thane municipal corporation, thane · thane municipal corporation, thane general specifications...

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Signature of Contractor No. Of Corrections City Engineer, TMC, Thane

THANE MUNICIPAL CORPORATION, THANE

PUBLIC WORKS DEPARTMENT

NAME OF WORK - Widening & Strengthening of Pokharan Road No. 1 From Cadbury Junction to Devdayanagar Junction

VOLUME-I SPECIFICATIONS

City Engineer,

Thane Municipal Corporation, Thane.

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NAME OF WORK : Widening & Strengthening of Pokharan Road No. 1 From Cadbury Junction to Devdayanagar Junction.

INDEX

Sr.No. Description Page No.

From To

1 General Specification 2 16

2 Item wise Specification 17 41

3 Detailed Specification 42 44

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GENERAL SPECIFICATIONS NAME OF WORK : Widening & Strengthening of Pokharan Road No. 1 From Cadbury

Junction to Devdayanagar Junction.

Specification for FORM WORK ( MoRT&H Chapter No.1500)

1501 Description

Formwork shall include all temporary or permanent forms required for forming the concrete for the shape, dimensions and surface finish, as shown on the drawing or as directed by the Engineer, together with all Props, staging, centering, scaffolding and temporary construction required for their support.

1502 MATERIALS

All materials shall comply with the requirements of IRC: 87. Materials and components used for formwork shall be examined for damage or excessive deterioration before use/re-use and shall be used only if found suitable after necessary repairs. In case of timber formwork, the inspection shall not only cover physical damages but also signs of attacks by decay, rot or insect attack or the development of splits. Forms shall be constructed with metal or timber. The metal used for forms shall be of such thickness that the forms remain true to shape. All bolts should be countersunk. The use of approved internal steel ties or steel or plastic spacers shall be permitted. Structural steel tubes used as support for forms shall have a minimum wall thickness of 4 mm. Other materials conforming to the requirements of IRC: 87 may also be used if approved by the Engineer.

1503 DESIGN OF FORMWORK

1503.1 The design, erection and removal of formwork shall conform to IRC:87 "Guidelines for Formwork, False work and Temporary Structures" and these specifications. The forms shall be such as to ensure that they can be conveniently removed without disturbing the concrete. The design shall facilitate proper and safe access to all parts of formwork for inspection.

1503.2 The Contractor shall furnish the design and drawing of complete formwork (i.e. the forms as well as their supports) for approval of the Engineer before any erection is taken up. if proprietary system of formwork is used, the Contractor shall furnish detailed information as per Appendix, 1500/1, to the Engineer for approval. Notwithstanding any approval or review of drawing and design by the Engineer, the Contractor shall be entirely responsible for the adequacy and safety of formwork.

1503.3 In the case of prestressed concrete superstructure, careful consideration shall be given to redistribution of loads on props due to prestressing.

1504 WORKMANSHIP

1504.1 The formwork shall be robust and strong and the joints shall be leak-proof. Ballies shall not be used as staging. Staging must have cross bracings and diagonal bracings in both directions. Staging shall be provided with an appropriately designed base plate resting on firm strata.

1504.2 The number of joints in the formwork shall be kept to a minimum by using large sized panels. The design shall provide for proper "soldiers" to facilitate alignment. All joints shall

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be leak proof and must be properly sealed. Use of PVC joint sealing tapes, foam rubber or PVC T-section, is essential to prevent leakage of grout.

1504.3 As far as practicable, clamps shall be used to hold the forms together. Where use of nails is unavoidable minimum number of nails shall be used and this shall be of the double headed type alternatively if the nails are of the normal type, they shall be left partially projecting without being driven to their full length so that they can be withdrawn easily.

1504.4 Use of ties shall be restricted, as far as practicable. Wherever ties are used they shall be used with HDPE sheathing so that they can easily be removed. No parts prone to corrosion shall be left projecting or near the surface. The sheathing shall be grouted with cement mortar of the same strength as that of the structure.

1504.5 Unless otherwise specified, or directed, chamfers or fillets of size 25 mm x 25 mm shall be provided at all angles of the formwork to avoid sharp corners. The chamfers, beveled edges and mouldings shall be made in the formwork itself. Opening for fixtures and other fittings shall be provided in the shuttering as directed by the Engineer.

1504.6 Shuttering for walls, sloping members and thin sections of considerable height shall be provided with temporary openings to permit inspection and cleaning out before placing of concrete.

1504.7 The formwork shall be constructed with pre-camber to the soffit to allow for deflection of the formwork. This shall be in addition to the pre-camber for the permanent structure as shown on the drawings.

1504.8 Where centering trusses or launching trusses are adopted for casting of superstructure, the joints of the centering trusses, whether welded, riveted or bolted shall be thoroughly checked periodically. Also, various members of centering trusses should be periodically examined for proper alignment and unintended deformation before proceeding with the concreting. They shall also be periodically checked for any deterioration in quality due to steel corrosion. Launching truss, casting truss of span more than 40 m and travelling forms, shall be load tested before they are put to use.

1504.9 The formwork shall be so made as to produce finished concrete true to shape, line and levels and dimensions as shown on the drawings, subject to the tolerances specified in respective Sections of these specifications, or as directed by the Engineer.

1504.10 Where metal forms are used, all bolts and rivets shall be countersunk and well ground to provide a smooth, plane surface. Where timber is used it shall be well seasoned, free from loose knots, projecting nails, splits or other defects that may mar the surface of concrete.

1504.11 Forms shall be made sufficiently rigid by the use of ties and bracings to prevent any displacement or sagging between supports. They shall be strong enough to withstand all pressure, ramming and vibration during and after placing the concrete. Screw jacks or hard wood wedges where required shall be provided to make up any settlement in the form work either before or during the placing of concrete.

1504.12 The formwork shall ensure the correct final shape of the structure, with the calculated amount of Positive or negative camber. The deformation of falsework, scaffolding or propping and the instantaneous or deferred deformation due to various causes arising in Prestressed structures, shall be properly accounted for.

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1504.13 Suitable camber shall be provided to horizontal members of structure, especially in long spans, to counteract the effects of deflection. The formwork shall be so fixed to provide for such camber.

1504.14 The formwork shall be coated with an approved release agent that will effectively prevent sticking and will not stain the concrete surface. Lubricating oils (machine oils) shall be prohibited for use as coating.

1505 LINING OF FORMWORK

The formwork shall be lined with material approved by the Engineer so as to provide a smooth finish of uniform texture and appearance. This material shall leave no stain on the concrete and shall be so fixed to its backing as not to impart any blemishes. It shall be of the same type and obtained from only one source throughout for the construction of any one structure. The contractor shall make good any imperfections in the resulting finish as required by the Engineer. Internal ties and embedded metal parts shall be carefully detailed and their use shall be subject to the approval of the Engineer.

1506 PRECAUTIONS

The following precaution shall be observed:

i) It shall be ensured that any cut-outs or openings provided in any structural member to facilitate erection of formwork are closed with the same grade of concrete as that of the structure, after formwork is removed.

ii) Provision for safe access to the formwork shall be made at all levels as required.

iii) Close watch shall be maintained to check for settlement of formwork during concreting and any settlement shall be promptly rectified.

iv) Natural ground shall be checked for bearing capacity and likely settlement before erection of the staging.

v) It shall be ensured that water used for curing or rain water does not stagnate near the base plate of the staging.

vi) For shutters used for deep and narrow member, temporary openings in the sides shall be provided to facilitate pouring and compaction of concrete.

1507 PREPARATION OF FORMWORK BEFORE CONCRETING

The inside surfaces of forms shall, except in the case of permanent formwork or Where otherwise agreed to by the Engineer, be coated with a release agent supplied by approved manufacturer or of an approved material to prevent adhesion of concrete to the formwork Release agents shall be applied strictly in accordance with the manufacturer's instructions and shall not be allowed to come in contact with any reinforcement or prestressing tendons and anchorages. Different release agents shall not be used in formwork for exposed concrete.

Before re-use of forms, the following actions shall be taken:

i) The contact surfaces of the forms shall be cleaned carefully and dried before applying a release agent.

ii) It should be ensured that the release agent is appropriate to the surface to be coated. The same type and make of release agent shall be used throughout on similar formwork materials and different types should not be mixed.

iii) The form surfaces shall be evenly and thinly coated with release agent. The vertical surface shall be treated before horizontal surface and any excess wiped out.

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iv) It shall be ensured that the reinforcement or the surface of the hardened concrete shall not come in contact with the release agent.

All forms shall be thoroughly cleaned immediately before concreting.

The Contractor shall give the Engineer due notice before placing any concrete in the forms to permit him to inspect and approve the formwork. However, such inspection shall not relive the contractor of his responsibility for safety of formwork, men, machinery, materials and finish or tolerances of concrete.

