specs venitilation

SPECIFICATION No. : EES/GEN/051.0 GENERAL DESCRIPTION

1. INTRODUCTION

The proposed ventilation system has been designed for basements of Ananda being developed by M/s Bestech Ltd.

The specifications to follow cover general requirements of design, preparation of detailed drawings, supply of material, manufacture, testing, inspection, packing, forwarding, transportation, transit insurance, delivery at site, installation, testing and commissioning at site and carrying out acceptance test of the equipment, materials and services as per enclosed documents.

2. SCOPE OF WORK

The scope shall include development of a total system and design of their sub-systems as per concepts and parameters given herein, providing engineering drawings and data for approval by Customer / Consultants.

This will consist of supply, installation, balancing, testing & commissioning of the following in conformity with the tender, General Terms & Conditions, Special Conditions, Specifications, Bill Of Quantities, attached drawings, drawings to be submitted by the Contractor and approved by the Consultant. The Contractor shall carry out the said work under the Contract in every respect in conformity with the Contract documents and with the directions of and to the satisfaction of the supervisor. The Contractor shall furnish all labour, materials and equipment (except those to be supplied by the owner) as listed under ‘schedule of quantities’ and specified otherwise, transportation etc., for supply, installation, testing and commissioning of complete Ventilation as described in specifications and shown on drawings. This also includes any material, equipment, work not specifically mentioned in the drawings / documents but which are necessary to make a complete installation. In general, the work to be performed under this Contract shall comprise of supply and installation of the following: -

a. Axial flow fansb. Sheet metal ducts for service rooms ventilationc. Supply and return / exhaust air grills/ louvers d. Packing and transportation from manufacturers’ works to site.e. Receipt, unloading and conservation of equipment at site. Transportation to erection site.f. Pre-assembly wherever required, erection of system. All tools, tackles and erection

equipment required shall be arranged by the contractor.g. Balancing, testing and commissioning of entire installation.h. Test reports, list of spares, as built drawings and O&M manuals for entire installationi. Cuttings holes, chases and the like through all type of non structural walls and finishing’s

for all service crossings including sealing, frame work, fire proofing, providing sleeves, cover plates, making good the structure and finishes to an approved standard.

j. Hoisting of equipment to required locations shall be in scope of Ventilation contractor.

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3. ITEMS REQUIRED FOR VENTILATION SYSTEM BUT NOT INCLUDED IN SCOPE AND TO BE ARRANGED THROUGH OTHER AGENCIES

3.1 Ventilation system shall be complete in all respects in conformity with requirements given in the tender with exception of following items, which shall be provided by other agencies. However, for these, the Contractor shall timely supply detailed drawings duly approved by the Consultant for the provisions to be kept and shall supervise that the provisions required are correctly kept.

3.2 Any kind of masonry and structural work e.g., making openings in roofs, slabs, walls for passage of ducting, Equipment rooms, foundations for equipment.

3.3 Air tight fire doors with minimum one hour fire rating for blower rooms’ room and other equipment rooms.

3.4 Fixing of wooden frames for Grills and Diffusers.

3.5 False ceiling and boxing to cover the ducts, wherever required.

CONSULTANT’S DRAWINGS

3.6 The same are as detailed in Appendix-2 are enclosed as a part of tender documents.

3.7 Spaces allocated for equipment and openings as shown in the drawings are fixed and no deviation will be allowed. The drawings indicate a feasible scheme based on spaces available and equipment may be rearranged in the spaces allocated subject to Consultant’s prior approval. These drawings are not meant to be working drawings which shall be prepared by contractor as required.

4. BASIS OF DESIGN

The basis of design and proposed scheme are detailed in Appendix-1.

5. ELECTRIC SUPPLY

415 10%, 3 phase, 50Hz AC electric power requirements for system will be as per details given in Appendix-2

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SPECIFICATION No.EES / PR.INFO /05

2.0 PROJECT INFORMATION - GENERAL SH 1 OF 1

1.OWNER M/S. BESTECH GROUP

2. ARCHITECTM/S. CHAPMAN TAYLOR

3. HVAC CONSULTANTSMEP BUILDESIGN H. NO. 5, Roshan Gardan – II,Kakrola Road NajafgarhNew [email protected]

4. WORKS VENTILATION SYSTEM OF BASEMENT AND SERVICE

5. PROJECT BESTECH PARK VIEW ANANDA SEC-81

6. LOCATION GURGAON

7. DISTRIBUTION VOLTAGE 415 V, 3 PHASE, 4 WIRE, 50 HZ AC

8. VARIATION IN ABOVE SUPPLIES VOLTAGE +/- 10%FREQUENCY +/- 5%COMBINED +/- 10%

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SPECIFICATION No.:EES / BID INST./053.0 SPECIFIC REQUIREMENTS /INSTRUCTIONS TO TENDERER

SPECIFIC REQUIREMENTS

1. In addition to information called for in Data Sheet 'A', the data/information called for below shall be specifically enclosed with the bid.

2. The tenderer shall specifically confirm that blowers as indicated in tender drawings are adequate for equipment offered by him.

