of 75 mm at all sides. Measurement: Measurement for uPVC Pipes will be made per running meter of complete installation.

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SANITARY FIXTURES AND ACCESSORIES:

Sanitary ware, accessories and chrome plated CP fittings shall be of the best quality, as approved. Wherever particular quality is mentioned, the choice or selection shall remain with the consultant. All fixtures and fittings shall be provided with required accessories. Accessories shall include proper fixing arrangement, brackets, nuts, bolts, screws and required connection pieces. Fixing screws shall be half round head chromium plated brass screws with CP washers where necessary. All fittings and fixtures shall be fixed in a neat workmanship manner to correct level at heights shown on Drawings, Instruction and in accordance with the manufacturer's recommendations. Measurement: Measurement for the sanitary ware will be made per unit set installation.

COMMODE AND WATER CLOSET:

Commode and Water closet shall be of white vitreous or anyother colour as specified with wash down flushing cistern and 100 mm diameter double symphonic close porcelain P or S trap without vent horn. The set shall be conforming to IS 2556. Commode shall be provided with bakelite black heavy solid plastic seat cover and lid. WC shall be flushed by means of matching earthenware, ceramic cistern. The WC shall be fixed in level in a neat workmanlike manner. The WC and trap shall be set in cement concrete 1:2:4 mix (1 cement 2 coarse sand 4 stone aggregate 20mm nominal size). Joints between WC and flush pipe shall be made with a putty of white lead and linseed oil and caulked well or with an approved rubber joint. A proper procedure of water proofing, water sealant shall be applied in order to prevent leakage. Valve shall be of 12.7mm diameter CP brass with inlet connection of required length with union and CP brass cap. Measurement: Measurement for the commode and water closet shall be made per unit set of complete installation. Nothing extra shall be provided for the water proofing sealant, water proofing works that shall be carried out as per the instruction.

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WHITE GLAZED WASH BASIN:

Wall mounded and counter types wash basin shall be of white vitreous of first class quality conforming to IS 2556 and of specified size. Wash basin shall be fitted with the heavy CP bottle trap below. Basins shall be supported on a pair of CI brackets of metal angles and channels cantilevering from wall face. All brackets shall be installed in such a way as to be hidden from view. They shall be provided & fixed in place early so that the built up vanity may be installed in sufficient time to comply with completion dates. Each basin shall be provided with 32mm dia CP waste with overflow, popup waste or rubber plug and chain 32mm dia CP brass bottle trap with CP pipe wall and flange as given in the schedule of quantities. Each basin shall be provided with mixing fitting or pillar tap as specified in the Bill of Quantities and/or as approved by the Consultant. Basins shall be fixed at proper heights as shown on drawings. If heights is not specified, the rim level shall be 70cms or as directed by the Consultant. Measurement: Measurement for the white glazed wash basin shall be made per unit set of complete installation.

SINKS:

Sinks shall be stainless steel as specified in the schedule of quantities. Each sink shall be provided with RS or CI brackets and clips and securely fixed. Counter top sinks shall be fixed with suitable angle iron clips or brackets as recommended by the manufacturer. Each sink shall be provided with 40 mm dia CP waste with chain and plug or PVC waste. Fixing shall be done as directed by the consultant and shall be coordinated with the interior fitout programme. Measurement: Measurement shall be made per unit set of complete installation.

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FLUSH VALVE:

CP flush valve shall be fitted to the urinal. The flush valve shall include 25mm diameter control cock and elbow set complete with adjustable sleeve and wall flange. Measurement: Measurement for the stainless flush valve shall be made per unit set of complete installation.

MIRRORS:

Mirrors shall be of approved quality. All edges shall be rounded off. Mirrors shall be fixed to wall with brass chromium plated screws and washers. The approval shall be taken from the Engineer prior to installation. Mirrors shall be electro-coated copper 5.5mm thick of guaranteed quality of float glass and reputed make. The size shall be as specified in the schedule of quantities & the drawings. The image shall be clear and without waviness at all angles of vision. Mirrors shall be provided with blacking of 12 mm thick marine plywood fixed with CP brass semi-round headed concealed screws and cup washers or CP brass clamps as specified or instructed by the Consultant. Measurement: Measurement for the Mirror shall be made per unit set of complete installation.

TOWEL RAILS AND RINGS:

Towel rails and rings shall be Jaguar quality of heavy duty CP brass with two brackets. The size of the rail shall be as specified. The brackets shall be firmly fastened by means of CP brass screws and nylon grip plugs firmly embedded in the wall. Measurement: Measurement for the Towel Rail shall be made per unit set of complete installation.

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ROBE HOOK, TOILET PAPER HOLDER AND SOAP DISH:

Robe hook, toilet paper holder and soap dish shall be heavy grade Jaguar quality. All fixtures shall be fixed in a neat workmanship manner with CP brass screws, where required. Measurement: Measurement for the robe hook, toilet paper holder and soap dray shall be made per unit set of complete installation.

CP FITTINGS:

All CP fittings sink tap, basin tap, bib cock, surgical valve, scrub/sink spout, basin mixer, shower mixer, shower rose, spray, flush valve, conceal stop valve, push flush cock and spreader etc. shall be Jaguar as specified in BOQ and approved by consultant The fittings shall be installed with necessary accessories at correct levels in a neat workmanship. Measurement: Measurement for each CP fittings shall be made per unit set of complete individual installation.

MULTI FLOOR TRAP AND GRATING:

Multi floor trap shall be made of uPVC Panchkanya or equivalent quality with water seal. The floor trap shall be covered with 3mm thick heavy CP brass grating. The floor finish around the trap shall be carefully executed by skilled workmanship to provide perfect finish with slope. Measurement: Measurement for the multi floor trap and grating shall be made per unit set of complete installation.

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GULLY TRAP:

Gully trap shall be made of uPVC Panchkanya or equivalent quality with water seal. Gully trap shall be installed to waste lines prior to waste manhole. The trap shall be carefully executed by skilled workmanship to provide perfect finish with slope. Measurement: Measurement for the gully trap shall be made per unit set of complete installation.

OVERHEAD WATER TANK:

HDPE over head water tank shall be of Hilltake (heavy duty) or equivalent conforming to NS 353 of specified capacity. It shall be fixed on 300mm height brick masonry bed on the terrace level. The tank shall be fitted with inlet, outlet, overflow, washout and vent pipe as recommended by manufacturers and instruction. Tanks of the size and capacity described in the Bill of Quantities shall be of the best quality available and shall be manufactured by Syntex Plast Containers by the Bharat Vijay Mills Ltd, N Gujarat of their "Syntex" range, Hilltake by Hilltake Pvt. Ltd. Nepal or equivalent. They shall conform to the manufacturer’s specifications to all connections etc, to be made to the tanks. They shall be free of all defects. Measurement: Measurement for the overhead water tank shall be made per unit set of complete installation.

CLAMPS:

Holder bat clamps for supporting of GI, uPVC and other pipes shall be of standard design and fabricated from MS 12mm bolts and nuts. They shall be painted with two coats of black Japan paint before fixing. MS clamps, shall be of standard design and fabricated from MS flat 40 x 3mm thick. Structural clamps shall be fabricated from mild steel structure section e.g. rods, angles, channels, nuts, bolts, welding and painting the clamps with one coat of red oxide. The clamps shall be fixed as per drawing and instruction. Alternative – installation of a galvanized metal channel system with accessories (i.e. Hilti –MN, ML series system with pipe clamps, and hangers. Where MS clamps are to be fixed on RCC column or slotted angles, walls or beam they shall be fixed with 40 x 3mm flat iron `U' type GI clamps with anchor fasteners of approved design or 6 mm nuts and bolts. Structural clamps shall be

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fabricated from MS structural members eg. rods, angles, channels, flats as per detailed drawings or as directed. The Contractor shall provide all nuts, bolts, welding and paint the clamps with one coat of red-oxide. Wooden saddles shall be provided free of cost but structural clamps shall be paid separately by weight. Slotted angle/channel supports on walls shall be provided wherever shown on drawings. Angles/channels shall be of sizes as approved by the Consultant. Angles/channels shall be fixed to brick walls with bolts embedded in cement concrete blocks and to RCC walls with suitable expansion bolts or fasteners using electrical drilling for making holes. The spacing of support bolts horizontally shall not exceed 1m. Wherever MS clamps are required to be anchored directly to brick walls, concrete slabs, beams or columns, nothing extra shall be payable for clamping arrangements for making good with cement concrete 1:2:4 mix as directed by the Consultant. GI and other pipes through ceiling shall be supported by MS bars. Measurement: Measurement for the clamps shall be made per unit set as per total weight of the complete set as specified in BOQ. MS structural supports for storage tanks shall be paid by weight of actual length of member fixed at site multiplied by its theoretical weight given in the manufacturer's catalogue. Rate shall be inclusive of hoisting, cutting, joining and making good the walls and all items described in the Bill of Quantities and specifications.

MANHOLES:

The internal size of manholes shall be of as specified in BOQ and depth depends upon gradient of waste or soil or rain water lines and wall thickness depending upon depth and site conditions. The RCC foundation, benching, wall, finishing, levels of inlet and outlet, cover with frame etc. for manholes shall be constructed as per drawing and instruction. The soil manhole shall not retain any night soil in it. CI manhole covers shall be Swastika or equivalent heavy as per instruction. All manhole cover shall be of double seal and the frame of manhole shall be embedded firmly on RCC coupling. All surfaces of frames and cover shall be painted with coal tar. Manhole frames and covers shall be of clean well defined castings (i.e. key slots and edges shall be smooth and easy to access). Depth of manholes shall dictate size variations as per safety requirements. Manholes shall be integrated with the materials surrounding them in a manner which is astatically pleasing. Drop connections shall be provided between branch sewer and main sewer or in the main sewer itself in steep ground when the difference in invert level of the two exceeds 45 cms of

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the required sizes. Drop connections from gully traps to main sewers in rectangular manholes shall be made inside the manholes and shall have HCI special type door bend on top and heel rest bend at bottom connected by a HCI pipe. This pipe shall be supported by holder bat clamps at 180 cms intervals with at least one clamp for each drop connection. All joints shall be load caulked 25mm deep. Drop connections from branch sewer to main sewer shall be made outside the manhole wall with cast iron LA pipe tee connections, vertical pipe and bend at the bottoms. The top of the tee shall be finished upto the surface level and provided with a CI hinged type frame and cover 30 x 30 cms. The connection shall be embedded in cement concrete 1:2:4 mix 15cms all round the pipe and tee upto the surface chamber of the tee. Drop connection made from vertical stacks directly into man holes shall not be considered as drop connections. They shall be paid for under the relevant soil and waste pipes. Measurement: Manholes shall be measured in numbers. Depths of manhole shall be measured only inner dimension. Manhole with depth greater than 1.5m shall be paid as extra as per civil items.