1508 REMOVAL OF FORMWORK

The scheme for removal of formwork (i.e. de-shuttering and de-centering) shall be planned in advance and furnished to the Engineer for scrutiny and approval. No formwork or any part thereof shall be removed without prior approval of the Engineer. The formwork shall be so removed as not to cause any damage to concrete. Centering shall be gradually and uniformly lowered in such a manner as to permit the concrete to take stresses due to its own weight uniformly and gradually to avoid any shock or vibration. Form work shall not be released unless the concrete has achieved strength of at least twice the stress the concrete may be subjected at the time of the removal of formwork. When no test is conducted for determination of strength of concrete and where the time of removal of form work is not specified, the same shall be as under:

a) walls, piers, abutments, columns and vertical faces of structural members

12 to 48 hours as may be decided by the Engineer

b) Soffits of Slabs (with props left under) 3 days

c) Props left under slabs 14 days

d) Soffits of Girders (with props left under) 7 days

e) props (left under girders) 21 days

The above time schedule is applicable when ordinary Portland Cement is used without any admixtures at an ambient temperature exceeding 10°C.

For concrete made with Portland pozzolona cement, Portland slag cement or mineral admixtures, additional cube samples shall be taken for verifying the strength of concrete to decide the time of de-shuttering.

Where there are re-entrant angles in the concrete sections, the formwork should be removed at these sections as soon as possible after the concrete has set, in order to avoid cracking due to shrinkage of concrete.

Additional precautions as given in Clause 8.17 of IRC: 87 shall also be followed.

1509 RE-USE OF FORMWORK

When the formwork is dismantled its individual components shall be examined for damage and damaged pieces shall be removed for rectification. Such examination shall always be carried out before their use again. Before re-use all components shall be cleaned of deposits of soil concrete or other unwanted materials. Threaded parts shall be oiled after cleaning.

All bent steel props shall be straightened before re-use. The maximum permissible deviation from straightness is 1/600 of the length. The maximum permissible axial loads in used props

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shall be suitably reduced depending upon their condition. The condition of the timber Components, plywood and steel shuttering plates shall be examined closely for distortion and defects before re-use.

1510 SPECIALISED FORMWORK

Specialized formwork such as slipform, floating caisson and travelling form, wherever used shall be designed and detailed by competent agencies and a set of complete working drawings and Installation instructions supplied to the Engineer. In case proprietary equipment is used, the supplier shall furnish drawings, details, installation instructions etc, in the form of manuals along with the formwork. For slipform, the rate of climb of the formwork shall be designed for each individual case taking into account various parameters including the grade of concrete, concrete strength, concrete temperature, ambient temperature and concrete admixtures. For floating caisson, the details of fabrication, floating to site and placing in position shall be as given in Clause 1203.5 of these Specifications. In order to verify the time and sequence of striking/removal of specialized formwork, routine field tests for the consistency and strength development of concrete are mandatory. For specialized formwork, the form lining material may be either plywood or steel sheet of appropriate thickness.

1511 TESTS AND STANDARDS OF ACCEPTANCE

The materials shall be tested in accordance with these Specifications and shall meet the prescribed criteria. The work shall conform to these Specifications and shall meet the prescribed standards of acceptance.

1512 MEASUREMENTS FOR PAYMENT

Unless stated otherwise, the rate for concrete in plain concrete or reinforced concrete or prestressed concrete, shall be deemed to include all formwork required in accordance with this Section, which shall not be measured separately.

Where it is specifically stipulated in the Contract that the formwork shall be paid for separately measurement of formwork shall be taken in square metre,: of the surface area of concrete which is in contact with formwork.

1513 RATE

The unit rate of plain concrete or reinforced concrete or prestressed concrete as defined in respective Sections of these Specifications, shall be deemed to cover the costs of all formwork and staging, including cost of all materials, labour, tools and plant required for design, construction and removal of formwork and supervision as described in this Section including properly supporting the members until the concrete is cured, set and hardened as required.

Where the contract unit rate for formwork is specially provided as a separate item in the contract, it shall include the cost of all materials, labour, tools and plant required for design, construction and removal of formwork and supervision as described in this Section including properly supporting the members until the concrete is cured, set and hardened as required.

Specification for STEEL REINFORCEMENT (MoRT&H Chapter No.1600)

1601 DESCRIPTION

This work shall consist of furnishing and placing coated or uncoated mild steel or high strength deformed reinforcement bars of the shape and dimensions shown on the drawings and conforming to these Specifications or as approved by the Engineer.

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1602 GENERAL

Steel for reinforcement shall meet the requirements of Section 1000 of these specifications.

Reinforcements may be either mild steel or high strength deformed bars. They may be uncoated or coated with epoxy.

1603 PROTECTION OF REINFORCEMENT

Uncoated reinforcing steel shall be protected from rusting or chloride contamination. Reinforcements shall be free from rust, mortar, loose mill scale, grease, oil or paints. This may be ensured either by using reinforcement fresh from the factory or by thoroughly cleaning it using any suitable method such as sand blasting, mechanical wire brushing etc., as directed by the Engineer. Reinforcements shall be stored above the ground in a clean and dry condition, on blocks, racks or platforms and shall be suitably marked to facilitate inspection and identification.

Portions of uncoated reinforcing steel and dowels projecting from concrete, shall be protected within one week after initial placing of concrete, with a brush coat of neat cement mixed with water to a consistency of thick paint. This coating shall be removed by lightly tapping with a hammer or other not more than one week before placing of the adjacent pour of concrete. Coated reinforcing steel shall be protected against damage to the coating. If the coating on the bars is damaged during transportation or handling and cannot be repaired, the same shall be rejected. In case of fusion bonded epoxy coated reinforcement or hot dipped galvanized bars used, reference shall be made Clause 1010.3.2 of Section 1000 of these specifications.

1604 BENDING OF REINFORCEMENT Bar bending schedule shall be furnished by the Contractor and got approved by the Engineer before start of work. Reinforcing steel shall conform to the dimensions and shapes given in the approved Bar Bending Schedules. Bars shall be bent cold to the specified shape and dimensions or as directed by the Enginee using a proper bar bender, operated by hand or power to obtain the correct shape and rathr, of bends. Bars shall not be bent or straightened in a manner that will damage the parent material or the coating. Bars bent during transport or handling shall be straightened before being used on work. They shall not be heated to facilitate straightening.

1605 PLACING OF REINFORCEMENT

a) The reinforcement cage should generally be fabricated in the yard at ground level and then shifted and placed in position. The reinforcement shall be placed strictly in accordance with the drawings and shall be assembled in position only when the structure is otherwise ready for placing of concrete. Prolonged time gap between assembling of reinforcement and casting of concrete, which may result in rust formation on the surface of the bars, shall not be permitted.

b) Reinforcement bars shall be placed accurately in position as shown on the drawings. The bars, crossing one another shall be tied together at every intersection with binding wire (annealed), conforming to IS:280 to make the skeleton of the reinforcement rigid such that the reinforcement does not get displaced during placing of concrete, or any other operation. The diameter 1 mm

C) Bars shall be kept in position usually by the following methods:

i) In case of beam and slab construction, industrially produced polymer cover blocks of thickness equal to the specified cover shall be placed between the bars & formwork, subject to satisfactory evidence that the polymer composition is not harmful to concrete and

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reinforcement. Cover blocks made of concrete may be permitted by the Engineer, provided they have the same strength and specification as those of the member.

ii) In case of dowels for columns and walls, the vertical reinforcement shall be kept in position by means of timber templates with slots cut in them accurately, or with cover blocks tied to the reinforcement. Timber templates shall be removed after the concreting has progressed up to a level just below their location.

iii) Layers of reinforcements shall be separated by spacer bars at approximately one metre intervals. The minimum diameter of spacer bars shall be 12 mm or equal to maximum size of main reinforcement or maximum size of coarse aggregate, whichever is greater. Horizontal reinforcement shall not be allowed to sag between supports.

iv) Necessary stays, blocks, metal chairs, spacers, metal hangers, supporting wires etc. or other subsidiary reinforcement shall be provided to fix the reinforcement firmly in its correct position.

v) Use of pebbles, broken stone, metal pipe, brick, mortar or wooden blocks etc., as devices for positioning reinforcement shall not be permitted.

d) Bars coated with epoxy shall be placed on supports that do not damage the coating. Supports shall be installed in a manner such that planes of weakness are not created in hardened concrete. The coated reinforcing steel shall be held in place by use of plastic or plastic coated binding wires especially manufactured for the purpose. Refer Section 1000 of these Specifications for other requirements

e) Placing and fixing of reinforcement shall be inspected and approved by the Engineer before concreting is commenced.