3. Descriptive catalogues / leaflets for equipment with constructional and operational features

4. Performance curves / rating charts based on which equipment selection is made.

5. Receiving of material at site shall be done by the tenderer's representative. During installation, testing commissioning and carrying out acceptance test, atleast one engineer of the tenderer shall be available all the time at the site.

6. All tools, tackles and erection equipment required for installation and instruments required for the carrying out commissioning and acceptance tests shall be arranged by the tenderer.

7. The tenderer shall furnish a list of spare parts required for two years of smooth operation and indicated price of each item separately.

8. The tenderer shall quote the earliest possible completion period. Early completion period will be essence of the contract.

9. All instruments and gauges used for testing and inspection shall have valid calibration and the accuracy shall be traceable to national standards.

10. The motor ratings indicated in the Bid shall be final and the Vendor is not permitted to change this after award of contract. Motor ratings shall be atleast 15% more than the computed value at the designed duty point.

11. Vibration isolation, mounting/installation of structural frames for all equipments shall be in Vendors' scope of work.

12. Ignorance of site conditions shall not be accepted as basis for any claim for compensation. The submission of tender by the tenderer will be construed as evidence that such an examination was made and any later claims/disputes in regard to price quoted shall not be entertained or considered.

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INSTRUCTIONS TO TENDERER

1. The bidder shall furnish the prices and delivery of the equipment strictly as called for in this specification.

2. The quantities of ducting, grills, etc. given in "Schedule of Quantities" are indicative only and may vary. In case, there is any variation in the quantities of the items actually installed from the quoted quantities, the price of the same shall be adjusted based on the unit rates furnished by the Vendor.

3. The unit rates shall be valid both upward and downward variations in quantities.

4. The tenderer shall include suitable quantities of splitters, elbow vanes, canvas connections in ducting unit rates as a lumpsum. No separate unit rates shall be admissible for these items.

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SPECIFICATION No :EES / CODES / 014.0 CODES AND STANDARDS

1. All equipments, systems and works covered under this specification shall comply with all currently applicable statutes, regulations, standards and safety codes in the locality where the equipment will be installed. All equipment and systems comply in all respects with the requirements of latest editions of codes and standards as indicated in various sections.

2. Other National Standards established to be equivalent or superior to the codes and standards specified are also acceptable. The tenderer shall furnish English translation of all standards specified in this specification.

3. In the event of any conflict between codes and standards referred to in the specification and the requirements of this specification, the more stringent of this requirements shall govern.

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SPECIFICATION No.:EES / MAIN REQ /055.0 MAINTENANCE REQUIREMENT

1. In order to carry out preventive maintenance, it should be possible to readily disassemble, repair, reassemble the equipment in the shortest period and to attend to any defect by a minimum disassembly.

2. The tenderer shall furnish one complete set of any special maintenance tools required for normal maintenance of equipment.

3. The tenderer shall confirm that space shown for the equipment is adequate from point of view of access, easy maintenance and for day to day operation.

4. All system must have convenient maintenance characteristics including:-

a) Minimum disturbance to production during preventive maintenance

b) Easy access to replacement part which can be installed by personnal with minimum skill.

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SPECIFICATION No. :EES / SPL.COND /056.0 SPECIAL CONDITION OF CONTRACT

1. PRICES:

The prices to be quoted by the intending tenderer shall include the supply and installation, at the site, of all equipment, ancillary material and other items whatsoever required for carrying out the job to fulfill the intent and purposes as laid down in the specifications and/or the drawings.

The Tenderer’s price shall be deemed to include all nuts, bolts, shims, clamps, supports etc, as required for proper fixing and/or grouting of equipment, ancillary items etc. Whether specifically mentioned or not the Contractor shall also include, in his price, all taxes duties or other levies (viz. Excise duty, customs duty, sales tax, octroi, works contract tax etc.,) which are legally livable on the air-conditioning equipment and installation. Failure to include all livable taxes and duties will not entitle the Contractor to any extra claims from the employer. The Contractor’s rate shall remain firm and fixed during the execution of the Contract. However, the price shall be subject to adjustment, in case of statutory variation in the rate of any taxes or duties due to an act of legislature, within the originally agreed period, for the completion of the work.

2. ASSEMBLY AND INSPECTION:

Shop assembly of all parts shall be made to ensure that all parts are properly fitted to minimize erection problems.

The purchaser reserves the right to inspect any machinery, material and equipment (hereinafter collectively called “Apparatus”) finished or used by the Contractor under this Contract and may reject which is defective in workmanship or design or otherwise unsuitable for the use and purpose intended or which is not in accordance with the intent of this Contract. The Contractor shall on demand by the purchaser; remedy/replace at the Contractor’s expenses any such defective or unsuitable apparatus. The Contractor shall advise the purchaser in advance when apparatus is ready for inspection in the Contractor’s workshop and/or in his sub supplier’s workshop.

The purchase inspector shall at all times have access to all parts of shop where apparatus is being manufactured and also shall be provided with all reasonable inspection facilities by the Contractor and his sub supplier.