SEPTIC TANK:

The septic tank shall be constructed of RCC of M20 and similar in design as the water tank, with the addition of (2) baffles to control of effluent. The tank should be water tight without any leakages of the influent. Water leakage tests should be done before commencing the tank to ensure the tank remains leakage free during its life time. The tank shall be covered with RCC slab. Tank shall be provided with inlet chamber, outlet chamber, outlet pipes, drops and fittings, anticorrosive painted CI steps in zigzag manner with all necessary accessories. Septic tank shall be filled with water before put it in operation. A PVC vent pipe of minimum 110 mm diameter is necessary to release the biogas produces within the septic tank. The release of gas should be made in safe height, typically above the roof top. Measurement: Measurement for the septic tank shall be done as per the individual item of the civil works.

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SHOWER SET:

Shower set shall comprise of one or two CP brass stop cocks, concealed as specified in the Bill of Quantities. Each shower set shall be provided with a CP shower rose of approved quality to be approved by the Consultant and arm with wall flange as specified in the Bills of Qunatities and detailed as per the drawings. Concealed stop cocks shall be so fixed to allow for tiled or other finishes as to keep the wall flange clear off the finished wall. Wall flanges embedded in the finishing shall not be accepted. Measurement: Measurement shall be done as per unit of each items placed.

LIST OF APPROVED MAKES OF MATERIALS:

S.No. Description I.S.No. Brand Name

1. Sanitary Ware Hindware, Parry, Cera or Equivalent

2. C.P. Fittings Jaquar, Jal, Ark or Equivalent

3. UPVC Soil & Waste Pipe Apollo, Prince or Equivalent

4. G.I. Pipes / Black Steel Pipes 1239 Tata, Jindal or equivalent

5. Plastic tanks Hillatake, Sintex or Equivalent

6. HDPE Pipes 4934 Prince Pipes, Panchakanya or Equivalent

7. CPVC Pipes Panchakanya, Astral or Equivalent

8. G.I.Fittings 1879 Hulas, Bhagwati, Sun or Equivalent

9. Gunmetal Valves 778 Laxmi, Shakti, Amar or Equivalent

10. C.I. Manholes 1726 Swastik or Equivalent

11. Pan Orissa or Equivalent

12. Towel Bar Rack Hindware, Jaquar or Equivalent

13. Grab Bar

14. Toilet Paper Holder

15. Robe Hook Double

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TECHNICAL SPECIFICATIONS FOR

ELECTRICAL AND ALLIED WORKS

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Brand of Makes/ Manufactures

The following Brands of the Electrical equipments/Accessories/Materials shall be used under this Project, But the Client/ Consultant reserve the rights to approves for all brands with their equivalents (brands/products) as per condition without dominating the intend design concept and calculation. However items which did not specified under this Design Documents should be as per Consultant’s recommendations only.

LED LIGHTINGS PHILIPS/ OSRAM/ WIPRO/ LEGERO

FAN CEILING BAJAJ, CROMPTON, INDOPLUS EXHAUST VENTS

SWITCH/SOCKET/RECEPTACLES

3 pin 13A/3 pin 16 A/Gang Switches SCHNEIDER, LEGRAND RG 6/ RJ 11/RJ 45 outlet SCHNEIDER, LEGRAND Outdoor type weather proof plugs/sockets SCHNEIDER, LEGRAND

PANEL BOARD/ DISTRIBUTION BOARD HIMALAYA ENG, HYONJAN CIRCUIT BREAKERS LEGRAND, SCHNEIDER, ABB

CABLE/WIRE U/A, ARM PIONEER, TRISHAKTI, PRAKASH Wire PIONEER, LITMUS, TRISHAKTI

Telephone /LAN cable NEX1, LEGRAND, PANDUIT T V coaxial cable LG, D-link, CLIPSAL, NEX 1 PVC CONDUIT/ DUCT BOTTOM

PVC Rigid Conduit LIUTONG/ LEGRAND PVC Duct Bottom LEGRAND

FIRE ALARM EQUIPMENTS – HONEYWELL, C-TECH, SYSTEM SENSOR

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ABBREVIATIONS:

A : Ampere Arm : Armored BS : British Standard CFL : Compact Fluorescent Lamp CDF : Communication Distribution Frame COB : Chip on Board Cu : Copper DB : Distribution Board DP : Double Pole (Phase) EW : Emergency Ward FATB : Fire Alarm cable termination block FDB : Floor Distribution Boards FF : First Floor FFL : Finished Floor Level FTL : Fluorescent Tube Light GI : Galvanized Iron HDP : High-Density Polythene HRCA : Hot rolled Cast Alloy Hz : Hertz IEC/IES : International Electro technical Commission/ Standard IS : Indian Standard JB : Junction Box/Board LED : Light Emitting Diode MCB : Miniature Circuit Breaker MCCB : Molded Case Circuit Breaker MDB : Main Distribution Board/Box mm : Millimeter NBC : Nepal National Building Code NEA : Nepal Electricity Authority MDF : Main Distribution frame MPB : Main panel Board NS : Nepal Standard UNDP : United Nations Development Program PB : Panel Board/Box PL : Power Saving Lamp PVC : Poly Vinyl Chloride RCCB : Residual Current circuit breaker SDB : Sub Distribution Board/Box SMD : Surface Mounted Device SP : Single Pole (Phase) Sq. mm : Square Millimeter SWG : Standard Wire Gauge TP : Three Pole/Phase TPN : Three Pole (Phase) with/and Neutral TPNE : Three Pole (Phase) with/and Neutral with/and Earth Un Arm : UN Armored V : Volt W : Watt

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1.0 GENERAL SPECIFICATIONS

SCOPE

The works covered shall include furnishing all labour, materials, equipment and services in connection with the complete work, as indicated.

The Contractor shall consult drawings, bill of quantities, and specifications all together, which gives the total scope of the work.

The contractor shall supply and install all the electrical and allied system works as per BOQ complete with all accessories including materials, fixtures, equipments and appliances etc.

All equipments shall be complete and operative in all respects and shall be left in satisfactory working conditions.

The contractor shall perform the following work in addition to furnish the delivering of the equipment, materials and accessories.

a. Assembling at the site b. Erection and complete Installation c. Testing of all equipments d. Commissioning of the wiring and equipment. e. Trial operation and all necessary adjustments. f. Obtaining Owner’s/Engineer’s approval and written acceptable for satisfactory operation.

ACCESSORIES

Supplementary and complimentary items required in connection with completing a particular item of work are deemed to be accessories and are generally mentioned together with the main items, may be in the bill of quantities, specifications or in the drawings. For example while fixing Luminaries the followings are termed accessories: extension rods, nail grips, screws, connectors, LED bulb, LED tube, reflector/ chain holder, boxes etc. Some accessories may not be found enumerated anywhere in the text. Nevertheless, these missing accessories are deemed inclusive in the quoted rate. The quality and quantity of these Accessories are subject to confirmation of the Designer.

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APPENDIX

Some appendices are inclusive/ exclusive in this package of work. Not withstanding these shall confirm to all the relevant codes of practices, NBC and others.

RATES

i) The rates given in the electrical installation scheme are all inclusive of labour and materials required for breaking brick work, concrete work, and earth work in excavation etc., as and where required for carrying out the implementation of the complete electrical installation scheme.

ii) The rates given in the electrical installation scheme are all inclusive of any labour and materials required for reinstating general civil works with all finishes and trench filling in the exterior inclusive of levelling to approved level and distribution or removal of surplus soil, or according to specifications.

iii) The rates are also inclusive of painting work of all exposed parts of the installation consisting of one or two coats of anti-corrosive paints on any metal part plus 2 or more coats of approved finishing / paint in colours to be instructed by the Consultants.

iv) The rate quoted in the tender shall include all charges for scaffoldings, centring materials, tools and equipment, store sheds (warehouse) for material, transferring all materials from place of availability to the site of work, etc. The tender rates shall also include Contractor's temporary establishment and services s/he may require for the successful completion of the work. The rates shall be inclusive of sales tax, or any other fees or duty levied by any government or public bodies.

ADDITION/ALTERNATON

No addition, temporary or permanent, shall be made to authorized load of the existing situation until it has been definitely ascertained that the current carrying capacity and the condition of the existing accessories e.g. conductors, breakers, switches etc. affected including those of the supplying authorities are adequate for the increase load.

No alternation in the designed are permitted without due permeation of the designer/Electrical engineer in writing.

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QUANTITIES The calculations made by the Bidder should be based upon probable quantities of the several items of work which are furnished for the Bidder’s convenience in schedule of probable quantities, but it must be clearly understood that the schedule of quantities is liable to alteration by omission, deletion or addition at the discretion of the Consultants without vitiating the contract and the contract is not a lump sum contract, and neither the probable any way assure the Bidder or guarantee that the said probable quantities are correct or that the quantity of work would correspond thereto.