1606 BAR SPLICES

1606.1 Lapping

All reinforcement shall be furnished in full length as indicated on the drawing. No splicing of bars, except where shown on drawing, shall be permitted without approval of Engineer. The length of the splice shall be as indicated on drawing or as approved by the Engineer. Where practicable over lapping bars shall not touch each other, and shall be kept apart by 25 mm or 1.25 mm times maximum size of coarse aggregate, whichever is greater. If this is not feasible, over lapping bars shall be bound with annealed steel binding wire not less than 1 mm diameter and twisted tight in such a manner as to maintain minimum clear cover to the reinforcement from the concrete surface. Lapped splices shall be staggered or located at points along the span where stresses are low.

1606.2 Welding

1606.2.1 Splicing by welding of reinforcement will be permitted only if detailed on the drawing or approved by the Engineer. Weld shall develop an ultimate strength equal to or greater than that of the bars connected.

1606.2.2 While welding may be permitted for mild steel reinforcing bars conforming to IS:432, welding of deformed bars conforming to IS:1786 shall in general be prohibited. Welding may be permitted in case of bars of other than Fe 240 grade including special welding grade of Fe 415 grade bars conforming to IS:1786, for which necessary chemical analysis has been secured and the carbon equivalent (CE) calculated from the chemical composition using the formula :

CE= C+ Mn/6+ Cr+Mg+V/5+ Ni+Cu/15 is 0.4 or less.

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1606.2.3 The method of welding shall conform to IS:2751 and IS:9417, any supplemental specifications and Clause 1904.8 of these Specifications to the satisfaction of the Engineer. Welding may be carried out by metal arc welding process. Oxy-acetelene welding shall not be permissible. Any other process may be used subject to the approval of the Engineer and necessary additional requirements to ensure satisfactory joint performance. Precautions on overheating, choice of electrode, selection of correct current in arc welding etc., should be strictly observed. All bars shall be butt welded except for smaller diameter bars (diameter of less than 20 mm) which may be lap welded. Single-V or Double-V butt joints may generally be used. For vertical bars single bevel or double bevel joints may be used. Welded joints shall be located well away from bends and shall be not less than twice the bar diameter away from a bend. Generally, shop welding in controlled conditions welding where necessary shall, however, be process, consumables, operators and welding procedure are adequate to produce and maintain uniform quality at par with that attainable in shop welding to the satisfaction of the Engineer. Joint welding procedures which are to be employed shall invariably be established by a procedure specification. All welders and welding operators to be employed shall be qualified by tests prescribed in IS:2751. Inspection of welds shall conform to IS:822 and destructive or non-destructive testing may be undertaken when deemed necessary. Joints with weld defects detected by visual inspection or dimensional check inspection shall not be accepted. Suitable means shall be provided for holding the bars securely in position during welding. It must be ensured that no voids are left in welding. When welding is done in two or three stages, the surface shall be cleaned properly after each stage. Bars shall be cleaned of all loose scale, rust, grease, paint and other foreign matter before carrying out welding. Only competent and experienced welders shall be employed on the work with the approval of the Engineer. No welding shall be done on coated bars. M.S. electrodes used for welding shall conform to IS:814.

1606.2.4 Welded joints shall preferably be located at points where steel will not be subject to more than 75 Percent of the maximum permissible stresses and welds so staggered that at any one section, not more than 20 percent of the bars are welded.

1606.2.5 Specimens of welded pieces of reinforcement taken from the site, shall be tested. The number and frequency of tests shall be as directed by the Engineer.

1606.3 Mechanical Couplers and Anchorages

1606.3.1 Mechanical Couplers

Bars may be joined with approved patented mechanical devices as indicated on the drawing or as approved by the Engineer e.g. by special grade steel sleeves swaged on to bars in end to end contact or by screwed couplers. In case such devices are permitted by the Engineer, they shall develop at least 125 percent of the characteristic strength of the reinforcement bar.

1606.3.2 Anchorages

Bars may be anchored with approved patented mechanical anchorages as indicated on the drawing or as approved by the Engineer. The anchorages shall be connected to the reinforcing bar by the use of taper thread system. The anchorage shall be capable of developing the characteristic strength of reinforcement without damage to concrete and shall have sufficient diameter and width to develop adequate shear cone strength. The connection shall develop 125% of the characteristic strength of reinforcement bar.

1607 TESTING ACCEPTANCE

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The material shall be tested in accordance with relevant IS specifications and necessary tests certificates shall be furnished Additional tests if required, will be got carried out by the contractor at his own cost.

The supply, fabrication and placing of reinforcement shall be in accordance with these Specifications and shall be as checked and accepted by the Engineer. Manufacturer's test certificate regarding compliance with Indian Standards for each lot of steel, shall be obtained and submitted to the Engineer. If required by the Engineer, the Contractor shall carry out confirmatory tests in the presence of a person authorized by the Engineer. Cost of these tests shall be borne by the Contractor. The sampling and testing procedure shall be as laid down in IS:1786. If any test piece selected from a lot fails, no re-testing shall be done and the lot shall be rejected.

1608 MEASUREMENT FOR PAYMENT

Reinforcement shall be measured in length including hooks, if any, separately for different diameters as actually used in work, excluding overlaps. From the length so measured, the weight of reinforcement shall be calculated in tones on the basis of IS:1732. Wastage, overlaps, couplings, welded joints, spacer bars, chairs, stays, hangers and annealed steel wire or other methods for binding and placing, shall not be measured and cost of these items shall be deemed to be included in the rates for reinforcement.

1609 RATE

The contract unit rate for coated/uncoated reinforcement shall cover the cost of material, royalty, fabricating, transporting, storing, bending, placing, binding and fixing in position as shown on the drawings and as per these specification and as directed by the Engineer including all labour, equipment, supplies incidentals sampling, testing & supervision. The unit rate for coated reinforcement shall be deemed to also include cost of all material, labour, tools and plant, royalty, transportation and expertise required to carry out the coating work as well as sampling, testing and supervision, required or the work.

Specification for CEMENT (Revised Standard Specifications 2012 of PWD, GOM)

A.2. CEMENT

A.2.1. Cement - Cement shall conform to I.S. 269-* or I.S. 8112- ****. for Gr. 43 or Gr. 53 cement. The type of cement as to whether it shall be Ordinary Rapid Hardening or Low Heat shall be specified. When no type is specified, Ordinary Portland cement shall be used.

A.2.2. The weight of Ordinary Portland cement shall be taken as 144 kg per cum and Rapid Hardening Portland cement as 121 kg. per cu. m. The measurement of proportion of cement should normally be on the basis of weight and whole bags, each undisturbed and sealed 50 kg bag being considered equivalent to 35 litters in volume. When part bag is required, cement shall be taken by weight. When the basis of mix. is by volume, cement will be taken by weight, assuming 35 litters to be equal to 50 kg. Care should be taken to see that each bag contains full quantity of cement.

A.2.3. Tests - When tests are considered necessary, they shall be carried out as indicated in I.S 269-* or I.S. 8113: 1976, The contractor should ensure that the cement is of sound and required quality before using it.

A.2.4. Storage - Cement required for use shall be as fresh as possible and stored on planks raised 15 to 20 cm above the floor and stacked 30 cm away from the walls in suitable closed weather-proof buildings at the work site or at the selected approved site, in such a manner as

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to prevent deterioration by dampness or moist atmosphere or intrusion of foreign matter. Cement shall be stored in such a way as to allow the removal and use of cement in chronological order of receipt, i.e. first received being first used. Not more than 15 bags shall be stacked vertically in one pile and maximum width of the piles should not be more than 3 metres. Any cement that has deteriorated caked or which has been damaged shall not be used. Cement concerning which there is a doubt shall not be used pending testing and satisfactory results. Cement that is condemned shall be immediately removed from the work site. When temporarily stored in the open for use within 48 hours, it shall be kept on a platform of planks about 15cm to 20cm. above ground and covered with a tarpaulin. Ordinary cement stored for more than 2 months from the date of receipt from the factory shall be subjected to test and used only if found satisfactory. The cost of tests shall be borne by the agency responsible for the storage after 2 months from receipt. Different kinds or brands of cement or cement of the same brand from different mills should be stored in separate groups and should not be mixed during the use except when directed in writing by the Engineer. Cement shall be kept in a store under double locking arrangement so that it can be taken out or fresh stock admitted with the knowledge of supervising staff of the Department. A board indicating stock and daily transactions of cement shall be kept in each room of the cement store. Daily account of receipt and use of cement bags shall be maintained by the Contractor in the Performa approved by the Engineer. This shall be kept in the store for verification by the supervising Departmental staff. Copies of the records shall be supplied to the Engineer regularly.

A.2.5. Cement shall not be stored for unduly long periods. It should not be handled in such a way as to impair its strength or useful characteristics.