None of the apparatus to be furnished or used in connection with this Contract will be supplied until shop inspection and performance testing, wherever possible, satisfactory to the purchaser’s inspector has been made. Such shop inspection of the apparatus shall not however, relieve the Contractor from full responsibility for furnishing the apparatus Confirming to the requirements of this Contract not prejudice any claim, right or privilege which the purchaser may have because of the supply of defective or unsatisfactory apparatus. Should the purchaser waive the right to inspect any apparatus, such waiver shall not relieve the Contractor from his obligation under this Contract.

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3. WORKING DRAWINGS, MAINTENANCE MANUALS ETC :

On the award of the work, the Contractor shall immediately proceed with the preparation of detailed working drawings detailing the equipment that are to be installed and the ancillary works that are to be carried out. Three sets of all such working drawings shall be submitted to the engineer-in-charge, for his approval to ensure that the works will be carried out in accordance with the specifications and drawings, including such changes as may have been mutually agreed upon. All the drawings shall be received by the engineer-in-charge for his approval within three weeks of the award of work. The approval of the drawings by the engineer-in-charge shall in no way relieve the Contractor from his obligations to provide a complete and satisfactory plant and installation as per intent. Omissions and/or errors shall be made good or rectified whether or not the drawings are approved. Prior to the completion of the work the Contractor shall furnish (4) four sets of comprehensive manuals, describing all components, furnishing a list of instructions for the operations and maintenance of the plant.

The Contractor shall also fix in the plant room neatly typed and framed, instructions in detail, for the starting and running of the plant.

Any special tools required for the operation or the maintenance of the plant shall be supplied free with the plant.

4. ERECTION AND COMMISSIONING:

The Contractor shall carry out the complete erection and commissioning. All work shall commence on previously prepared foundation. All the materials shall be moved from their place of storage into the plant by the Contractor. The Contractor shall make his own arrangement to off load equipment/material received at respective rail/road transport terminal points, dispatched to site and to store all material received at site. The purchaser shall provide clear storage and erection space only. All erection programme shall be provided by the Contractor.

All consumables required for erection such as cotton waste, kerosene oil, emery paper, coil string, bamboos and planks for scaffolding etc as well as necessary welding rods, gases etc shall be provided by the Contractor. Protective and finish painting shall be carried out by the Contractor. Carbon steel surface shall be thoroughly cleaned before painting. The Contractor shall indicate the water and electricity requirements during erection. The Contractor shall remove all the waste material or rubbish from and about the work site and leave the job thoroughly cleaned up and ready to use

5. TESTING:

All types of routine tests shall be carried out at the works of the Contractor or the manufacturers of the components. The Engineer-in-Charge/Architect shall be free to witness any or all tests if he so desires.

On the completion of the installation, the Contractor shall arrange to carry out various initial tests as detailed below in the presence of and to the complete satisfaction of the engineer-in-charge, and their Architects or their representatives. Any defects or shortcomings found during the tests shall be speedily rectified or made good by the Contractor at his own expense.

The initial tests shall include but not be limited to the following:

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To operate and check the proper functioning of all electrically operated components viz., blowers, as well as other electrical motors.

To check the air distribution in the system and to provide design air flow in all areas specifically shown on the drawings by adjusting the grills, diffusers and dampers, which should be provided by the Contractor wherever required whether they are specifically shown on the drawings or not.

To check the system against leaks in different circuits, alignment of motor, ‘V’ belt adjustments.

Control setting and all such other tests which are essential for smooth functioning of the plant.

On the satisfactory completion of all ‘Initial’ tests, the plant shall be considered to be ‘Virtually Complete’ for the purpose of taking over by the employer.

The Contractor shall provide all necessary tools, instruments, gauges, flow meter ammeter etc. as may be required for conducting the various tests.

6. REJECTION OF DEFECTIVE PLANT :

If on test any portions of the plant, equipment or components are found to be defective or not fulfilling the intent or the meaning of the specifications, the same shall be replaced or repaired to the entire satisfaction of the engineer-in-charge, and their Architects.

In case the Contractor fails to remove the defects, within a period considered reasonable, the employer reserves the right to take necessary remedial measures through other agencies and all expenses thus incurred would be recovered from the Contractor.

The employer reserves the right to operate all the equipment and complete system whether or not the plant is taken over after the initial test and commissioning. Any defects found during the initial or running tests shall be removed at a suitable time as decided upon by the employer and/or their Architects.

7. COMPLETENESS OF THE PLANT :

The Contractor shall provide all the required materials, equipment, ancillary items etc, to install a complete and satisfactory plant and system capable of fulfilling the intent and purpose of the Contract whether or not each and every item is mentioned in the specifications and/or drawings. Any shortcomings notified at any stage shall be made good at no extra cost.

8. GUARANTEE :

The Contractor shall guarantee that all the material, machinery and components supplied, fabricated, designed and installed by him shall be free from defects due to faulty design material and/or workmanship, that the plant shall perform satisfactorily and the efficiency of the system and all the components shall not be less than the values laid down in the specifications and the capacities shall be with in + or – 3% of the specified values. In case of

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deviation greater than + or – 3%, the Contractor shall replace the necessary components at no extra cost or alternately the employer shall be entitled to deduct a proportionate amount from payments due to the Contractor.