DRAWINGS

i) It is the intent of the specifications, along with bill of quantities and accompanying drawings to provide a complete workable facility. The drawings, specifications and bill of quantities are complimentary and what is called for by one shall be as bidding as if called for by all. Items shown on the drawings or bill of quantities are not necessarily included in the specification.

ii) The drawings provided are design drawings and generally are diagrammatic. They do not show offsets, bends, elbows, or junction boxes which may be required for the installation in the space provided. The Contractor shall follow the drawings as closely as is practicable to do so and shall install bends, offsets, junction boxes, pull boxes, etc. where required, by local conditions from measurements taken at the building, subject to approval and without additional cost.

iii) The contract drawings shall serve as working drawings for the general layout of lighting, outlets, cables, and various items of equipment. The Contractor shall prepare and submit for approval detailed shop drawings of all installations not detailed on the drawings provided. Any change or amendment made during installation shall be noted in the working drawing. The preparation and submission of detailed as built in drawings after completion of the works, shall be the responsibility of the Contractor. The submission of the final as built in drawing is obligatory prior to the issuance of the Completion Certificate.

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Shop drawings shall include, but are not limited to:-

- Control system - Conduit layouts with location of junction boxes and number of wires - External and internal cables pipes, anchors, supports, loops, building

entrances - Electrical distribution boards, wire or cable ways, etc., - Lighting fixture catalogue sheets for all fixtures to be installed, with

fixture type indicated for each item.

iv) Submit for approval, manufacturers detailed shop drawings, specifications and data sheets for all equipment.

Equipment Protection

Keep all cables and conduit opening closed by means of plugs or cover to prevent entrance of foreign matters. Protect all cables, conduits, raceways, fixtures, equipment or apparatus. Any such item damaged prior to final acceptance of the work shall be restored to its original condition or replaced at no extra cost to the client.

Inserts and Sleeves

Layout inserts and sleeves necessary to complete the work in advance of pouring of slabs or construction of walls. Cost of cutting or patching made necessary as a result of this operation shall be at no extra cost.

Cleaning

i) All electrical fixtures shall be cleaned of stamping and markings [except those required by codes], iron cuttings and other foreign materials.

ii) Electrical switch boards, receptacles, equipment shall be vacuum cleaned of dust and debris.

iii) Painted surface which have been scratched or marred shall be cleaned of rust or other foreign matters and painted with matching colour of industrial enamel.

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Operation

The Contractor shall instruct thoroughly the UNDP Maintenance staffs in the efficient operation of the entire system.

Guarantee

The Contractor shall make good the following guarantee requirements within one year following date of final acceptance without additional cost to the Owner:-

i) All work and apparatus shall be so built and installed as to deliver its full rated capacity at the efficiency for which it was designed.

ii) All work and apparatus shall be free from defects of material or workmanship. Any defective material due to defective manufacture, or bad workmanship, or wrong installation shall be replaced free of cost during this period.

iii) The entire electrical and mechanical apparatus shall operate at full ratings without objectionable noise or vibration.

WARRANTY

1. Manufacturer Warranty: 1 year from the date of project hand-over for any manufacturing defect.

2. Contractors Warranty: 1 year from the date of installation completed for any installation defect.

Equipment Connections

Provide electrical connections as required to all equipment like light fixtures, fans, outlets etc., include all incidental wiring, materials, devices, and labour necessary for a finished working installation.

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SECTION 001 - ELECTRICAL WORKS - GENERAL

GENERAL

1. This General Technical Specification covers the general technical requirements for the

complete purchase, supply, delivery, before or after delivery testing or on the site testing, storing, fabricating and assembling on the site, installation, after installation testing, commissioning and put in to normal operation of the electrical system for the project including all necessary supplementary or complementary materials, supervision, labor, tools, equipments and accessories, miscellaneous materials, testing and putting in acceptable operation of the electrical system.

2. The electrical system shall be implied as the works related to indoor and outdoor

lighting system, Normal and appliances special power sockets, fans, telephone system, fire alarm system, computer networking system, distribution system, power and control panels etc.

SCOPE

1. The scope of work under this section shall be as mentioned under the section 001 Electrical Works - General paragraph 1 and 2. And as per bellows: 2. Scope of electrical works shall covered by the following unless otherwise mentioned

in the Scope of work or on the Bill of Quantity:

2.1 Section 1 – Internal Electrification

a. Distribution Board as mentioned on the BOQ b. L.T. 400/230 volt cables with termination c. Point wiring of all internal lighting/power; exhaust fan, power outlets etc. as

indicate on the electrical drawing. including supply and fixing and put into operation with all required accessories in all respect as per mentioned quantities

d. Installation of light fixtures, gang switches, outlets etc. e. Supply of telephone wiring with outlets with main cable. f. Supply of fire alarm system wiring with detector/hooter/FATB. 2.2 Section 2 – External Electrification

a. Feeder cables for 400 volt 3 phase, 50 Hz supply as mentioned on the

BOQ/Drawings b. Feeder cables for 230 volt 1 phase, 50 Hz supply as mentioned on the

BOQ/Drawings

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c. Grounding of complete system consist grounding of internal power outlets. d. Grounding of every external live metal part, DB boards, CDFs etc. e. External lighting’s wiring.

SUBMITTALS

Product data with supplementary literature should be submitted to the owner/architect’s engineer and get approval for each type of materials as indicated before placing/ordering for/to the project site.

REGULATION AND STANDARD

The whole electrical system (materials/labor) shall confirm to the Nepal National Building Code NBC 207, 2003 and relative code of practice of IS & BS.

PROTECTION OF WORK

The Contractor shall effectively protect, at his/her own expense, such of his/her work, materials or equipment as is liable to injury during the construction period. All openings to any part of the conduit system, as well as associated fixtures and equipment, both before and after being set in place, must be securely covered or otherwise protected to prevent obstruction of the conduit or injury due to carelessly or maliciously dropped tools or materials, grit, dirt or any foreign matters. The Contractor will be held responsible for all damages so done until his work is fully and finally accepted. Conduit ends shall be covered with capped bushings.

END OF SECTION 001

SECTION 002 - ELECTRICAL MEANS AND METHODS

This Section includes the following:

1. PVC Conduit/ PVC Surface duct bottom. 2. Circuits (Lighting/Power/Outdoor) 3. L.T. Wiring system. 4. Wiring 5. Electrical identification/color coding

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1. PVC CONDUIT/ PVC SURFACE DUCT BOTTOM

A. All the PVC rigid conduits shall be High impact conforming to BS-EN-50086, Crush resistance 120 kgf or equivalent for internal electrical works; the PVC Surface conduits shall confirm to the BS-EN-50086 standard and minimum wall thickness should be 2 mm, single length of the conduit for light circuit should not be more than 10 meters and 15 meters for power circuits respectively. All the PVC conduits shall be single lengths without joint except in the junction or pull box. Fixing of standard bends and elbows shall be allowed as far as practicable and all curves maintained by bending the conduit pipe itself with the long radius which shall permit easy drawing in of conductors. No cable joint shall be allowed in the conduits. The conduit pipe shall be fixed by means of saddles (with nylon and metal grip and steels crew) not more than 600 mm apart or by any other approved means of fixing. Conduit shall be fixed in the wall/ ceiling after slab casting, plastering and shall be finished neatly after erection of conduit.

i) All wiring shall be drawn inside PVC conduits and in recess manner, unless otherwise shown. The diameters of the conduits shown in the drawing are all internal diameters. The smallest size of the conduit used shall be 20 mm dia. and 2 mm thick. The size of the conduit to be used in any section depends upon the number and sizes of the cable to be drawn in that particular section. As a general rule the sum total area of the cables shall not exceed 60 % of the internal sectional area of the conduit.

ii) Where no size is shown for conduit for the conductors indicated, use the minimum code-permitted size. Provide sizes in excess of code requirements where more bends are encountered.

iii) Protect conduits from entry of foreign materials during construction; replace conduits containing any foreign materials that cannot be removed, clean out conduit containing water before conductors pulled in.

i) Conduits shall run in a direct line with long sweep bends or by bending the conduit pipe itself with the long radius. Conduits shall be continuous and secured to boxes with glands termination.

ii) Conduits Crossing Over Expansion Joints: Provide minimum 30 cm length flexible conduit at the point of crossing building expansion joints. Extra conduits and cables shall be provided at the expansion joints for minimum 15 cm deviation.

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iii) Except in specific locations, use standard conduit fittings. Use suitable sized pull boxes, unless otherwise specifically approved for use on conduit fittings [at locations only where a pull box size inhibited by space limitations].

iv) All fastening devices and supports for electrical equipment, fixtures, panels, outlets, conduits and cabinets shall be capable of supporting not less than 4 times the ultimate weight of the object or objects fastened or supported thereby.

v) Provide pull boxes as required to limit the number of bends in any conduit racing to not more than three 90 degrees bends; use 18 gauze galvanised sheet steel boxes of required size with removable covers and install with accessibility to cover up after work is completed.

vi) Conduits in ceiling bottom, in case of false ceiling, shall be fixed in group or individual with galvanised trapeze or cradle or saddle as the case may be and non-ferrous fixing hardware as approved.

B. PVC surface duct bottom should be double Z locking type with cover and white in color. In case of joint for the surface duct shall be used the overlap method of duct shall be used. Fixing of the surface bottom shall be done by minimum 25 mm self threaded steel screws with nylon washer by using the nylon grip on each 750 mm intervals. Surface bottom more than 35 mm shall be fixed with cross zigzag screwed with nylon grip in 500 mm intervals. The entire duct bottom shall be single lengths without joint except in the junction or pull box. Do not bend the duct bottom without putting the pull boxes. No cable joint shall be allowed in the conduits.

2. CIRCUITS (LIGHTING/FAN/POWER)

2.1 LIGHTING

A circuit is intended to feed and control light points viz. LED, FTL, CFL, Fans some 2/3 pin convenient outlet etc. A light circuit shall not exceed > 10 such points or < 1 KW loading whichever is less. During execution, independent and separate light circuits for each group of points shall be made; in all light points earth continuity shall be maintained for fixtures with metal body, inbuilt capacitors, ballasts and luminaries class-1. Phasing may be coupled with the electronic ballast in the case of three phase wiring.

2.2 POWER

A power circuit is intended to feed the convenient outlet sockets with earth continuity (Conductor) such as 3/5/6 pin plugs of different capacities.