Specification for WATER (Revised Standard Specifications 2012 of PWD, GOM)

A.4. WATER

(a) Water for mixing cement/lime mortar or cement/lime concrete - Water for mixing cement/lime mortar or concrete shall not be salty or brackish and shall be clean, reasonably clear and free from objectionable quantities of silt and traces of oil, acid and injurious alkali, salts, organic matter and other deleterious material which will either weaken the mortar or concrete or cause efflorescence or attack the steel in R.C.C. Water shall be obtained from sources approved by the Engineer. Sources of water shall be maintained at such a depth and the water shall be withdrawn in such a manner as to exclude silt, mud, grass or other foreign materials. Containers for transport, storage and handling of water shall be clean. If required by the Engineer, it shall be tested by comparison with distilled water. Comparison shall be made by means of standard cement tests for soundness, time of setting and mortar strength as specified in I.S. 269-**. Any indication of unsoundness, change in time of setting by 30 minutes or more, or decrease of more than 10% in strength of mortar prepared with the water sample when compared with the results obtained with mortar prepared with distilled water shall be sufficient cause for rejection of water tested. Sea water shall not be used

Water fit for drinking will generally be found suitable for mixing cement/lime mortar or concrete.

(b) Water for curing cement/lime mortar or concrete - Water for curing mortar or concrete should not be too acidic or too alkaline. It should have a pH value ranging between 4.5 to 8.5. It shall be free of elements which significantly affect the hydration reaction or otherwise interfere with the hardening of mortar or concrete during curing or those which produce objectionable stains or other unsightly deposits on concrete or mortar surfaces. Hard and bitter water containing more than 100 ppm of sulphates shall not be used for curing purpose. Sea water and water containing over 3% of chloride salts should not be used for curing

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reinforced concrete works. Potable water will generally be found suitable for curing cement/lime mortar or concrete.

Specification for FINE AGGREGATE (Revised Standard Specifications 2012 of PWD, GOM)

A.5. FINE AGGREGATE

1959 = 1963=

A.5.1. General - All fine aggregate shall conform to I.S. 383- == and relevant portion of I.S. 515- = as directed by the Engineer.

A.5.2. Sand for use in concrete shall be natural sand or crushed stone screenings. Sand shall be clean, well graded, hard, strong, durable and gritty particles free from injurious amounts of dust, clay, kanker nodules, soft or flaky particles, shale, alkali, salts, organic matter, loam, mica or other deleterious substances and shall be approved by the Engineer.The maximum size of particles shall be limited to 5mrn. Where the best trap sand available in the region contains murum or laterite particles, such particles may be allowed up to 5%. Zeolite crystals may also be permitted up to 4%. If the fine aggregate contains more than 4% of clay, dust or silt shall be washed. When the quality of fine aggregate is doubtful, it shall be tested for clay, organic impurities and other deleterious substances as laid down in IS 383-=. It shall not contain deleterious materials in such quantity as to reduce the strength or durability of the mortar or concrete or to attack the reinforcement in the case reinforced concrete work. Sea sand shall not be used.

A.5.3. The fine aggregate for concrete shall be graded within limits given in table III or table IV in paragraph 5-2 of the I.S. 383-==. The fineness modulus may range between 2,6 to 3.6. If substitution of a certain quantity of stone screenings will improve the quality of concrete, the Engineer may allow it.

A.5.4. The fine aggregate for cement mortar for masonry and first coat of plaster should generally satisfy the following grading:-

I.S. Sieve Percentage by weight passing sieve

480 100

240 80 – 95

120 70 – 90

60 40 – 85

30 5-50

15 0-10

The fineness modulus shall not exceed 3.0

A.5.5. The fine aggregate for cement mortar for pointing and second coat of plaster may have the following grading:-

I.S. Sieve Percentage by weight passing sieve

480 100

240 100

120 75-100

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60 40 – 85

30 5-50

15 0-10 The fineness modulus shall not exceed 1.6. I.S. 1542-1960 shall generally apply for sand for plaster.

A.5.6. Gradation - The gradation of materials from any one source shall not vary in composition beyond the range of values that governs, in selecting source of supply. For determining the degree of uniformity, determination of fineness modulus shall be made upon representative samples furnished by the contractor from such sources as he proposes to use. Fine aggregate from any one source having a variation in fineness modulus greater than -20 to +20 from the average fineness modulus of the representative samples submitted by the contractor shall be rejected or may be accepted subject to such changes in the Proportion of aggregate as the Engineer may direct.

A.5.7. Storage - The fine aggregate should be stacked carefully on a clean, hard surface so that it will not get mixed up with deleterious foreign material. Sand shall not be stacked in high conical heaps so that segregation of heavier particles by sliding down may be prevented. It shall be placed in layers not thicker than those resulting from lorry loads dumped on the same plane.

A.5.8. Tests - The aggregate shall satisfy the tests referred to in I.S. 383--****. Samples of sand to be used for a particular item shall be got approved by the Engineer who shall keep it in his office for reference.

A.5.9. Royalty - The contractor shall be responsible for observing the laws, rules and regulations imposed under the Minor Minerals Act and such other laws and rules prescribed by Government Departments such as Forest and Revenue and by competent Local Authorities etc. Royalty payable for securing the material shall be paid by the contractor subject to general conditions of contract. Where rules permit refund of Royalty for use of the materials in Government work the Engineer will pass a certificate for the quantity so used. No royalty shall be charged when the material is allowed to be obtained from Departmental quarry.

Specification for COURSE AGGREGATE (Revised Standard Specifications 2012 of PWD, GOM)

A.6. COURSE AGGREGATE

A.6.1. Coarse aggregate shall consist of crushed or broken stone and be hard, strong, dense, durable, clean, of proper gradation and free from skin and coating likely to prevent proper adhesion of mortar the aggregate shall generally be cubical in shape and as far as possible flaky, elongated pieces shall be avoided. It shall generally comply with the provisions of I.S. 383-== and I.S. 515-=. Unless special stones of particular quarries are mentioned in the special provisions, aggregates shall be broken from the best trap/granite/ quartzite/gneiss stones in that order available in the region and approved by the Engineer. Stone shall have no deleterious reaction with cement. Shingle of the appropriate grading may be permitted to be substituted for some proportion of the metal without price adjustment if it is shown that thereby strength of concrete is increased and workability improved.

A.6.2. The maximum size of the aggregates may be up to 80mm. and well graded between the sizes 5mm to 80mm. in such proportions as to give maximum density to the concrete. The maximum size should be as large as possible within the above limit but should not exceed 1/4

14


of the minimum thickness of the member, provided however this size presents no difficulty in the case of R.C.C. to surround the reinforcement thoroughly and fill up the corners of the formwork satisfactorily. In the case of general concrete work, a maximum size of 40mm is used and in R.C.C. work a maximum size of 20mm will be found satisfactory; but it should be restricted to 6mm less than the minimum lateral clear distance between bars or 6mm less than the cover, whichever is smaller. The crushing strength of aggregate will be such as to allow the concrete in which it is used to built up the specified strength of the concrete.

A.6.3. Approximate range in grading of coarse aggregate may be as under -

PERCENTAGE OF COARSE AGGREGATE FRACTION

MAXIMUM SIZE AGGREGATE

NOMINAL RANGE

40mm to 80 mm

20 mm to 40 mm

5mm to 20 mm

10mm to 20 mm

5mm to 10 mm

(1) (2) (3) (4) (5) (6) (7)

20mm 100 55-67 33-45

40 mm 40-50 50-60 28-40 18--30

80 mm 20—36 16-36 35-44 10-30 13-29

Grading tests shall be taken in the beginning and at change of source or machinery or type of metal. Where required by the Engineer, tests indicated in I.S. 383= and I.S. 456-* shall be got carried out in an approved laboratory at the contractor's cost to show the acceptability of the material.

A.6.4. Coarse aggregate of a porous nature where absorption of water after 24 hours Immersion in water, is more than 5% by weight, shall not be used.

A.6.5. Limits of deleterious substances shall not exceed those prescribed in 2.3.1.1 and 2.3.1.2 of I.S. 515-=.

A.6.6.Storage- The aggregates of different sizes shall be stored separately and handled in such a manner as to prevent intermixing of different sizes of aggregates required separately for grading purposes. No foreign matter shall be allowed to be mixed up with aggregates. If covered with dust etc., they washed clean before use.

A.6.7. Royalty - The contractor shall be responsible for observing the laws, rules and regulations imposed under the Minor Minerals Act and such rules prescribed by Government Departments such as Forest and Revenue and by competent Local Authorities etc. Royalty payable in connection with securing the material shall be paid by the contractor subject to general conditions of contract. Where rules permit refund of Royalty for use of the materials in Government work the Engineer will pass a certificate for the quantity so used. The contractor shall be entirely responsible for operating existing quarries or opening new quarries including removal of over-burden and shall bear all costs pertaining to them. In the case of Departmental quarries, operations shall be carried out in such a way that their further usefulness is not affected. No royalty will be charged when the material is allowed to be obtained from the Departmental quarry. When the quarries are not owned by the Department, the contractor shall be responsible for securing the written consent of the land owners for opening new quarries or working old ones and for payment of all compensation, Royalty, etc. Samples of coarse aggregates required for the work shall be got approved by the Engineer

15


both regarding quality and grading and shall be kept in the Engineer's office. The coarse aggregate to be used shall conform to those samples.