The period of the guarantee shall be (12) twelve months from the date of commissioning, during which period any or all components found to be defective shall be replaced free of charge and any shortcomings found in the system as specified shall be removed at no extra cost. The Contractor shall provide the necessary personnel and tools for fulfilling the above guarantee.

If for any reason the commissioning cannot be carried out then the plant shall carry a guarantee for a period of (15) fifteen months from the date of completion of erection at site.

If the defects are not removed within a reasonable time the employer may arrange to do so at the Contractor’s risk and cost, without prejudice to any other’s rights.

9. PERFORMANCE GUARANTEE :

The Contractor shall guarantee that the capacity of various components as well as the whole system shall not be less than specified.

10. PAINTING

All equipment and ancillary items such as piping, supports etc., will be painted in approved manner, using colour scheme as approved by the Architect.

11. SAFE CUSTODY AND STORAGE :

Safe custody of all machinery and equipment supplied by the Contractor shall be his own responsibility till the final taking over by the employer. He should, therefore, employ sufficient staff for watch and ward at his own expenses. The employer may, however, allow the Contractor to use the Plant/AHU rooms, etc. for temporary storage of his equipment if such spaces are ready and available.

12. BYE-LAWS AND REGULATIONS :

The installation shall be in conformity with the Bye-laws, regulations and standards of the local authorities concerned, but if these specifications and drawings call for a higher standard of material and equipment than those required by above regulations and standards, then these specifications and drawings shall take precedence over said regulations & standards.

13. QUIET OPERATION AND VIBRATION ISOLATION :

All equipment shall operate under all conditions of load without any sound or vibration, which is objectionable in opinion of the supervisor. In case of rotating machinery, sound or vibration noticeable outside the room, if considered objectionable shall be corrected by Contractor at his own expense. All vibrating equipment located on terrace shall be mounted on steel structure and suitably vibration isolated.

Where manufacturer has furnished specific instructions, relating to the material and

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equipment used in this project, covering points not specifically mentioned in these documents, each instructions shall be followed in all cases.

14. TEST READINGS :

All the equipment shall be supplied by the contractor after testing and test readings shall be submitted.

15. BALANCING, TESTING AND COMMISSIONING:

Balancing of all air and water systems and all tests as called for the specifications shall be carried out by the contractor through a specialist ground, in accordance with the specifications and ASHRAE guide lines and standards. Performance test shall consist of three days of 10 hour each operation of system for each season.

The results shall be submitted for scrutiny. Four copies of the certified manufacturers performance curves for each piece of equipment, high lighting operational parameters for the project, shall be submitted along with the test certificates. Contractor shall also provide four copies of record of all safety and automatic control settings for the entire installation.

The installation shall be tested again after removal of defects and shall be commissioned only after approval by the owner's representative. All tests shall be carried out in the presence of the representatives of the architect/engineer.

16. MATERIALS AND EQUIPMENTS :

All material and equipments shall conform to the relevant Indian Standards and shall be of approved make and design. Makes shall be strictly in conformity with list of approved makes as per section 8.0.

17. MODES OF MEASUREMENTS :

The modes of measurements shall be as per IS.

18. CONTRACTOR’S CONFIRMATION :

The contractor shall confirm adherence to safety codes, design requirements & performance guarantee.

19. TECHNICAL INFORMATION TO ACCOMPANY BIDS :

Technical information of equipment shall be furnished along with the manufacturer’s catalogues.

20. VARIATION IN QUANTITIES :

The quantities of ducting, insulation, grills & diffusers given in the ‘schedule of quantities’ are indicative only and may vary as per the final approved drawings. In case there is any variation in the quantities of the items actually installed from the quoted quantities, the same

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shall be adjusted based on the units rates available in the contract. The rates shall remain firm till the completion of the project.

21. CLEARING :

Before commissioning of the plant, all mechanical equipment and ductwork shall be flushed / blown clear to ensure that they are thoroughly cleaned.

22. ACCESSIBILITY :

The contractor shall verify the sufficiency of size of all equipment rooms, shaft openings and clearances for proper installation of equipment and ducting/piping. The contractor shall locate all equipment, which must be serviced, operated or maintained in fully accessible positions.

23. INTERPRETATION IN CASE OF CONTRADICTION WITHIN CONTRACT DOCUMENT :

In case of any contradictions between general conditions of contract, technical specifications, special conditions, bill of quantities, consultant’s drawings or contractor’s drawings, the most stringent of the lot shall prevail and interpretation by owner in this regard shall be final.

24. COORDINATION WITH OTHER AGENCIES :

The contractor shall maintain close coordination with other connected agencies and offer maximum cooperation to ensure that the project can be smoothly completed in time.

25. TECHNICAL SUBMITTAL :

The contractor shall submit within 10 days from award of work & release of advance payment and obtain approval of the consultant of item-wise selection of equipment, design Calculations, duct sizes, pipe sizes and all distribution supported by calculations, tables/charts to the consultant’s satisfaction.