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2.2.1 DEDICATED OUTDOOR POWER/LIGHT CIRCUIT

Power circuit feeding usually one convenient outlet (single) is indicated by darkening the convenient outlet in the drawing. Light circuit for outdoor pole lights shall be done as per drawings

2.2.2 GENERAL CIRCUIT

Any circuits not belonging to above mentioned i.e. dedicated power circuit is termed as general circuit and may contain convenient outlets of different types (e.g. 3 pin/5 pin etc.) and numbers depending upon the situation.

2.2.3 LENGTH OF THE CIRCUIT

Circuits may vary from case to case. The length to be considered shall be the distance between the concerned MCB/ cut out usually positioned inside the DB’s and the points via switches and PB s for certain circuit, regardless of its nature (light circuit/power circuit).

3 LOW TENSION WIRING SYSTEM 3.1 LIGHT POINTS

Wiring of final circuits for lights, Power points, fans etc., shall be carried out by distributions and looping system as shown in the drawings. Loop-in-system for light points shall be maintained as per followings:

i) Phase wire must be looped right from the switch bank and in no case

be looped directly from the light point. ii) Neutral may be looped either as the phase wire or also may be looped

directly from the light point as the case may be. iii) No joints throughout the wiring run of the given circuit are allowed.

3.2 POWER POINTS

The wiring system of power points shall be anyone (or all the mixed) of general circuit as mentioned in the item No: 2.2 under Power.

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4. WIRING

4.1 General

Wiring of final circuits for lights, power outlets, fans, call bell etc., shall be carried out by distributions and looping system as shown in the drawings. The size of phase wires shall not be less than 2.5 sq. mm. copper conductor PVC insulated cables drawn in suitable conduit. The number of points controlled per circuit and the number of wires in a conduit shall be as per NBC: 207; 2003.

4.2 Ratings of Outlets

For purpose of determining the size of the sub-mains and controlling switches, the ratings of outlets shall be as follows, unless otherwise specified.

i) Light, fan points and Power sockets 6 amp. : 100 watts

ii) Power outlets 11 amp. : 500 watts

iii) Power outlets 15 / 16 amp. : 2000 watts

4.3 Wiring

The size of the conductors used for phase and neutral wiring shall be as detailed in the drawing and BQ. As a general guide-line the conductor sizes of feeder cables shall be as follows:

i) 5 /6 amp. rating 2.5 sq. mm Cu. PVC cable

ii) 10 amp. rating 2.5 sq. mm Cu. PVC cable

iii) 13/ 15 / 16 amp. rating 4.0 sq. mm Cu. PVC cable

iv) The conductor size of earth wire for main cable shall be not less than 50 % of the respective phase and neutral wires, unless otherwise specified.

5. ELECTRICALL IDENTIFICATION/COLOR CODING

Color codes for visual aids shall be applied in the electrical as listed hereunder: Red, Yellow and Blue : For phases Black : For neutral

Green : Earth/Ground

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White : For the 3rd middle point connection as in the case of 2 way control system.

Off white : Enamel paints for the metallic enclosures of say DB/PB/MPB etc.

Black : Outdoor lighting poles

Along with the wires the elements and other electrical equipments, e.g. bus bar, neutral bar,

Earth stud etc. shall also be suitable color coded. The color of the wire nuts shall match the color of the wires to be jointed together (PVC Tape joints are not allowed). It is to be noted that the color coding required here in shall be the original colors specially that of wire insulation.

Identify the following systems with color-coded, self-adhesive vinyl tape applied in conduits or raceways bends.

Fire Alarm System: Red. Telecommunication System: Green and yellow. Local Area networking system: Blue and yellow. General Light, Power System: Blue

Underground-Line Warning Tape: During backfilling of trenches install continuous underground-line warning tape directly above line at 6 to 8 inches (150 to 200 mm) below finished grade. Use multiple tapes where width of multiple lines installed in a common trench exceeds 16 inches (400 mm) overall.

6. METHODS AND MATERIALS

All works shall be done in a first-class, neat and workmanship manner by mechanics skilled in the trade involved. All details of the installation shall be mechanically and electrically correct.

All materials shall be new, of the best of their several kinds, and without imperfections and blemishes. All material shall be standard products of manufacturer’s latest design. Where two or more units of the same class of equipment are required, these units shall be of same manufacturer.

All conduits and equipment shall be installed in such a manner as to preserve access to any other equipment installed.

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7. CLOSEOUT SUBMITTALS

Electrical Contractor should submit to the consultant/owner as a final project closeout submittal for electrical and ailed works on the following, but not limited to.

A. TESTING

Electrical Contractor should submit to the consultant/owner testing certificate (test result) for the followings, but not limited to, with jointly undersigned by Contractors Project Engineer, Contractor’s Project Electrical Engineer and Owners representatives. All the necessary testing and measuring equipments should be arranged by contractor for testing purpose.

Earthing (Grounding) system as described on the specification section.

Switches and sockets for polarity, switches means.

Load test with lighting and power circuit with/without AC (in case of)

Breakers directories, circuit.

Power cables insulation, physical

Telephone system with/without PBX, each outlet, TDF.

LAN system.

Fire alarm system with detectors, sounder, and Manual Call Point etc.

Indoor and outdoor lighting system with LUX result.

RCCBs that they brake at the supposed earth leakage

B. FINAL (AS BUILT, AS INSTALLED, SHOP) DRAWINGS

Electrical Contractor should submit to the consultant/owner as built, as installed drawings for the followings, but not limited to.

Earthing (Grounding) locations.

Power (main, sub, branch) supply route with length of cable.

Location of distribution boards with Feeder circuits External/internal light wiring details with numbers of wires.

Power wiring details with numbers of wires.

Circuit breakers, table of contents and load balancing.

Telephone system with each outlet wiring details with numbers of wires.

FDB, PBX, TDF location with wiring details and numbers of cables.

LAN system with location, wiring details and numbers of cables.

Fire Alarm system location with detectors, sounder, MCP, FACP, FATB etc.

Distribution boards.

Shop drawings provided by third party installer.

Underground raceways and duct banks.

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C. O&M MANUALS

Electrical Contractor should submit to the consultant/owner O&M manuals for the following, but not limited to.

LAN system.

Fire Alarm system with detectors, sounder, MCP, FACP, FARP etc.

Telephones PBX, TDF system

Other as required by owner.

RCCB, how to maintain them

D. COMMISIONING DOCUMENTS

Electrical Contractor should submit to the consultant/owner separate electrical commissioning documents (finally compiled) with Project close out submittals dually undersigned by all parties, with but not limited to

Warranty and after sales service letter from vendor/manufacturer.

Related literature (Product data sheets, brochure, catalogue etc.).

Testing documents, including RCCB results

Shop, as built, as installed drawings.

O& M manuals.

END OF SECTION 002

SECTION 003 - WIRING DEVICES AND ACCESSORIES

GENERAL

This Specification section included the followings:

1. Normal power outlets, residual current circuit breaker (RCCB), miniature circuit breaker (MCB), molded case circuit breaker (MCCB).

2. Single or two way light switch. 3. Switches/Outlets metal boxes, wall junction boxes. 4. Wires and cables 5. Mounting heights for electrical wiring devices.

SUBMITTALS

Product Data: For each type of product used for project.

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MANUFACTURER

Use only one single manufacturer for all types of wall plates, light switches, power socket outlets.

Recommended manufacturer: Schneider, Legrand or Equivalent

Outlet BOXEs

Outlet boxes shall be of 18 gauze galvanised steel in size as required to accommodate all wires, fittings, and devices. All flush outlet boxes shall be equipped with a grounding screw. All outlets shall be with PVC Glands for Conduits; these shall be as listed herein below for the various outlets.

Wall Boxes

All wall boxes shall be not less than 75 mm square and not less than 50 mm deep. Prior to grouting of the wall boxes the proper size shall be confirmed to receive type and number of light switch / MCB/ outlet.

Junction Boxes

Junction Boxes for branch circuits shall be not less than 100 mm square and not less than 50 mm deep. The junction box shall be suitable to receive 20 mm dia. (Min.) conduit.

Outlet Mounting

Boxes shall be securely fastened in place in wall or ceiling; provide with plaster rings if required.

Wiring Devices

The following list of wiring devices identifies the most common items with the grade of device as required. All lighting switches and power sockets shall be, as far as possible, of same manufacturer and have identical physical appearance.

i) Light switches with ivory finish, shall be of single pole, one way, two way.

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LOCAL WALL SWITCHES

Local wall switches for controlling lighting shall be furnished and installed for each areas, rooms, hallways etc. All switches shall be single pole or 2-way as required.

General indoor areas - Local switches mounted indoors shall be single pole and shall be rated 6 amperes at 230 Volts.

Outdoors and wet locations - Local switches installed in outdoor and wet locations shall be weatherproof switches, single pole or as required rated 10 Amperes at 230 Volts.

RECEPTACLES

The Contractor shall furnish and install all receptacles and specified herein.

The receptacles shall be of 230V, 13/16 Ampere, 3-pole, 3 wire, polarized with third pole grounded.

The receptacles shall be provided on the walls of all the rooms at a spacing of maximum of 4 meter and with minimum of 1 per wall per room.

Finish Plates

Plates shall be plain finish Perspex painting to match the skirting or wall as

directed.

Mounting Heights

Mounting heights of all devices such as switches receptacles, wall bracket lights, etc. shall be approved before embedding of the boxes in the masonry.

In general, mounting heights to bottom of devices shall be as indicated herein below, unless otherwise specified in the drawings:-

i) General receptacles: Centred in skirting mounted horizontally 400 mm from finished floor level [FFL] or as instructed.

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ii) Light switches: 1400 mm from FFL or as instructed.

iii) Wall Light brackets: As instructed or otherwise 2500 mm from FFL.

Miniature Circuit Breaker (MCB)

The MCB shall be equipped with silver layered contacts with adequate arc extinguishing chamber to cater short circuit current up to 10 KA or as specified in the B. Q. The MCB shall be equipped with tamper proof closely calibrated thermal bimetallic strip for overload protection and short circuit magnetic coil with quick tripping mechanism. The MCB must be able to clear the fault within 5 milli seconds. The TP and DP MCBs shall be provided with the mechanical inter-link with the individual poles.