A.6.8. Blasting - Blasting shall be carried out according to instructions laid down in specification No. B.2.

Fly Ash : The fly ash shall comply with the following chemical and physical requirements

Table 1 Chemical Requirements

Class N F C

Silicon dioxide (Sio2) plus aluminium oxide(Al2o3) plus iron oxide (Fe2O3)

70.0 70.0 50.0

sulfur trioxide (SO3), max,%

4.0 5.0 5.0

Moisture content, max,% 3.0 3.0 3.0 Loss on ignition, max,% 10.0 6.04 6.0 AThe use of class F pozzolan containing up to 12.0% loss on ignition may be approved by the user if either acceptable performance records or laboratory results are made available.

Class N F C

Fineness : Amount retained when wet-sieved on 45 un (No.325) sieve, max % strength activity index index :A

34 34 34

with Portland cement at 7days min, percent of control

75B 75B 75B

with Portland cement at 28days min, percent of control

75B 75B 75B

Water requirement with max, percent of control soundness:C

115 105 105

Autocave expansion or contraction, max, % Uniformity requirements: The density and fineness of individual samples shall not vary from the average established by the ten preceding tests, or by all preceding tests if the number is less than ten, by more than:

0.8 0.8 0.8

Density, max variation from average, % percent retained on 45-

5

5

5

16


um(no.325), max variation, percent points from average

5 5 5

Add for FIBRES specially treated for the use in M60 grade Concrete a) Poly Propylene as per mix design

Chemical and physical properties:

Absorption Nil Melt Point 3240F(1620C) Specific gravity 0.91 Ignition Point 11000F(5930C) Fiber Length* Graded Thermal

Conductivity Low

Electrical Conductivity

Low Alkali Resistance Alkali Proof

Acid & Salt Resistance

High

Item to include:

a) Selection of all the basic material for concrete.

b) Mix design preparation and approval to mix design.

c) Supply of all material site like sand, metal I, metal II, Fly flash, micro silica, water reducing agent, polypropylene fiber, curing compound, water for mixing with the required specification.

d) All cost of transportation of basis material.

e) All machinery, formwork, labour for formwork, placing of concrete, vibrator.

f) Transportation of Pavement quality cement concrete material at the site including cost of transit mixer, driver, cleaner, the cost of all labours.

g) All other items not covered above for construction of Pavement Quality Concrete road work as directed by Engineer In Charge.

17


ITEMWISE DETAILED SPECIFICATIONS

Item No.

Item Description Revised Standard Specifications 2012 of PWD, GOM / Specifications of Road and Bridge works, fifth revision 2013,

MoRT&H

Additional Specification if any

A General Items

1. Marking the proposed centreline of the road with desired geometric improvements, marking of curves, establishment of permanent G.T.S. benchmarks along the road at a distance of one km each on permanent nearby structures, establishing the right of way of the road with 150 mm dia. NP 2 class pipes filled with 1:2:4 concrete embedded in 1:2:4 concrete block of size 600 X 600 X 600 establishing the desired centreline levels on the nearby permanent structures and during the course execution of work taking reduced levels at various stages of the work and submission of field books for verification to the Engineer-in-charge etc. complete.

As per description of item and as directed by Engineer-in-charge

2. Dismantling carefully the existing structure of stone masonry in cement or lime mortar, including sorting out serviceable materials and stacking the dismantled materials within 50 m lead neatly as directed etc. complete.


3. Dismantling carefully the existing plain concrete, including stacking the materials neatly within 50 m lead as directed etc complete


18


Item No.


MoRT&H


4. Dismantling R.C.C. concrete work, including breaking concrete by chiselling, wedging etc including cutting the reinforcement, stacking the serviceable materials and the debris separately up to a distance of 50 m or spreading the debris as directed etc complete.


5. Dismantling of flexible pavements and disposal of dismantled materials up to a lead of 1000 metres, stacking serviceable and unserviceable materials separately by Mechanical means - Bituminous course.


6. Breaking and removing the existing cement concrete pavement to full width, depth including lean concrete, cutting dowel bars, breaking the removed cement concrete slab pieces into 50 to 80 mm size, spreading the layer, watering and consolidation with power roller etc complete.


7. Dismantling cement tiles or marble or Polished Shahabad floor or Dado or Paver Blocks without bed concrete including stacking the materials as directed with all the lifts and initial lead of 50mtr etc. complete.

Spec. No.: BdW.-8 Page No. 587 As directed by Engineer-in-charge

8. Dismantling Iron pipe railing having wooden R.C.C or cement concrete or iron posts and stacking the materials as directed etc. complete


19


Item No.


MoRT&H


9. Cutting down trees with girth of --- --- --- including trunks and branches and stacking the materials neatly within a lead of 50 m. as directed etc. complete. a) above 30 cm to 60 cm. b) above 60 cm to 90 cm. c) above 90 cm to 180 cm. d) above 180 cm to 270 cm. e) above 270 cm to 450 cm. f) above 450 cm .

Spec.No.:Rd-1/Page No.-349 As directed by Engineer-in-charge

B General Items

10. Clearing and grubbing road land including uprooting rank vegetation, grass, bushes, shrubs, sapling and trees of girth upto 300mm, removal of stumps of trees cut earlier and disposal of unserviceable material and staking of serviceable material to be used or auctioned, upto a lead of 100meters including removal and disposal of top organic soil not exceeding 150mm in thickness - By Mechanical Means - in area of light jungle

MoRT&H Clause no 201 As directed by Engineer-in-charge

11. Providing PVC/FRP barricades of average height 1.20m water fill able barricade on rent basis as per direction of engineer in charge …etc. complete


12. Providing /printing/fixing flax in four colour in wooden frame as directed by engineer in charge etc. complete


20


Item No.


MoRT&H


13. Excavation for roadway in soft strata such as earth soil of all sorts sand, gravel, or soft murum including dressing section to the required grade, camber and side slope and conveying the excavated materials with all lifts upto a lead of 50m and spreading for embankment or stacking, disposing as directed

Spec.no.:Rd.2/Page no.-351 As directed by Engineer-in-charge

14. Excavation for roadway in hard strata such as soft rock is including dressing section to the required grade, camber and side slope and conveying the excavated materials with all lifts upto a lead of 50m.and spreading for embankment or stacking, disposing as directed.

Spec.no.:Rd.5/Page no.-355 As directed by Engineer-in-charge

15. Dewatering using 5 to 9 H.P. pumps for all drain C.D. and road construction work including diversion of stream, providing coffer dam bund etc. as directed etc. complete

Spec.no.:BR.4/Page no.-114 As directed by Engineer-in-charge

16. Transportation of excavated material upto 3km lead including loading and unloading etc. complete

As directed by Engineer-in-charge

17. Providing earth work in embankment with approved materials obtained from private land including all lifts and 50 m lead, laying in layers of 20 to 30cm thickness, breaking clods, dressing to the required lines, curves, grade & section, watering and compaction to 95% of standard proctor density with vibratory roller etc. complete

Spec. no.:Rd.13 Page no.-366 As directed by Engineer-in-charge

21


Item No.


MoRT&H


18. Providing and laying wedge shear element layer (WSEL) 15 cm to 23 cm trap stone and filing void with kapchi/metal, supplying stone grit including spreading kapchi & stone grit compacting with vibratory roller including lead, royalty , cess and insurance etc., complete

As per detailed specification and as directed by Engineer-in-charge

19. Providing and laying, spreading and compacting graded stone aggregate to Wet Mix Macadam (WMM) specifications including premixing the material with water to OMC in mechanical mix plant, carriage of mixed material by tipper to site, laying in uniform layers with paver in sub base /base course on a well prepared surface and compacting with vibratory roller to achieve the desired density including lighting, guarding, barricading and maintenance of diversion with etc. complete


20. Providing and applying tack coat with bitumen 60/70 grade at the rate of 3.5Kg/10Sqm on the black topped surface, cleaned with mechanical broom


22


Item No.


MoRT&H


21. Providing and laying 75 milimeter thick bituminous Bond Macadam road surface on W.B.M surface including picking the existing surface with static roller supplying all materials, preparing the existing road surface, spreading 40mm stone metal layer, heating and spraying bitumen, spreading 12mm size chips, compacting with power roller / vibratory roller etc., complete (Using 60/70 grade bitumen)


22. Providing and laying hot mix hot laid dense bituminous macadam 50/75mm compacted thickness with 4.25% bitumen content by weight of total mix on prepared surface with specified graded crusher aggregates for the base / binding course including loading of aggregates with F.E. loader, heating of stone aggregates and bitumen and mixing in modern drum mix type of hot mix plant transporting the hot mix to work site laying the mixed material with sensor paver finisher to the required grade, level and camber, rolling by power roller and vibratory roller to achieve the desired density. (Grade of Bitumen should be 60/70 )


23


Item No.