26. COMPLETION PERIOD:

The entire work is required to be completed in all respects including testing and commissioning within two months of award of letter of intent.

Timely completion will be the essence of the contract. Bidder shall furnish a Bar Chart indicating all the activities and showing their completion.

--------------------------------- --------------------------------------

ENGINEER-IN-CHARGE CONTRACTOR

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SPECIFICATION No. :EES / DESN.SCH /05

APPENDIX -1BASIS OF SYSTEM DESIGN

1. INTRODUCTION A ventilation and smoke exhaust system has been designed for the basements of proposed Group housing in sector 81 Gurgaon, Haryana .The building will include single basement at site C which are the parking spaces and house service areasThe system design, basis of design, estimated requirements and other relevant data are outlined in this section.

2. BASIS OF DESIGN

Location : Gurgaon

2.1 Ventilation

Normal : 10 air changes per hour for Basements Ventilation

Normal : 15 air changes per hour for Services AreaVentilation

Emergency : 30 air changes per hour Smoke exhaust

2.2 Lift well pressurization during fire emergency : Pressurized at 50 Pascal

2.3 Staircase (in core) and lift lobbies Pressurization during fire emergency : Stair are Pressurized at 50 & Lift

Lobby are at 25 Pascal

2.4 DG room : Fresh air and exhaust arrangement to suit DG set capacities(30cfm/kva).

2.5 Toilet : 10 Air changes per hour2.6 STP : 25 Air change per hour2.7 Tranformer Room : 15 Air change per hour 3.0 SYSTEM DESIGN

3.1 For Basements and services area mechanical exhaust and natural intake of Supply air have been considered.

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3.2 For emergency smoke exhaust axial flow fans have been considered which shall run in addition to the normal ventilation fans. The total smoke extraction air quantity is based on 30 air changes per hr as per national building code

4.0 Ventilation Calculation:-

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ZONE-1

I) Parking Area extended basement General 1878 3.4 10 37048 37048 2x20000 CFM AXIAL FAN CUT OUT

II) Parking Area extended basement Fire 1878 3.4 20 74096 74096 CUT OUT 2x40000 CFM AXIAL FAN

ZONE-2

I) Parking Area extended basement General 1203 3.4 10 23732

ii) Parking Area under the Tower General 625 4.6 10 16813

III) Parking Area extended basement Fire 1082 3.4 20 42690

iv) Parking Area under the Tower Fire 583 4.6 20 31367

ZONE-3


ii) Parking Area extended basement Fire 2154 3.4 20 84986 84986 CUT OUT 2x40000 CFM AXIAL FAN

ZONE-4


ii) Parking Area under tower General 952 4.6 10 25610


iv) Parking Area under tower Fire 952 4.6 20 51220

ZONE-5





ZONE-6


ii) Parking Area extended basement Fire 2056 3.4 20 81119 81119 CUT OUT 2x40000 CFM AXIAL FAN

ZONE-7





ZONE-8





ZONE-9





ZONE-10


ii) Parking Area under tower Fire 2632 3.4 20 103845 103845 CUT OUT 4x25000 CFM AXIAL FAN

SERVICES AREA SITE C SERVICE AREA

12 STP Exhaust 350 3.3 30 20382 20000 2x20000 cfm axial fan CUT OUT

40545

74057

42181 2X20000 CFM AXIAL FAN CUT OUT

84362

41433

82866

41042

82084

42522

84290

41141

82281

2X20000 CFM AXIAL FAN CUT OUT

CUT OUT 2X40000 CFM AXIAL FAN










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7.0 TECHNICAL SPECIFICATION

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SPECIFICATION No.: EES / AF /05

7.1 AXIAL FLOW FANS - SPECIFICATIONS

1. SCOPE

1.1 This section covers the technical requirements for manufacture, testing at works, delivery at site, testing after installation, commissioning of axial flow fan equipment for ventilation and exhaust system. Their location shall be as given in ‘Schedule of Quantities’ and drawings.

1.2 The fans shall be complete with all the accessories required for proper installation and performance consisting mainly of the following: -a. Suction and discharge side flanges and counter flanges suitably drilled, complete with

bolts & nuts.b. Direct driving electric motor.c. Suspension hangers (for ceiling hung fans only) for vibration isolation d. Any structural steel and hardware required for assembly, installation, supporting of fan or

accessories.e. 2 mm thick flexible connectors, fire resistant type at suction and discharge end.f. Foundation bolts and vibration isolators (in case of floor mounting only).g. Gravity louvers

2. APPLICABLE SPECIFICATIONS STANDARDS AND CODES.

2.1 Documents listed below should be read along with the technical data given in the ‘Schedule of Quantities’ and shall be applicable to the material, manufacture, testing and installation of axial flow fans and accessories.

(a) I.S.S. : 3588 – 1986; specifications for electric axial flow fans.