RESIDUAL CURRENT Circuit Breaker (RCCB)

The RCCB should be with short-circuits and ground fault trip facilities. The RCCB shall be equipped with silver layered contacts with adequate arc extinguishing chamber to cater short circuit current up to 10 kA, earth fault current 0.03 A, Overload current as specified for lighting/power circuits with their load respectively or as specified in the B. Q. The RCCB shall be equipped with tamper proof closely calibrated thermal bimetallic strip for overload protection and short circuit magnetic coil with quick tripping mechanism the RCCB shall be with hydraulic –magnetic for over current pickup and electronic for earth-leakage pickup, the RCCB should be with reset to test facilities.

Mains and Sub-mains PVC Insulated Armoured Cables

These shall conform to latest IS/BS specifications and shall be of plain circular/sector shaped stranded only copper conductor with size and colour as mentioned in the Bill of Quantities.

Cable Laying

Laid Underground

Where cables are laid underground they shall be laid in a trench to a depth of 90cm [minimum] in the case of LT power cables and 90 cm (minimum) in the case of HT cable from the ground level. Care shall be taken to avoid interference with underground structures i.e. water pipes, sewerage lines etc. Any telephone

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lines or other cables coming on the way shall be properly shielded as directed by the site engineer. After the excavation of the trench to a specified depth and the width of the trench governed by the no of cables to be buried and the convenience of the digging the cable/cables shall be laid at the bottom of the trench. The bricks on edges shall be laid along the cable on either side. The brick canal so formed shall be filled with chemically inert sand and top of the bricks on edges shall be bridged across by the brick. The completed brick structure shall looks like sand filled inverted brick canal. The road crossing shall be avoided as far as practicable. The cast iron pipe protection for the cable shall replace the brick protection across the road crossing. After cable pulling through the cast iron conduit they shall be plugged on either end.

Cables Run Over Horizontal or Vertical Surface

All the cables run horizontally or vertically should be within factory manufactured cable tray/ladder. Wherever cables are to run along wall surface of either the building or electrical duct or on the ceiling, these shall be fixed with cleats. Cleats shall consist of moulded insulated materials divided in two halves and secured to suitable racks made of angle iron or flat steel of suitable approved section. The securing shall be by means of studs and nuts with locknuts and washers. For PVC armoured cables, aluminium or G.I. claw type clamps may be used. The rates quoted shall include supply and installation of all fixing materials specified above.

In the case of single core power cables three single core cables shall be installed in tri-angular formation to vertical surface of wall or open cable trench or buried under ground, the cables touching each other throughout and the distance between the wall surface and the nearest cable being 25 mm. Alternatively, three single core cables shall be laid in triangular formation and laid on non-metallic floor, the cable touching each other and floor throughout.

Laid in Ready Trench

This will mean laying of cable in ready prepared trenches directly on trench floor, or the racks provided on the wall of the trench depending upon number of cables to be laid.

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Minimum bending radius shall be twelve times the overall cable diameter in case of XLPEISWAS cables and six times for PVC armoured cables if not otherwise recommended by the Consultant.

The lengths of cables given in the schedule of quantities are only approximate. The successful bidder is required to measure out the actual lengths needed before laying. Straight through joints will not generally be permitted.

Jointing

Cable jointing shall be carried out by skilled jointers with expert supervision. The Contractor shall use the best jointing materials and the necessary cable compound and all jointing sweating, basting, wiping and filling in of compound shall be done in an approved manner.

Wiring Cable Run Under Defined Conditions:

Multi-Core Cable

Cables of all types other than single-core cables are installed singly, fixed to the vertical surface of a wall or open cable trench, the distance between the surface of the cable and the wall being 25mm [1 inch] in every distance.

Provision for Maximum Load

All conductors, switches and accessories shall be of such size as to be capable of carrying, without their respective ratings being exceeded, maximum current which will normally flow through them. Provide copper branch circuits and feeder conductors sized at 150% of full load capacity. Use full-sized neutral conductor and a separate ground conductor for each circuit. Circuits and feeders that supply power for electronic equipment may require an oversized neutral to compensate for high harmonic neutral currents

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Selection of Size of Conductor

The sizes of conductors of circuits shall be so selected that the drop in voltage from consumers' terminals in a public supply to any and every point on the installation does not exceed three percent of voltage at the consumer's terminals when the conductors are carrying the maximum current under the normal conditions of service.

If the cable size is increased to avoid voltage drop in the circuit, the rating of the cable shall be the current which the circuit is designed to carry. In each circuit or sub-circuit every cable shall have a current rating not less than that of the current rating of the respective protection gear.

Overload protection shall not exceed 10A for 2.5 mm2 conductors, 20A for 4.0 mm2 conductors or 30A for 6.0 mm2 conductors

Cable Ends

Stranded conductors having a nominal cross-sectional area exceeding 6 sq. mm shall always be provided with cable lugs and crimping method suitably applied.

When a stranded conductor having a nominal cross-sectional area less than 6 sq. mm is not provided with cable socket, all strands at the exposed end of the cable shall be soldered together. No oxide grease shall be provided on the exposed end conductor after soldering.

In any system of wiring, no bare or twist joints shall be made at intermediate points in the through run of cables unless the length of a final sub-circuit, sub-main or main is more than the length of the standard coil as given by the manufacturer of the cable. If any joint shall be made through proper cut-outs or through proper junction boxes they shall be easily accessible for inspection.

All through cable connections shall terminate in junction boxes with inspection capabilities.

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Passing Through Walls and Floors

Where conductors pass through walls, one of the following methods shall be employed. Care shall be taken to see that wire pass freely through protective pipe or box and that wire pass through in a straight line without any twist or cross in wires on either ends of such holes.

a) A metal box extending through the whole thickness of the wall and casings or conductors shall be carried so as to allow 1.3 cm air space on three sides of the casing or conductor.

b) The conductor shall be carried either in a rigid steel conduit conforming to accepted standards or a rigid or semi-rigid non-metallic conduit conforming to accepted standards.

Where conduits pass through walls or floors the standard fire protection method shall be carried by using fire proof sealing materials as per standard.

Feeder Wires and Cables

Standards

All wires and cable for feeder circuits shall be as per latest IS/BS

specifications.

Wire And Cable Protection

Suitably protect wires and cables from weather and damage during storage and handling; item shall be in first class condition when installed.

Wire and Cable Installation

i) Conductors shall be of soft drawn annealed copper with PVC

insulation and outer coverings as required.

ii) Conductors sizes shall be standard metric. Conductors shall be stranded and shall have colour coded phase wires. Neutral used for 230V circuits shall have a distinguished colour tracer. Cables installed in conduits shall be Multistrend, single core un-armoured and colour coded as per IEE wire size, insulation, and manufacturer's name shall be permanently marked on conductor jacket.

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iii) Conductors installed in wiring channels of continuous row fixtures, and raceway between junction box and recessed fixtures shall be asbestos covered and have 90 degrees insulation. No reduction in branch circuit conductor size below the respective circuit protection rating in wiring channels will be allowed.

iv) Circuit conductors shall extend to the outlets shown. Circuiting basically shall be as shown in the drawings provided. An arrow indicating to distribution board is a complete circuit i.e. consisting of - one phase conductor, one neutral conductor and one earthing conductor wires with colour codes, in a suitable conduit and wire sizes of all should be same as per the outlets loading. Request for deviations in methods of circuiting and conduit branch circuit distribution shall be submitted in shop drawings form for approval.

FIELD CONTROL

Perform the following field tests and inspections and prepare test reports:

After installing wiring devices and after electrical circuitry has been energized, test for proper polarity, ground continuity, and compliance with requirements.

Test RCCBELCB operation with fault simulations according to manufacturer's instructions.

Remove malfunctioning units, replace with new units, and retest as specified above.

END OF SECTION 003

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SECTION 004 – EARTHING (GROUNDING) AND BONDING

GENERAL

This Section includes Earthing (grounding) of electrical systems and equipment in general unless otherwise noted by manufacturer for their special equipments.

APPLICATION

The grounded neutral of the secondary distribution system shall be supplemented by an equipment grounding system to safeguard equipment and personnel properly. Equipment grounding system shall be incorporated to all metallic enclosures, cabinets and other conductive items in close proximity with electrical circuits and shall operate continuously at ground potential and shall provide a low impedance path for possible ground fault currents. The system shall comply with IS & BS specifications.

Copper Plate Earthing Set

The Earthing set as per IS & BS should consist of the following or as detailed in the bill of quantities.

a) 1 no. 60 cm x 60 cm x 0.3 cm - copper plate

b) 1 no. 25 mm dia. PVC pipe of appropriate length and accessories for watering as detailed in the BOQ/Drawing.

c) Test links for schedule testing. d) Earthing enhancing chemical compound filling as detailed in BQ.

e) Copper flat strip or bare copper wire of appropriate cross section, as the case may be, as stated in the BOQ/Drawing.

EARTHING (GROUNDING) CONDUCTORS

Insulated conductors: Copper wire or cable insulated for 600 V unless otherwise required by applicable NBC/IS Code.

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EQUIPMENT GROUNDING CONDUCTORS

Install equipment grounding conductors in all feeders and circuits. Each shall be installed such that it is not shared with any other feeder or branch circuit over its entire length from circuit breaker panel board to load.

Install insulated equipment grounding conductor with circuit conductors for the following items

1. Feeders and branch circuits. 2. Receptacle circuits. 3. Armored and metal-clad cable runs.

Earthing (grounding) for outlet Circuits: Install an insulated copper grounding conductor connected to the receptacle grounding terminal.

Metal boxes for light switches, receptacles, pull or junction boxes: Provide insulated ground conductor for each type of metal box.

FIELD REPORT

Perform the following test and inspections and prepare test reports: Test completed grounding system at each location where a maximum ground-resistance level is specified, Make test at ground rods/plates before conductors are connected to the grid bus.

Report measured ground resistances that exceed the following values:

Distribution units or panel boards serving equipment: 3 ohms.