MoRT&H


23. Providing and laying bituminous concrete with 100-120 TPH batch type hot mix plant producing an average output of 75 tonnes per hour using crushed aggregates of specified grading premixed with bituminous binder @ 5.4% to 5.6% of mix and filler, transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MORTH specification clause No 509 complete in al respect.( Bitumen in bulk -60/70 -VG -30)


24. Providing and laying in situ Dry Lean Concrete sub - base of trap metal of specified gradation using mixing as per approved design mix, compacting with vibratory roller of minimum 80-100 KN static weight to give desired compacted density, providing constructions joints and curing with liquid curing compound and sprinkling water and covering with moist hessian or ponding of water for 7 days including all materials, labour, machinery with all leads and lifts, bailing out water manually and formwork etc. complete


24


Item No.


MoRT&H


25. Providing and laying Pavement Quality Concrete of M 40 grade (cast in situ) of trap metal including providing 125 micron thick impermeable plastic sheet membrane over the surface to be covered, coarse and fine aggregates of specified gradation using minimum cement content 350 kg/cum, approved admixture, mixing as per the design mix to the specified workability, providing necessary side farms, rails and guide wires, transporting the mix with transit mixers and laying and spreading within fixed form by mechanical auger and compacting with plate vibrator and minimum ten needle vibrators, curing with approved resin based aluminised reflective curing compound and covering with moist hessian or ponding and sprinkling of water for a minimum period of 14 days and including providing and fixing dowels, tie bars, cutting joints, joint-filler, sealants and all types of joints and finishing to the desired surface texture including all material, labour, machinery with all leads and lifts etc. complete. (without fly ash)

MoRTH Clause no 602 As directed by Engineer-in-charge

25


Item No.


MoRT&H


26. Providing and laying in situ cement concrete road pavement of M-25 grade (RMC), including supplying all materials, providing steel form work, compaction by plate vibrator, providing joints at every thirty meters internal and filling the joints with bitumen, curing etc. complete. Newly laid concrete shall be covered by gunny bag/tarpaulin etc. for curing period complete.


27. Providing dry trap rubble stone pitching 23cm thick as directed etc. complete.


28. Providing and laying cement concrete pipe of IS 458-1988 NP3 class pipes of 450 mm dia.2 nos for utility service duct @ 100m c/c crossing the road in proper line level & slope including providing fixing collars in cement mortar 1:2 etc. complete, including excavation, foundation bedding for pipe, encasing for pipe with M-20 Cement concrete, etc. complete.

Spec. no.:CD.5 Page no.-319 As directed by Engineer-in-charge

29. Providing and constructing RCC M-30 grade chamber of inner size 1400 mm x 1000 mm and 1400 mm in depth for utility service duct @ 100m c/c including 20 cm thick rubble soling, M-15 grade cement concrete foundation bedding , RCC M-30 grade for chamber raft, side wall, centering, formwork, vibrating & compaction, curing etc. complete ( RMC)


26


Item No.


MoRT&H


30. Providing and laying of hot applied thermoplastic compound 2.5mm thick yellow/white including reflectorising glass beads @250gms per sqm area, thickness of 2.5mm is exclusive of surface applied glass beads as per IRC:35.The finished surface to be level, uniform and free from streaks and holes etc. complete (with 3 years guarantee)


31. Providing and fixing cautionary sign boards of 90 cm equilateral triangle made up of 3.00mm thick aluminium composite panel sheet of ALSTONE/ALUCOPRO/ALUBOND or equivalent make fixed on MS angle frame of 35X35x5mm painted with priming coat of Zinc chromate and two coat of approved enamel paint the reflective sheeting should be of type XI of ASTM D 4956-09 standards per IRC 67-2012 should have reflection on its entire surface .The whole assembly should be fixed with nut ,bolt and U clamp (25X5 mm) on street light/signal pole at an a average height of 3.65 m with material labour machinery etc complete.

IRC 67-2012 As directed by Engineer-in-charge

27


Item No.


MoRT&H


32. Providing and fixing informatory sign boards of size 0.70x1.00m made up of 3.00mm thick aluminium composite panel sheet of ALSTONE/ALUCOPRO/ALUBOND or equivalent make fixed on MS angle frame of 35X35x5mm painted with priming coat of Zinc chromate and two coat of approved enamel paint the reflective sheeting should be of type XI of ASTM D 4956-09 standards per IRC 67-2012 should have reflection on its entire surface .The whole assembly should be fixed with nut ,bolt and U clamp (25X5 mm) on street light/signal pole at an a average height of 3.65 m with material labour machinery etc complete.


32A. Providing and fixing informatory sign boards of size 0.75x0.60m made up of 3.00mm thick aluminium composite panel sheet of ALSTONE/ALUCOPRO/ALUBOND or equivalent make fixed on MS angle frame of 35X35x5mm painted with priming coat of Zinc chromate and two coat of approved enamel paint the reflective sheeting should be of type XI of ASTM D 4956-09 standards per IRC 67-2012 should have reflection on its entire surface .The whole assembly should be fixed with nut ,bolt and U clamp (25X5 mm) on street light/signal pole at an a average height of 3.65 m with material labour machinery etc complete.


28


Item No.


MoRT&H


33. Providing and fixing combined prohibitory sign boards of 60cmX60cm made up of 3.00mm thick aluminum composite panel sheet of ALSTONE/ALUCOPRO/ALUBOND or equivalent make fixed on MS angle frame of 35X35x5mm painted with priming coat of Zinc chromate and two coat of approved enamel paint the reflective sheeting should be of type XI of ASTM D 4956-09 standards per IRC 67-2012 should have reflection on its entire surface. The whole assembly should be fixed with nut, bolt and U clamp (25X5 mm) on street light/signal pole at an a average height of 3.65 m with material labour machinery etc complete.


34. Providing necessary personnel's to control traffic including required instruments and necessary liaison with traffic police during total period of execution of project.


C R.C.C. drain / Service Duct

35. Excavation for foundation in earth, soils of all types, sand gravel including shoring and strutting as necessary and disposing off excavated stuff excluding dewatering if separately provided as directed etc. complete. (for depth upto 1.5m)

Spec. no.:BR.3 Page no.-113 As directed by Engineer-in-charge

36. Excavation for foundation in hard murum including shoring and strutting as necessary and disposing off excavated stuff excluding dewatering if separately provided as directed etc. complete.( for depth upto 1.5m)


29


Item No.


MoRT&H


37. Excavation for foundation/pipe trenches in ash muddy/ marshy/ slushy/soil including use of poclain, labour for dewatering during execution including removing the excavated material upto a distance of 50 m & lifts as below, stacking & spreading as directed, etc complete.


38. Providing dry trap rubble soling 15 cm to 20 cm thick including hand packing and compacting etc complete.

Spec. no.:Bd.A.12 Page no.-19 As directed by Engineer-in-charge

39. Providing and laying in situ cement concrete in proportion M15 of trap metal for foundation & bedding including bailing out water manually, formwork, compaction & curing etc. complete.

Spec. no.:Bd.E.1 Page no.-69 Spec. no.:B.6 Page no.-49


40. Providing and casting in situ cement concrete M-30( RMC) of trap metal for RCC work like raft, grillage, strip, foundations and footing of RCC Columns and steel stanchions, including bailing out water manually, centering, formwork, compacting, finishing and curing etc. complete. (Excluding reinforcement)

Spec. no.:Bd.F.3 Page no.-89 Spec. no.:B.6 Page no.-49


41. Providing & laying in situ RCC including form work Using with concrete Mix of M30 Grade, Span length less than 30.00 mtr of trap/granite/quartzite/gniess metal for R.C.C work like dirt /ballast walls, kerbs, box returns etc complete including scaffolding, centering formwork, compaction, finishing and curing etc. complete (Excluding reinforcement)

Spec. no.:BR.38 Page no.-149


30


Item No.


MoRT&H


42. Providing and casting in situ cement concrete M-30(RMC) of trap metal for R.C.C Slabs and landings of all thickness as per detailed drawings and designs, including centering, formwork, compacting, roughening the surface if special finish is to be provided and curing etc. complete. (Excluding Reinforcement)

Spec. no.:Bd.F.8 Page no.-93 Spec. no.:B.6 Page no.-49


43. Providing and cutting, bending, hooking, laying in position and tying TMT bars for reinforcement as per detailed drawings for R.C.C. work.