(b) ANSI/ASHRAE : standard 51

(c) ANSI/AMCA : standard 210 for preparing performance curves, charts and testing of fans

(d) IS-2312 – Propeller type A.C ventilation fans

(e) BS – 848 – Methods of performance test for fans

3. DESIGN & MANUFACTURING

3.1 FAN AND COMPONENTS

3.1.1 The fan shall be designed to handle the quantity of air against the static pressure and at conditions indicated in the technical data. The fan shall have optimum efficiency at operating conditions and shall have performance characteristics to match the approved performance curves.

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3.1.2 The unit shall be factory built to the highest standards to ensure rigidity, maximum mechanical and electrical reliability, quite stable and vibration free operation at the prescribed conditions of flow, static and speed.

3.1.3 The casing shall be fabricated from heavy gauge sheet steel with suction and discharge ends flanged and complete with counter flanges, G.I. nuts and bolts. The flanges and counter flanges shall be matched and drilled suitably to receive flexible PVC connections. An inspection door with handle and neoprene gaskets shall be provided. Support brackets for ceiling suspension shall be welded to the casing for connection to hanger bolts.

3.1.4 IMPELLER & BLADES

The impeller shall be cast aluminium, aerofoil type with well balanced blades made from cast aluminium alloy or cast steel construction.

3.1.5 DRIVE

The fan hub and blades shall be directly mounted on the shaft of a totally enclosed motor, rotor of fan motor shall be well balanced. The motor shall be TEFC, squirrel cage, IP 55 – class F and suitable for 415 10% V, 50 HZ 3 phase AC power supply. The motor shall be dual speed wherever called for in ‘Schedule of Quantities’. The maximum motor speed shall be limited to 1450 RPM. Motor conduit box shall be mounted on exterior of fan casing and lead wires from motor to conduit box shall be protected from air stream by enclosing in a flexible metal conduit.

3.1.6 SMOKE EXTRACTION FAN

The fan is required to satisfy the performance criteria specified in BS 7346: Part 2:1990 relating to structural performance, electrical performance and aerodynamic performance throughout the rated duration

4. TECHNICAL SPECIFICATIONS

4.1 The firm shall submit the technical data and performance characteristics with operating points duly marked for approval prior to fabrication. The test certificates of all the fans shall be supplied by the supplier.

5. GENERAL REQUIREMENTS.

5.1 Static, dynamic balancing and vibration: the individual fan impeller, blades, motor shall be static and dynamically balanced independently after assembly the entire fan motor units shall not give rise to any vibrations. The balancing shall be as per ISO : 1940 GR 6.3.

5.2 NOISE LEVEL: The tenderer shall indicate the noise level generated by the fan/motor unit in terms of decibel units to be measured at 3M from the unit. This shall fall in line with best engineering standard. All fans shall be selected for the lowest operating noise level not exceeding 75 DB from 3 meter. Capacity ratings, power consumption, with operating points clearly indicated, shall be submitted and verified at the time of testing and commissioning of the installation

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6. PAINTINGAll fans and their accessories shall be painted with suitable enamel paint after priming.The fans shall be dispatched in packed condition to avoid damage during transit insurance for the fans shall be included in this offer.

7. INSPECTION & TESTING.

7.1 All fans shall be subject to inspection and test requirements as given below. The contactor shall be responsible for providing all inspection facilities and for conducting all tests at works and at site after erection. Test certificates for all fans shall be submitted, some fans may be tested at the factory.

7.2 The performance of the fan motor unit shall be tested by operating at design conditions. The following parameters will be tested vis-à-vis the approved performance curves

a. Air flow capacity.b. Static head developedc. BHP requirementd. Vibration and noise level

8. INLINE EXHAUST FANS

Inline fan shall incorporate SSIW direct driven Centrifugal Fan with TEFC motor. The fan assembly shall be encased in a sheet metal housing of powder coated 22 gauge GSS and with necessary inspection cover with proper gasket assembly. The fan material shall be galvanized sheet steel. Flanges shall be provided on both sides of the Inline fan to facilitate easy connection. Flexible anti-vibration joints shall be provided to arrest vibration being communicated to other equipments connected to the Inline fan. Motor shall be single phase/three phase as per duty conditions. All single phase fans shall be provided with speed regulators while all three phase fans shall be provided with opposed blade damper in GSS construction at fan outlet for air balancing.

8. CO Sensor

The CO Sensor shall be microprocessor based device. The CO detector shall sense the level of carbon monoxide particle in the air of parking area and shall transmit the proportional signal to DDC controller for the control of ventilation / exhaust equipment and shall provide early warning of hazardous concentration of Carbon monoxide. The detector shall cover minimum range of 0 - 250 PPM for solid state and 0 – 500 PPM for electro chemical state.The detector shall have LCD displaying PPM level. The detector shall operate in the temperature range of 0 - 50 Deg.C and humidity range of 95 %.The detector shall be calibrated as per field conditions.The detector shall have 2 LEDs for normal and failure indication.Accuracy level in the range of +/- 1% to be maintained.Any voltage transformation required shall be part of scope.

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SPECIFICATION No.:EES / DUCTING /057.2 SHEET METAL WORKS AND ACCESSORIES - SPECIFICATIONS

1. SCOPE

1.1 The scope of this section includes supply, fabrication, installation & testing of all sheet metal ducts, supply, installation, testing & balancing of all grills & diffusers as per specifications & drawings.