INSTALLATION

Minimum clearance between two earth stations shall be 5 meters and earthing station shall make minimum 1 meter apart from any building structure. Earthing plate (electrode) shall be overlapped by earthed lead (wire, strip) on both sides in full lengths. Loop lead for earth stations shall be minimum half in size of main earth conductor. For copper cladding earth electrodes earth lead shall brazing in full length of rod.

In case of maintenance free grounding station all required enhancing system shall followed as per manufacture’s recommendations.

END OF SECTION 004

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SECTION 005 – DISTRIBUTION BOARDS

GENERAL

This Section includes Load centers, main, sub-mains, section, floors distribution boards (Complete with switchgears metal enclosures) for low voltage (below 1 kV) application.

DEFINITIONS

B. DB: Distribution Boards.

C. RCCB: Residual current circuit breakers.

D. DP/TP: Double Pole (phase)/ Three Pole (Phase).

E. SP/ SPN: Single Pole (Phase)/Single Pole ( Phase) with/and neutral

F. TPN: Three Phase (Pole) with /and neutral.

G. MCB: Miniature Circuit Breakers (Less than 10 kA Ics).

H. MCCB: Molded Case circuit Breakers ( More than 10 kA Ics)

SUBMITTALS

Contractor should submit the owner, for each type of distribution boards, circuit breakers for Overload, Over current and Short Circuit Currents, RCCB, details dimensioned ACAD drawings with internal components arrangements, types for indoor or outdoor application, recessed or surface mounting, overall dimensioned, size and types of Sheet metal, Copper bus bars, hardware, indicating or measuring instrument etc.

MANUFACTURER

Use only one single manufacturer for all types of MCBs, MCCBs, RCCBs.

Recommended manufacturer for MCBs, MCCBs, RCCBs: Legrand, Schneider, ABB

Recommended manufacturer for measuring and indicating accessories: Selec, AE, Koino, Essma

Recommended fabricator for DBs: Himalaya Electrical, Hyonjan Engineering, Corona Engineering

STANDARD

All above mentioned circuit breakers and measuring/indicating accessories should be with NFPA-NEC 70, NBC -2007, 2003 and BS standard.

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FABRICATION

The main switch board shall be in door type, totally enclosed, metal clad front standing and shall be dust and vermin proof. The design shall be fixed on a modular construction, the fused switch/MCCB/MCB feeder units being arranged in multi-tier formation in horizontal/vertical panels, fed from horizontal/vertical bus bars. The ratings of each feeder and their order including other ancillary gears to be equipped with will be as detailed in the bill of quantity.

vii) All cabling and maintenance shall be carried out from front and the unit shall be extensible feeder control units arranged in individual compartments with hinged doors. All feeder control units shall be front operated and shall be interlocked with the hinged door. Adjoining surface of doors and covers shall be gasketed.

viii) Bus bars shall be of high conductivity copper bar of sufficient cross sectional area so that a current density of 2 amp. Per sq. mm is not exceeded at normal current rating and supported on non-hygroscopic insulator. The neutral busbar cross section shall be equal of the phase bus bars and ground busbars cross section shall not less than 50% of the phase bus bars. Electrolyte tinned ‘Cu’ shall be used unless otherwise mentioned.

These bars shall be covered with insulating sheet e.g. busbar sleeve to avoid live contact. They shall be colored coded as phase oriented. Shapes shall be rectangular in size as their capacity rating +20% in excess.

ix) Clamp type terminals for copper cables may be provided for feeders up to 30 amps. For feeder of higher rating suitable cable lugs shall be used.

x) The feeder control units ratings shall be as specified in the drawing or bill of quantity, switches shall be of quick make and break design with double break per pole. Switch contacts shall be silver plated and housed in suitable insulator. The feeder control operating handle shall be mounted on the front cover.

xi) All the bars shall have bushings/supports made of non-inflammable and non- hygroscopic materials such as hylam, permali, Formica, bakelite etc. Suitable insulating phase barriers should be provided to prevent accidental short circuits during operation

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xii) Hinged front cover: Entire front trim hinged to box and with standard door within hinged trim cover with locking arrangements.

xiii) Finish: Powder coated with manufacture’s standard colour.

xiv) Directory card: With transparent protective cover, mounted inside metal frame, inside switchboards door.

xv) Provide 20 percent spare spaces, 10 percent spare circuit breakers, and 20 percent overall spare current carrying capacity for future expansion as described per Bill of Quantity.

xvi) Wiring diagrams: Power, signal, and control wiring

xvii) The construction shall be compartmentalized.

xviii) All distribution boards shall be dead front type. All switches, circuit breakers, etc. shall be operable from the front.

xix) All bolts and nuts exposed to external atmosphere shall be cadmium plated or zinc passivated.

xx) The working height shall be limited to a maximum of 2,000mm. The design shall be such as to permit easy extension of distribution boards at site on either end.

xxi) The distribution boards shall consist of vertical sections, fabricated from a minimum of 1.6 mm thick sheet steel, shaped and reinforced to form a rigid freestanding structure.

xxii) The minimum clearance of the power terminal lug from the bottom plate shall be maintained as 200mm.

xxiii) The AC distribution board designed for 4-wire system shall have a fully insulated neutral bus of cross-section same as the main phase buses.

xxiv) Anchor bolts and nuts for each distribution board shall be supplied along with the distribution board.

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xxv) All distribution boards mounted indoor shall be provided with enclosure protection of IP 50 as per IEC.

xxvi) All distribution boards shall have with required numbers of Brass (for Power cables) cable glands and PVC cable glands for incoming and outgoing cables/feeders as per conduit/ cables schedule and as described on the bill of materials.

Distribution board shall consist of fused switch/MCCB/MCB of ratings as detailed in the drawing or bill of quantities. It should be factory assembled, flush mounted type, of mild steel cabinets, having dead front with hinged door, flush locks, and a typewritten card directory on the door identifying each circuit. The DB box shall be finished with powder coated paint on all sides. Branch circuit breakers used for various circuits shall be mounted in a group at the suitable location of the board. The outgoing circuit breakers shall be quick make and break type equipped with overload thermal and short circuit magnetic tripping protection.

Mounting: The board shall be mounted with the top of the cabinet 2 000 millimetre above the finished floor unless otherwise noted in the drawings. The cabinet shall be plumb and square with the wall of the structure.

END OF SECTION 005

SECTION 006 - INDOOR LIGHTING

GENERAL

This Section includes the Indoor lighting fixtures with their illumination requirements, construction features and mounting in details with followings.

1. Indoor lighting fixtures with lamps and ballasts.

2. COB & SMD Indoor LED panel 3. Lighting fixtures mounted on skin surface of building.

This specification covers the design, complete supply and installation of the lighting system for the project including all necessary supervision, labor, tools, equipment and accessories, miscellaneous materials, testing, and putting in acceptable operation of the lighting system.

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The originality in manufacture of all lighting fixtures shall be certified by the manufacturer, or the authorized dealers of the manufacturer. The specification shall cover the lighting fixtures and the lamps including all necessary accessories. The contractor shall furnish and install all the fixtures with lamps and accessories as per specification and drawings. The location of the fixtures shall be as per layout plan of electrical lighting drawing and as per instruction by the Owners/Engineers.

Light fixtures shall be provided on ceilings, wall, walkway floor and outdoor carefully aligned and leveled. Adequacy of support system and alignment shall be approved. Approved method of seismic requirements should be applied when installing the all types of fixtures. When installing the indoor recessed type light fixtures minimum two numbers of ceiling support with metal rope should be provided in each fixture.

Fixture shall be left clean at the time of final completion of work, every item shall be in proper working condition, Fixtures shall be protected from dust, paint, dirt, debris etc.

Manufacturer product catalogue number and/or description in the fixture schedule shall establish quality, style, finish etc. similar fixture, which shall meet the exact specially, or quality features and similar appearance shall be submitted for prior approval.

DEFINITIONS

1. HPF: High Power Factor.

2. BF: Ballast factor.

3. LED: Light Emitting Diode

4. COB: Chip on Board

5. SMD: Surface mounted Diode

SUBMITTALS

Contractor should submit the owner, for each type of light fixtures as described in the BOQ (Unless mentioned as client supply), drawings (Manufacturers product data sheet, catalogues etc) with internal components (ballast, starter, holder etc.) arrangements, types for indoor or outdoor application, recessed or surface mounting, overall dimensioned, size and types of fixtures, related hardware etc.

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MANUFACTURER

Use only one single manufacturer for all types of indoor lighting with ballast, lamps, starter etc.

Recommended manufacturer for indoor CFL fixtures, LED panels: Philips, Osram, Wipro, Legero

Recommended manufacturer for outdoor CFL decorative sets: Philips, Decon

CODES AND STANDARDS

The lighting fixtures and installation shall meet the requirements of the latest edition of the National Electrical Code (NEC-2005) of the National Fire Protection Association. In addition any rules or regulations applicable to the work shall be followed. In case of any discrepancy, the more restrictive rule shall be binding.

SCOPE OF WORKS

All equipment shall be complete and operative in all details and shall be left in a satisfactory working condition. The Contractor shall furnish and install all materials and equipment, which are obviously a part of the complete illumination installation and without any additional charge to the Employer.

The miscellaneous materials include, but are not limited to, all conduit, wires, controls, lighting panel boards, junction boxes, fittings, supports and other accessories required for the complete installation and satisfactory operation of the indoor lighting system.

The Contractor shall perform the following work in addition to furnishing and delivering of the equipment, materials and accessories specified hereinafter in this specification.

(a) Assembling at the plant site (b) Erection and complete installation (c) Testing of all equipment (d) Commissioning of all equipment prior to trial operation (e) Trial operation and all necessary adjustments prior to initial operation.

REQUIREMENTS

Lighting Fixtures and Lamps

i) Provide fixtures on ceilings carefully aligned and levelled. Adequacy of support system and alignment shall be as approved.