Spec.No.Bd.F.17 Page no. 98 Spec.No.BR.37 Page no. 149 MoRT&H Clause no 1600


44. Providing and applying anticorrosive treatment for MS and TOR steel reinforcement as per cement polymer composite coating (CPCC) method developed by CECRI including cleaning the bar by means of any established mechanical or manual method for removing the rust and deletious matter, applying rapid setting primer and cement polymer sealing coat of approved and licensed by CECRI including redoing the process if damaged occur during handling, stacking etc, complete.


45. Providing and laying weep holes of 100 mm diameter PVC pipes as per drawing for abutment return walls etc. complete.

MoRT&H Clause no 2200 & 2700 As per description of item and as directed by Engineer-in-charge

31


Item No.


MoRT&H


46. Dewatering on BHP basis by using water pump of 5 to 9 Horse power pump including diversion of streams, providing earthen bunds coffer dam etc. complete as may be necessary for foundation and other parts of the work and bailing out and pumping out water, during and after excavation as required. (The item includes dewatering for excavation upto foundation level, filling foundation and sub structure masonry above water level)

Spec.no.:BR.4 Page no.-114 As directed by Engineer-in-charge

47. Providing and fixing 0.90X0.90 (Frame Size-1017m X 1017m). Double cover composites Resin manhole frame with cover (for footpath), with top coat of decorative granite finish of approved color, confirming to relevant grade designation : LD-2.5 as per IS: 1726:1991 with stainless steel wire rope looking arrangement etc., complete, as specified & as directed. (inspection shall be as per guidelines of IS specifications)


D Footpath

48. Providing & fixing kerb stones M20 grade of size 30 cm to 40 cm long, 15cm wide, 38cm deep medium dressed in all exposed surfaces, set in cement mortar 1:2 on a 15cm thick & 25cm wide M-100 (1:3:6) C. C. bed including filling the joints with 1:2 C. M. pointing, curing, painting, etc. complete.


32


Item No.


MoRT&H


49. Providing and fixing precast water table size 50 cm X30cm X 10cm including 100 mm thick PCC M-10 grade, 150mm thick rubble soling etc. complete.


50. Filling in Plinth and floors with contractor's murum in 15cm to 20cm layers including watering, compaction etc., complete.

Spec.No.Bd.A.11 Page no.-18 As directed by Engineer-in-charge

51. Providing soling using 80mm size trap metal in layers of 15cm each including filling voids with sand, ramming, watering etc complete.

Spec.No.Bd.A.14 Page no.-20 As directed by Engineer-in-charge

52. Providing and laying in situ cement concrete M-20 of trap metal for foundation and bedding, including bailing out water manually, formwork, compacting and curing, etc. complete.

Spec. no.:Bd.E.1 Page no.-69 Spec. no.:B.6 Page no.-49


53. Providing un coursed rubble masonry of trap stones in cement mortar 1:6 in foundation and plinth of inner wall, including bailing out water manually, skirting joints on unexposed faces and watering etc. complete.

Spec. no.:Bd.H.1 Page no.-293 As directed by Engineer-in-charge

54. Providing flush grooved pointing with cement mortar 1:3 to stone masonry including scaffolding and curing etc. complete.

Spec. no.:Bd.L.15 Page no.-371 As directed by Engineer-in-charge

33


Item No.


MoRT&H


55. Providing and laying concrete pipe of I.S.NP2 class of 225mm dia.in proper line, level and slope including, necessary collars, testing, excavation, laying, fixing with collars in cement mortar 1:1 and refilling the trench etc. complete.

Spec. no.:Bd.V.41 Page no.-624 As directed by Engineer-in-charge

56. Providing, laying and fixing PVC pipes of 75 mm dia. with necessary fittings including necessary excavation refilling the trenches etc. complete.


57. Providing and constructing RCC M-30 grade (RMC) chamber of inner size 600 mm x 450 mm and 800 mm in depth for water collection chamber @ 15m c/c including 20 cm thick rubble soling, M-15 grade cement concrete foundation bedding , RCC M-30 grade for chamber raft, side wall, centering, formwork, vibrating & compaction, curing, including FRP grating, etc. complete.


E Box Culvert

58. Excavation for foundation in hard murum including shoring and strutting as necessary and disposing off excavated stuff as directed etc. excluding dewatering if separately provided, as directed etc. complete


59. Providing rubble filling of trap / granite/quartzite gneiss stones of approved quality in foundation including hand packing filling gravel of sand in the voids etc. complete.


34


Item No.


MoRT&H


60. Providing and laying in situ cement concrete of M-15 proporation with trap metal in foundation including necessary compacting and curing etc complete.(including formwork)

Spec. no.:BR.5 Page no.-116 Spec. no.:B.6 Page no.-49


61. Providing and fixing pressure relief pipes of 100 mm diameter of AC/PVC as per drawing for R.C.C Raft, galaries etc complete.


62. Providing and laying in situ M-30 grade controlled reinforced cement concrete of trap metal for raft slab including "V" haunches, formwork, scaffolding, compaction by vibrating, finishing curing etc. complete. Using Batching plant, transit mixer and concrete pump. (RMC) (Excluding reinforcement)

Spec. no.:BR.5 Page no.-116 MoRT&H Clause no 1500, 1700, 2100


63. Providing & laying in situ RCC M-30 Cement Concrete of trap/granite/quartzite/ gneiss metal for cast in situ R.C.C. wall etc. including provision of "V" shaped false joints to form suitable panels on the faces to approve design with compacting by vibrating and curing complete, including form work centering including dewatering by means of pump and including bailing out water and curing etc. complete. (Excluding reinforcement) Using Batching plant, transit mixer and concrete pump.( RMC)

Spec. no.:BR.24 Page no.-137 MoRT&H Clause no 1500, 1700, 2200


35


Item No.


MoRT&H


64. Providing and laying in situ Using Batching plant, transit mixer and concrete pump.( RMC) RCC M-30 of trap metal for R.C.C. work in solid slab, T beam & slab / Box girder and balanced cantilever, including centering, formwork, scaffolding, ramming, vibrating finishing in cement plaster and curing etc. complete. (excluding reinforcement)

Spec. no.:BR.31 Page no.-142 MoRT&H Clause no 1500, 1600, 1700, 2300


65. Providing and laying in situ RMC reinforcement cement concrete M-30 grade of trap/granite/quartzite/gneiss metal for R.C.C work in Anti Crash Barrier at 0.40 cum per Rmt including centering, formwork, scaffolding, ramming, vibrating, finishing in cement plaster and curing etc. complete (excluding reinforcement).

Spec.No.BR.39 Page no. 150 As per description of item and as directed by Engineer-in-charge

66. Providing and cutting, bending, hooking, laying in position and tying TMT bars for reinforcement as per detailed drawings for R.C.C. work.

Spec.No.BR. 28, 37 Page no. 141, 149 & MoRT&H Clause no 1600


36


Item No.


MoRT&H


67. Providing and applying anticorrosive treatment for MS and TOR steel reinforcement as per cement polymer composite coating (CPCC) method developed by CECRI including cleaning the bar by means of any established mechanical or manual method for removing the rust and deletious matter, applying rapid setting primer and cement polymer sealing coat of approved and licensed by CECRI including redoing the process if damaged occur during handling, stacking etc, complete as directed by the Engineer in charge.


68. Providing and laying weep holes of 100mm diameter AC pipes as per drawing for abutment returns, return wall etc., complete.

As per description of item & as directed by Engineer-in-charge

69. Dewatering on BHP basis by using water pump of 5 to 9 Horse power pump including diversion of streams, providing earthen bunds coffer dam etc. complete as may be necessary for foundation and other parts of the work and bailing out and pumping out water, during and after excavation as required. (The item includes dewatering for excavation upto foundation level, filling foundation and sub structure masonry above water level). (Prior approval of S.E.is necessary ) Spec. No.BR-4, Page No. 104-105

Spec.no.:BR.4 Page no.-114 As directed by Engineer-in-charge

37


Item No.


MoRT&H


70. Providing and laying apron with trap / boulder etc. complete as per the drawings and technical specifications

MoRT&H Clause 2503 As directed by Engineer-in-charge

71. Providing and applying approved quality coal tar epoxy paint in three coats of well, pier abutment (all concrete surfaces) including cleaning surface, scaffolding etc. complete.

MoRT&H Clause 1600 As directed by Engineer-in-charge

F Miscellaneous works

72. Providing, supplying and fixing Precast parabolic central divider of M-20 grade and applying 2 coats of flat oil paint etc. complete.


73. Filling in plinth and floor with contractor’s murum in 15 cm to 20cm layers including watering, compaction etc., complete.

Spec.No.:Bd.A.11 Page no.-18 As directed by Engineer-in-charge

74. Providing and laying cement concrete pipe of IS 458-1988 NP3 class pipes of 300 mm dia. along the road in verge portion for utility services in proper line level & slope including providing fixing collars in cement mortar 1:2 etc. complete.