1.2 Except as otherwise specified all ductwork and related items shall be in accordance with these specifications.

1.3 Duct work shall mean all ducts, casings, dampers, access doors, joints, stiffeners and hangers

2. DUCT MATERIALS

2.1 The ducts shall be fabricated from galvanized steel sheets class VIII - Light coating of Zinc conforming to ISS:277-1962 (REVISED) and with a galvanizing thickness of nominal 120 GM. per SQM surface area.

Only new, fresh, clean (unsoiled) and bright GI sheets/Aluminium shall be used. The Owner / Consultants reserve the right to reject-summarily sheets not meeting these requirements. Fabrication of ducts shall be through Lock formers.

2.2 All duct work, sheet metal fabrication unless otherwise directed, shall strictly meet requirements, as described in IS:655-1963 with Amendment-I (1971 Edition)

Longer size of Duct

Sheet ThicknessGI(MM)

Type of Joints Bracing

Upto 750 0.63 GI Flange -751-1000 0.80 25x25x3 mm angle iron frame with 8 mm

Dia nuts & bolts25X25X3 MM @ 1M

1001-1500 0.80 40x40x5 mm angle iron frame with 8 mm Dia nuts & bolts

40x40x5 MM @1M

1501-2250 1.00 50x50x5 mm angle iron frame with 10 mm Dia nuts & bolts at 125 mm center

40x40x3 mm @ 1.2m to be braced diagonally.

2251 & above

1.25 50x50x6 mm angle iron frame with 10 mm Dia nuts & bolts at 125 mm center

40x40x3 mm @ 1.6m diagonally braced

2.3 Ducts larger than 450 mm shall be cross broken, duct sections upto 1200 mm length may be used with bracing angles omitted.

2.4 Changes in section of ductwork shall be affected by tapering the ducts with as long a taper as possible. All branches shall be taken off at not more than 45 Deg. Angle from the axis of the main duct unless otherwise approved by the Engineer-in-Charge.

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2.5 All ducts shall be supported from the ceiling/slab by means of M.S. rods of 10 MM Dia with M.S. angle at the bottom of size 40 mm x 40 mm x 6 mm for sizes upto 1500 mm at 2.5 m intervals. Above size 1500 mm upto 2250, support shall be provided with 10 mm dia. MS rod and MS angle size 50 mm x 50 mm at bottom at 2.0 m intervals. Above size 2250 mm support shall be provided with 12 mm dia MS rod and MS angle size 50 mm x 50 mm at bottom at 1.5 m interval.

3. INSTALLATION

3.1.1. All ducts shall be fabricated and installed in workman like manner, generally conforming to relevant BIS codes. Round exposed ducts shall be die formed for achieving perfect circle configuration

3.1.2. Ducts so identified on the drawing shall be accoustically lined and as indicated in ‘Schedule of Quantities. Duct dimensions shown in drawings are overall sheet metal dimensions inclusive of the accoustic lining where required and indicated in ‘Schedule of Quantities’.

3.1.3. Ducts shall be straight and smooth on the inside with neatly finished joints. All joints shall be made air tight.

3.1.4. Ducts shall be fabricated as per details shown on drawings. All ducts shall be rigid and shall be adequately supported and braced where required with standing seams, tees of ample size to keep the ducts true to shape and to prevent buckling, vibration or breaking.

3.1.5. All sheets metal connections, partitions and plenums required to confine the flow of air to and through the filters and fans shall be constructed of 18 Gauge GSS thoroughly stiffened with 25mm x 25mm x 3mm angle iron braces and fitted with all necessary inspection doors as required to give access to all parts of the apparatus. Doors shall be not less than 45cm X 45cm in size.

3.1.6. Plenums shall be panel type and assembled at site. Fixing of MS angle iron flanges of duct pieces shall be with rivet heads inside i.e. Towards G.S. sheet and riveting shall be done from outside.

3.1.7. Rubber gasket 5 mm thick shall be used between duct flanges and between duct and duct supports instead of felt in all ducting installation for complete sealings. . For smoke extraction fans, the gaskets shall be suitable for continuous operation in an air stream temperature of 250 °C for not less than one hour

3.2.1. During the construction, the Contractor shall temporarily close duct openings with sheet metal covers to prevent debris entering ducts and to maintain opening straight and square, as per direction of Engineer-in-Charge.

3.2.2. Great care should be taken to ensure that the duct work does not extend outside and beyond height limits as noted on the drawings.

3.2.3. All duct work shall be of high quality approved galvanized sheet steel guaranteed not to crack or peel on bending or fabrication of ducts. All joints shall be tight and shall be made in the direction of air flow.

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The ducts shall be re-inforced where necessary, and must be secured in place so as to avoid vibration of the duct on its support.

3.2.4. All air turns of 45 degrees or more shall include curved metal blades or vanes arranged so as to permit the air to make the abrupt turns without an appreciable turbulence. Turning vanes shall be securely fastened to prevent noise or vibration. All ducts shall be fabricated and installed in accordance with modern design practice. The sheet metal gauges and fabrication procedures as given in I.S.S. specifications shall be adhered to and shall be considered as an integral part of these specifications.