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ii) Take care to properly install recessed fixtures including adequate provisions of light-leak-proof installation.

iii) Provide all light outlets with a fixture. Where outlet symbols on drawings do not have a type of designation, provide a fixture for such location the same are those used in similar or like locations.

iv) Provide lamps for all fixtures, of first quality, and appropriate and as approved for the use intended. Incandescent lamps shall be rated 230 - 250 volt, except where otherwise indicated.

v) Fixture diameters and sizes shall be as specified in Bill of Quantities or as approved.

vi) Leave fixtures clean at the time of final completion of work; every item shall be in proper working order. Protect fixtures as required from dirt, dust, paint, debris, etc.

vii) Verify, ceiling construction, recessing depth, and other constructional details prior to installation. Provide plaster frame for all fixtures recessed in plaster ceilings.

viii) All fixtures shall be supplied with complete accessories like lamps, ballasts, power factor improvement capacitors, starters wherever applicable etc, outdoor type fixtures shall be provided with weather/water proof only, and with required accessories for outdoor application.

ix) All fixtures shall be supplied complete with lamps suitable for operation on a supply voltage and with variation in supply voltage to +/- 10%. Normal supply voltage shall be 1 Phase, 2 Wires, 400/230 volts, 50 Hz Neutral solidly grounded.

Specification for LED Fixtures and Lamps

x) All LED Panels shall be of minimum IP 20 for Interior and IP 42 for exterior or as specified in BOQ.

xi) Indoor ceiling mounted with high efficiency translucence (HET) diffuser 160-260V in 1-phase L-N.

xii) Colour temperature 3200-5000 K, or as described on BOQ. xiii) LED manufacture - CREE, EPISTAR, OSRAM or SAMSUNG. xiv) CRI (colour rendering index) - more than 80 CRI. xv) Driver - Electronic Ballast. xvi) Power factor 0.9. xvii) Beam Angle - 120 degree for SMD, 60 degree for COB. xviii) Light Output (system luminous) - 100 lm/watt (in average). xix) Voltage - 160V - 260V. xx) Life - 50000 hours. xxi) Standard compliance - IEC 60598-1; Environnent – RoHS.

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COORDINATION

Coordinate layout and installation of Ceiling or Wall lighting fixtures and suspension system with other construction that penetrates ceilings or is supported by them.

WARRANTY

3. Manufacturer Warranty: 1 year from the date of project hand-over for any manufacturing defect.

4. Contractors Warranty: 1 year from the date of installation completed for any installation defect.

FIELD CONTROL

Inspect each installed fixture for damage. Replace damaged fixtures and components.

Verify normal operation of each fixture after installation.

END OF SECTION 006

SECTION 007 – MANUAL FIRE ALARM SYSTEM

GENERAL

The under mentioned technical specifications, code of practices, standard, etc. shall strictly be followed by the engineers, supervisors, bidder, supplier, contractor, for the supply, installation and testing of the Fire Alarm System in the proposed building project.

This Specification section included the followings:

Smoke and Heat Detectors

Response Indicators

Manual Call Points

Sounder/Strobe

Fire Alarm Cable Terminal Block

SUBMITTALS

Product Data: For each type of product used for project.

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MANUFACTURER

Use only one single manufacturer for Entire Fire alarming system components.

Smoke detector -System Sensor, Honeywell, C-Tec MCP -System Sensor, Honeywell, C-Tec Sounder -System Sensor, Honeywell, C-Tec Response Indicator -System Sensor, Honeywell, C-Tec

SMOKE DETECTOR:

The ionization detector model shall be equipped with a dual- chamber, uni- poplar sensing chamber. The nominal sensitivity of the detector shall be 3.5 % / meter as measured in a UL smoke box and shall not alarm when it is exposed to wind guest up to 150 meter per minute. The detector shall be equipped with a light – emitting diode (LED) that is visible from the floor. This LED shall blink every ten seconds to indicate that the detector is operational, in standby, and latch on as visual indication of alarm. The detector shall be capable of applying an output voltage to an optional remote LED enunciator as an indication of its status. It shall be possible to perform a calibrated sensitivity and performance test on the detector without the need for generating smoke. The test method shall test all detector circuits. The detector screen and cover assembly shall be easily removable for cleaning or replacement. It shall maintain stable operation when it is exposed to wind gusts of up to 900 meter per minute. The detector shall use a plug- in, low profile design that is both unobtrusive and aesthetically pleasing. A line plug- in base for a variety of applications shall be available for use with the detectors. Wire connections shall be made by means of a clamping plate and screw. These bases shall allow for mounting directly to a surface or to 75mm octagon box.

RESPONSE INDICATORS:

Response indicators shall be installed outside of the closed room and LED of response indicator shall help to detect fire inside the room.

MANUAL CALL POINTS (MCP)

Manual call points shall be read switch operation ABS plastic case, PVC quoted glass, test key attach.

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SOUNDER/STROBE

This shall be capable of operating at 24 V DC. Sounder/Strobe shall have an operating temperature between 0 Deg Celsius and 50 Deg. Celsius Sounder shall have 8 tone options, selected by means of clips. Strobe shall be powered independently of the sounder and shall operate at 24 V DC.

FIELD CONTROL

As per manufacturer recommendations

Remove malfunctioning units, replace with new units, and retest as specified above.

END OF SECTION 007

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TECHNICAL SPECIFICATIONS FOR

IT WORKS

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Detailed Scope of Work – Infrastructure: 1. Supply, Installation & Commissioning of Various brand new Goods/Service for the

Data Center at National Election Commission, Bahadur Bhawan, Kathmandu

2. Demolish, Remove, disconnect various existing equipments and reinstall of them in

newly constructed Data center at National Election Commission, Bahadur Bhawan,

Kathmandu

Physical Infrastructure

1. Raised Access Flooring

Electrical and Network System of Data Center

2. Data Center Electrical System

3. Network Management of Data Center

4. Rack Based Automatic Transfer Switch

DATA CENTER Security and Control System

5. AC Controller / PAC

6. Fire Alarm & Detection System

7. IP Based Surveillance System

8. 11 KVA UPS with Battery Backup

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Raised Access Flooring System: General work description: Remove from and reinstall existing access floor system (raised floor system) to house Servers and Network devices in equipment racks.

Server Room area : Approx 4.7 m x 3.6 m

Finished raised floor height: Up to 450 mm (max. as feasible)

Under floor structure: Bolted pedestal and stringers.

Insulation: Nitrile Based Insulation (Under raised floor)

1. Provide modular panels complying with the following requirements that are interchangeable with other standard field panels, and can be easily relocated by one person, using a lifting device, without disturbing adjacent panels or understructure. Installed panels with floor covering in place are to be free of exposed metal edges.

2. The installed raised floor structure should be able to sustain seismic movement with installed load, matching with the building structure.

3. Panel type: Fabricated panels with a die formed all-steel bottom pan, fully welded to a die-cut full-hard steel top sheet to form a structural unitized construction. Completed panels to be filled with light-weight cement composite fill with a protective powder-coat epoxy finish.

4. Solid Panels: Flat, solid top surface with Static-Resistant High Pressure Laminate (HPL) Floor Covering and non-slippery finish with sufficient thickness to sustain long life without fading. It should be easy to clean.

5. Pedestals: Provide manufactures standard pedestal assembly including base, column with provisions for height adjustments, and head (Cap), made of steel.

a. Base: Square base plate should be not less than 16 square inches (103 sq. mm) of bearing area or as per the manufacturer’s specification to bear the load as specified.

b. Column: Welded to base plate and of height required to bring finished floor to elevations indicated.

c. Head: Pedestal head to accept stringers as specified below. d. Stringer System: Manufacturer’s modular steel stringer system designed and

fabricated to interlock with pedestal head and to form a grid pattern with a stringer under each edge of each floor panel and a pedestal under each corner of each floor panel. Protect steel component against corrosion with manufacturer's standard galvanized finish.

6. Provide necessary bolting as specified by the manufacturer to maintain stability of the floor to maintain stability during normal loading and unloading of equipment, general uses and seismic condition.

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7. The finished floor level should be horizontal (length and diagonal room space) with minimal tolerance maintaining the finished floor height leveled throughout the floor area.

8. Fabrication Tolerances: As low as possible to avoid tile movement and accumulation of dust and fibers during uses and cleaning.

9. Panel Attachment to Understructure: By gravity. 10. All the cut surfaces of the panels need to be sealed properly as recommended by the

manufacturer. The cable void cut out should also be lined with suitable material and gourmets to avoid damage to the cable insulation coating and air sealing.

11. Fire resistant paint and coating in tiles. Specification

S.No. Description Specification

2 Dimension 600 mm x 600 mm

3 Thickness 40 mm Min

4 Uniform Load Bearing

1300 Kg / Sq Mt

5 Concentrated Load 360 Kgs

6 Pedestal Axial Load

2200 Kgs

7 Finishing Static-Resistant High Pressure Laminate (HPL)

8 Finished Floor Height

450 mm Max.

Markings: The floor should be marked appropriately for the position where pedestal and other support structures shall be fixed. This marking is required to allow electrical and plumbing works to design and implement necessary installation, without disturbing the raised floor structure. Finishing and hand over:

1. All the panel tiles and understructure material should be delivered in proper packaging / wrapping with labels to avoid handling damage and easy identification.

2. All the work area and installation to be cleaned and vacuumed at the time of hand over.

3. Any damage, scratches to the surface tile and understructure material needs to be replaced by the fresh panels / material by the supplier at their own cost.

Existing Quantity: 46pcs (with raised floor structure)

New quantity: 10pcs (and required accessories)

Nitrile Insulation: 480 sq. ft.

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Electrical System with Cable Management: General Work Description: Supply, Installation and Commissioning of the Fire Resistant Cable Trays, Cabling, Electric Sockets and Accessories, Separate Grid Panel Box at suitable location

UPS Supplied Panel Box shall be fitted near by the Server Room/UPS Area.

Power status shall be remotely monitored with Alarm in case of abnormal condition.