Spec. No.:CD.5 Page no.-319 As directed by Engineer-in-charge

75. Providing and constructing RCC M-30 grade chamber of inner size 600 mm x 600 mm and 600 mm in depth for utility service duct @ 20m c/c including 20 cm thick rubble soling, M-15 grade cement concrete foundation bedding, RCC M-30 grade for chamber raft, side wall, centering, formwork, vibrating & compaction, curing etc. complete ( RMC)


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Item No.


MoRT&H


76. Preparing Shrubbery:- Excavating the ground to required depth of 30cms removing and conveying unwanted stuff to a required distance as directed, filling fresh garden soil & Manure in excavated area in 3:1 proportion to a height of 30cms.Mixing garden soil & manure thoroughly well, levelling, watering on previous night, planting well rooted shrubs 0.5 meters apart as directed and maintaining till well established by watering, weeding, stirring, replacing casualties etc. complete.


77. Preparing Edging or Border:- Excavating the ground to a required depth of 20cms;in the required area; removing and conveying unwanted stuff, rubbish to the required distance as directed, filling the excavated part with fresh soil and manure in 3:1 proportion to a required height to 20 cms mixing, levelling, watering the same, planting unrooted cutting at distance of 15cms apart watering and maintaining till well grown to the stage of prunning.


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Item No.


MoRT&H


78. Preparing Lawn :- Excavating the ground to a required depth of 30cms.removing & conveying unwanted stuff to a required distance as directed, filling fresh garden soil & manure in 3:1 proportion to a height of 30cms mixing garden soil and manure thoroughly, well, levelling, watering on previous night, planting required variety of lawn grass as directed and maintaining till well established by watering, weeding, clipping, rolling etc. complete.


79. Providing and laying in trenches Medium type 15mm dia of approved Galvanised iron pipe having embossed at every meter the ISI mark and name of manufacture, having 21.32mm outer diameter and 1.27 kg/Rmt weight with screwed sockets, joints and necessary galvanised iron fitting such as backnuts, elbows, bends, tees, reducers, enlargers, plugs, etc. including providing and applying two coats of oil paint with one coat of primer and necessary excavation and backfilling complete including removing existing pipe if necessary & conveying & stacking in PWD chowky or as directed etc. complete.

Spec.No.:Bd.V.5 Page no.-587 As directed by Engineer-in-charge

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Item No.


MoRT&H


80. Providing and laying in trenches heavy type 50mm dia of approved Galvanised iron pipe having embossed at every meter the ISI mark and name of manufacture, having 60.30mm outer diameter and 6.329 kg/Rmt weight with screwed sockets, joints and necessary galvanised iron fitting such as backnuts, elbows, bends, tees, reducers, enlargers, plugs, etc. including providing and applying two coats of oil paint with one coat of primer and necessary excavation and backfilling complete including removing existing pipe if necessary & conveying & stacking in PWD chowky or as directed etc. complete.


81. Providing and fixing 15mm dia. Screw down wheeled stop tap of steel with chromium plating of approved quality and make bearing I.S.I. mark, including sockets, union nut, complete.


82. Bus Shelters As per detailed specification and as directed by Engineer-in-charge

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Item No.


MoRT&H


83. Providing, fabricating and fixing Stainless steel railing of 14 gauge, 304 grade stainless steel having minimum nickel content of 10% ( laboratory testing material shall be provided for used material), 50mm dia. pipe vertical members and 32mm dia. horizontal members, stainless steel sphere of 75 mm dia. affixed to the vertical member, steel cap of 50mm.dia.size placed below the sphere in stepped design, base cap of 150mm.size,main support embedded to 150mm depth in masonry work and mild steel base plate of size 150mmx150mmx4mm thick with 4 nos of foundation bolts including concrete chair of 230mm x230mm x300mm depth, including removal of surplus material/debris and restoration of damaged portion of island etc. complete as directed.


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DETAILED SPECIFICATION

Item No.18 :

Providing and laying wedge shear element layer (WSEL) 15 cm to 23 cm trap stone and filing void with kapchi/metal, supplying stone grit including spreading kapchi & stone grit compacting with vibratory roller including lead, royalty , cess and insurance etc., complete.

Specifications:

Providing and laying wedge shear elemental layer (WSEL) by using rubble stone of size 15 to 20 cm thick in single layer of 230 mm including packing the same with 20 mm to 40 mm thick aggregates (normal size) and using stone powder of 40 mm to 50 mm thick on surface and watering & compacting by vibratory roller confirming layer thickness of minimum 200 mm and as directed by Engineer - in - charge etc complete.

The broken rubble (Hard basalt) stones shall be generally of the same specification as per soling stones provided in of size 15cm to 20cm size laid flat. Above the soling stones to ensure the purpose of wedge shear effect is realized, quarry stone mate.

Refer detailed specifications of the stone. The layer shall be compacted with 10 tone vibratory roller.

Mode of Measurement & Payment: The item will be measured in cubic meter & paid accordingly.

Item No.48 :

Providing & fixing kerb stones M20 grade of size 30 cm to 40 cm long, 15cm wide, 38cm deep medium dressed in all exposed surfaces, set in cement mortar 1:2 on a 15cm thick & 25cm wide M-100 (1:3:6) C. C. bed including filling the joints with 1:2 C. M. pointing, curing, painting, etc. complete.

Specifications: Precast cement concrete Kerb Stones – Providing & fixing precast cement concrete kerb stones 30 cm to 40 cm long, 15cm wide, 38cm deep, set in cement mortar 1:2 on a 15cm thick & 25cm wide M-10 (1:3:6) C. C. bed including filling the joints with 1:2 C. M. pointing, curing, painting the exposed surface with one coat of white primer & two coats of approved flat oil paint as directed by Engineer etc. complete. Minimum grade of cement concrete for precast kerb stones should be M20.

This item shall be executed as per wording of item and according to specification no Bd.E.1, Bd.E.4 and Bd.O.7 except Bd.E.1.7, Bd.E.4.9 and Bd.O.7.3 of Revised Standard Specifications 2012, Volume II, Public Works Department, Government of Maharashtra (RED BOOK – VOL II – ROADS – 2012).

Mode of Measurement & Payment: The item will be measured in running meter & paid accordingly.

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Item No.72:

Providing, supplying and fixing precast parabolic central divider of M-20 grade and applying 2

coats of flat oil paint etc. complete.

Specifications:

a) Scope: This work covers providing & fixing pair of precast cement concrete parabolic dividers in part or full as necessary including necessary bedding and painting to exposed faces of precast divider in accordance with the specifications & details and as directed by Engineer. Compaction of base, providing of PCC M-15 in bedding, providing and fixing of precast M 20 grade cement concrete dividers, painting to the exposed surface of divider and other incidental works pertaining to complete this work.

b) Applicable Codes & Specifications: Specification for Road and Bridge works, Fifth revision April 2013 and applicable IRC codes except where specifically mentioned

c) Details : Cross section of the work & their broad details are given below-

1. Precast cement concrete Parabolic Divider – Providing & fixing pair of precast cement concrete parabolic divider as per size and shape shown in drawing, set in cement mortar 1:2 on a 15cm thick & 45/50 cm wide M15 C. C. bed including filling the joints with 1:2 C. M. pointing, curing, painting the exposed surface with one coat of white primer & two coats of approved flat oil paint as directed by Engineer etc. complete. Minimum grade of cement concrete for precast parabolic dividers should be M20.

This item shall be executed as per wording of item and according to specification no Bd.E.1, Bd.E.4 and Bd.O.7 except Bd.E.1.7, Bd.E.4.9 and Bd.O.7.3 of Revised

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Standard Specifications 2012, Volume II, Public Works Department, Government of Maharashtra (RED BOOK – VOL II – ROADS – 2012).

d) Mode of Measurement and Payment: The work carried out by contractor according to above mentioned details and specifications and will be measured jointly in running metre of pair of divider and recorded accordingly.

Item No. 82 :

Bus Shelter

Following preliminary details are given to understand the scope of work / type of structure. However contractor should execute the item as per detailed drawing issued during the execution of work.

• SIZE OF SHELTER 20’ X 7.5’ X 7’ (LHB) • Material Specifications

• Truss : SS 304 Plate 125mm x 75 mm x 8 mm thick

• Top Structure : 50 x 25 mm Pipe • Front Panel: 40 x 40 mm pipe Frame With 3 mm thick ACP Sheet

• Main Pillar : 4” dia x 2 mm thick SS Pipe with Middle Pipe support to pillar

• Top Roofing: Plain PVC sheet

• Seating : SS 18 SWG Plain sheet

• Foundation Plate : 400 x 400 x 16 mm thick with Fasteners

thane municipal corporation, thane · thane municipal corporation, thane general specifications...

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