Detailed Description: Cable Tray

1. Fire Resistant Cable Tray shall be placed under the Raised Flooring as per Desirable Condition.

2. Cable Tray width is 4" to 6" in size. 3. Cable Tray shall have covering to cover all wires and protect from damage by Rodents. 4. Separate Cable Tray is desirable for Power, Network & Telephone Cabling. 5. Cable Trays shall be painted with High Quality Fire Resistant Powder Coat Paint to

prevent Corrosion. 6. Cable Trays assemblies and components should be built as per the normally accepted

international standard for given system and it should be properly labeled for the same.

Power Cabling & Fittings

1. Hi Quality Pure Copper Cable with NS standard. 2. Manufacturer shall have ISO certification. 3. Cabling shall be done with the capability of Redundant Sockets for Each Racks of 32

Amp. C Type Industrial Sockets. 4. Emergency lights with bulb, holder and wires - 3 points.

Control Panels

1. Hi Quality Fire Resistant Powder Coated Panels– Separate for UPS & Grid Power Supply

2. Hi and Low Voltage and Surge Power Protection System 3. Separate & Redundant Double Pole MCB of each 32 Amp Power Socket 4. 5 pairs of 32 Amp Power Socket Wiring with Sockets with required Accessories

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Quantity Schedule

Description Value / Quantity

Cable Trays with cover (100mm width) (0.9mm thick)

40 ft.

Power Points (Redundant-32 Amp Industrial C-Socket)

5 x 2 = 10

MCB - Double Pole (25/32Amp) 5 x 2 = 10

MCB - Double Pole (63Amp) 2

MCCB – 100 Ah 1

MCB – 40 Ah (3 pole) for AC and UPS 4

Bus Bar Box 1

Panel Box (Modular) (450mm x 450 mm) 4

Panel Box (for UPS) 2

Wiring for all devices 1

Remote Monitoring Controller with accessories 1

Power Cables for Power 10 sq mm - 2 core Up to 100 meter 4 core armored Cu cable 25 sq mm up to 50 meter

Network Server Rack:

General Work Description: Disconnect, remove and reinstallation and Commissioning of the Network Server Rack

There are total 3 sets of existing Server racks which needs to be reinstall.

Detailed Description: Network Rack

1. Disconnect all used cable in temporary basis so that no works can be disturbed during the period from existing 19” 42U Floor standing Server rack.

2. Clean and make ready for reinstallation of the same. 3. Rearrangement of all server and allied system within rack. 4. Cabling, termination and commissioning of New system using Existing rack 5. Some minor rectification works need to be carried out during reinstallation, Hinges and

door locks need to put perfect working condition, separator channels need to be modified to comply with new system as per clients instruction.

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Network Cabling Solution: General Work Description: Supply, Installation and Commissioning of the Network Cabling, Labeling and Accessories

The room size is approx. 230 sq. ft.

Detailed Description: Network Cable

6. Hi Quality CAT 6 Pure Copper Cable with the standard of TIA & UL 7. Redundant (N+1) Network Cabling shall be done from One Rack to Another 8. All labeling of wires and devices shall be done. 9. CAT 6 Patch Panels with Keystone Jacks and Face Plates for Network Monitoring Room,

UPS Room and Server Room 10. Testing of Each Network Point and cabling report shall be generated by Fluke meter for

compatibility of Gigabit networking.

Quantity:

Patch Panel: 4 unit Patch Cords (1, 2, 3 meters): 100 units (multi-colour)

Cat 6 UL Listed Cable with required Accessories and keystones jacks: 2 rolls + accessories

42 U Server Rack: 3 units

Cable guide: 8 units

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Automatic Transfer Switch (ATS): General Work Description:

Supply, installation, testing and commissioning of Automatic Transfer Switch (ATS) complete with necessary cables, main controller system with display and controls, probe, cables etc.

Detailed Description:

1. ATS shall be Rack Mountable with minimum of 16 ports C13 sockets + 4 ports C19 sockets 2. ATS must be compatible with Modbus, Bacnet, SNMP, DCIM and Building Management

System Compatible. ATS shall have a input voltage from 180 to 260 VAC, Frequency of 50 Hz (+/-5 Hz.)

3. Redundant 2 Input Connections

4. 16 Ports C13 Output 5. 4 Ports C19 Output 6. Must have built in Overload Protection

7. Should have aggregate current metering display and send overload warning locally or via network

8. The system should have option to select source preference.

Quantity Schedule Main Device (16 Amp): 1 unit Accessories & Cables: As required

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Computer Room wall split Air Conditioner: General Work Description: Supply, Installation and Commissioning of wall split Air Conditioner which shall be used for Data Center and UPS Room.

Brand : Daikin, Mitsubishi or Equivalent

18.1 KW max. at 24 deg Centigrade Air conditioner

Suitable outdoor unit with indoor units

Floor area: Approx 300 sq. ft.

Quantity: 2 Units

Detailed general requirement:

1. Individual wall split AC shall be used for both Data Center and UPS Room. 2. Foundation bolts, Grouting, Vibration Isolators, Base Frames etc. for mounting the

outdoor condensing unit, indoor Cooling Unit and other equipment. Specification MODEL Wall split

Supply Voltage 230 volts/1Phase/50 Hz.

Air Volume (adjustable)

Nominal Air flow 4900 [m3/h] or higher

Minimum Air flow 3000 [m3/h] or higher

Cooling Capacity at 24 deg. C

Total max 18.1 kW

Sensible max 16.3 kW

Total min 16.9 kW

Sensible min 12.8 kW

Humidifier 3 kg/h

Refrigerant R407C

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Smoke Detection System: General work description: Disconnect, Remove from existing data center, reinstallation, testing and commissioning of Smoke Detection and Alarm System. Installation Area :

Server room will be fitted with 450mm raised floor system.

UPS Room will contain Data Center UPS, Network Termination etc.

Under floor area will be used to provide power supply to the Server and network racks above the floor and some part of the networking back bone cabling.

Smoke Detectors shall be installed in Room void, inside False Ceiling as well as under Raised Floor with Cross Zoning Alarm System.

Detailed general requirement:

1. The Fire control system and its components shall be UL listed and FM approved for use as a

local fire alarm system with GAS releasing device service.

2. The Fire control system shall perform all functions necessary to operate the system

detection, actuation and auxiliary functions.

3. The control panel should have (16x2) LCD Display.

4. It should be installed with necessary alarm indication (audio and visual) and indicate the

alarm level (error conditions, alerts, pre discharge and discharge with gas release count

down at suitable location of the site.

5. Three 24V Sounder Output (Fire, after Cross zone, after gas release).

6. The system should have Two mode operation facility (Auto / Manual).

7. The proposed system should have capability to communicate / interface with building /

infrastructure management system and data center information management system.

8. The system should have Gas Inhibit and Instant release facility

9. Remote Network Monitoring System shall be provided to report of any Fire event through

DCIM (Serial RS 485).

Quantity (existing) Ionization/Optical Smoke Detectors: 10 units 4 zone Fire Panels: 1 unit Hooter: 2 units Gas Release/Abort Breaker: 2 units

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IP Surveillance System: General Work Description:

Disconnect, Remove from existing data center, reinstallation, testing and commissioning of IP Surveillance System complete with necessary Cables, Controllers, NVR in the server room.

Detailed Description: IP Camera

1. 2 MP or higher CMOS Mini Vandal-proof Network Indoor Dome Camera 2. Maximum Resolution up to 2 mega pixels, 12.5 fps(50Hz)/15 fps(60Hz) @ 1600×1200, 3. Real time video at Full HD 720P 4. Adopt advanced video compression with high compression ratio 5. 4 mm, F1.8 Fixed Iris Lens 6. PoE compatible 7. TCP/IP,HTTP,DHCP,DNS,DDNS,RTP/RTSP, PPPoE, SMTP, NTP Protocol Compatible 8. Must support night vision and capable to capture during no light condition.

NVR (Hardware/Software)

1. Minimum 8 ch Full 960H input 2. Adopt the latest H.264 High profile compression algorithm; reduce bit-rate by 30%. 3. Support HDMI display resolution. 4. All cameras should have real time display, recording, playback & remote view. 5. Provide two encoding streams for fluent network transmission. 6. Multiple privacy masks and flexible OSD display. 7. Easily backup via USB disk, network and CMS software. 8. Bidirectional talk. 9. Customized audible warning on alarm event (through external speaker connection) 10. Optional 3G/Wi-Fi extension 11. Should have at least 90 days backup record. 12. 2 SATA Interfaces for two HDDs with a maximum capacity of up to 4TB each 13. Impressive bit rates of up to 50Mbps

Quantity Schedule NVR Hardware/Software System: 1 unit IP Camera: 5 units

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11 KVA UPS with Battery Backup (Existing): General Work Description: Disconnect, remove, reinstallation, testing and commissioning of existing 11 KVA UPS with Battery Backup, complete with necessary cables, Battery Rack and associated Ethernet communication port and centralized software for database and activity log maintenance and reporting capability. UPS Specification

Input Supply

Nominal Input Voltage Single Phase (220-230-240VAC) or Three Phase (380-400-415) user selectable

Input Voltage Range for Mains operations 160-280 VAC

Input Total Harmonic Distortion Less than 5 %

Input 1 Phase or 3Phase ( Autosensing)

Input frequency 40 - 70 ( Autosensing)

Bypass Internal Bypass (Automatic and Manual)

Output

Output Power Capacity 11 KVA or 8800 watts

Nominal Output Voltage Single Phase (220-230-240VAC) or Three Phase (380-400-415) user selectable

Efficiency at Full Load Up to 94%

Output Frequency (sync to mains) 47 - 63 Hz

Waveform Type Sine wave

Output 1 Phase or 3Phase ( Autosensing)

Battery

Nominal DC Voltage 384V DC (12v x 32 units)

Battery Type Sealed Maintenance Free (100 Ah)

Communications and Management

Interface Port(s) RJ-45 10/100 Base-T, DB-9 RS-232

Emergency Power Off (EPO) YES

Control Panel LED or LCD Display with Indicator Bar and other status

UPS 11 KVA : 2 units (existing)

Battery (100 Ah or higher Sealed Maintenance Free) : 64 units (to be checked with existing )