3.2.5. The duct work shall be varied in shape and position to fit actual conditions at building. All changes shall be in accordance with accepted duct design and subject to the approval of the engineer-in-charge. The Contractor shall verify all measurements at building and shall notify the Engineer-in-Charge of any difficulty in carrying out his work before fabrication.

3.2.6. Sponge rubber or approved equal gaskets shall be installed between all connections of sheet metal ducts to walls. Sheet metal connections shall be made to walls and floors by means of galvanized steel angles anchored to the building structure with anchor bolts and with the sheet bolted to the angles. Sheet metal connections shall be as shown in the drawings or as directed by Engineer-in-Charge.

3.2.7. All ductwork shall be independently supported from building construction. All horizontal ducts shall be rigidly and securely supported, in an approved manner, with trapeze hangers formed of galvanized steel rods and galvanized steel angel/channel under ducts. All vertical ductwork shall be supported by structural members on each floor slab. Duct supports may be through galvanized steel insert plates left in slab at the time of slab casting. Galvanized steel cleat with a hole for passing the hanger rods shall be welded to the plates. Trapeze hanger formed of galvanized steel rods and angles / channels shall be hung through these cleats. Wherever use of metal insert plates is not feasible, duct support shall be through dash /

anchor fastener driven into the concrete slab by electrically operated gun. Hanger rods shall then hang through the cleats.

3.2.8. Where ducts pass through brick or masonry openings, it shall be provided with 25 mm thick TF quality thermocole around the duct prior to sealing of the opening.

3.2.9. All ducts shall be totally free from vibration under all conditions of operation. Whenever ductwork is connected to fans that may cause vibration in the ducts, ducts shall be provided with a flexible connection, located at the unit discharge. Flexible connections shall be constructed of fire retarding flexible heavy canvas sleeve atleast 10 cm long securely but not more than 200 mm bonded and bolted on both sides. Sleeve shall be made smooth and the connecting ductwork rigidly held by independent supports on both sides of the flexible connection. The flexible connection shall be suitable for pressure at the point of installation.

3.2.10. Flanges and supports are to be black, mild steel and are to be primer coated on all surfaces before erection and painted with aluminium thereafter. Accessories such as damper blades

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and access panels are to be of materials of appropriate thickness and the finish similar to the adjacent ducting, as specified.

3.2.11. The ductwork should be carried out in a manner and at such time as not to hinder or delay the work of the other agencies especially the boxing or false ceiling Contractors.

4. DAMPERS

4.1 At the junction of each branch duct with main duct and split of main duct, volume control dampers must be provided. Dampers shall be rigid in construction to the passage of air.

4.2 The volume dampers shall be of an approved type, lever operated and complete with suitable level links & quadrants, locking devices which will permit the dampers to be adjusted and locked in any position.

4.3 The dampers shall be of opposed blade or louver type. The damper blade shall not be less than 1.25 mm (18) gauge and shall not be over 225 mm wide. Automatic and manual volume opposed blade dampers shall be complete with frames and bronze bearings as per drawings. Damper frames shall be constructed of 16 gauge steel

4.4 After completion of the duct work, dampers are to be adjusted and set to deliver the required amount of air as specified in the drawings.

5. ACCESS PANEL

5.1 A hinged and gasketed access panel shall be provided on ductwork before each control device that may be located inside the ductwork. Doors shall be provided with neoprene rubber gaskets. Angle joints shall be provided with neoprene rubber gaskets for leak tightness of the joints. Access door/panels shall be provided:-

Near each smoke sensor

Any other place specifically mentioned in the drawing or if asked by Owner/Consultants during execution stage.

6. MISCELLANEOUS

6.1 Sponge rubber gaskets also to be provided behind the flange of all grills.

6.2 Each shoot from the duct, leading to a grille, shall be provided with an air deflector to divert the air into the grille through the shoot.

6.3 Inspection doors measuring at least 450 mm x 450 mm are to be provided in each system at an appropriate location, as directed by Engineer-in-Charge.

6.4 Diverting vanes must be provided at the bends exceeding 600 mm and at branches connected into the main duct without a neck.

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6.5 Proper hangers and supports should be provided to hold the duct rigidly, to keep them straight and to avoid vibrations. Additional supports are to be provided where required for rigidity or as directed by Engineer-in-Charge.

6.6 All duct supports, flanges, hangers and damper boxes etc. Shall be given 2 coats of red oxide paint before installation and one coat of aluminium paint after the erection, at no extra cost.

6.7 All angle iron flanges are to be welded electrically and holes to be drilled.

6.8 All the angle iron flanges are to be connected to the GSS ducts by rivets at 100 mm centres.

7. SUPPLY AIR GRILLS / REGISTERS7.1 The air velocity in the supply air grill shall be restricted to 4 m/s.

7.2 Supply air grills/registers shall be of in mild steel construction. These shall be single louvered type, with volume dampers.

7.3 All registers shall have a soft, continuous rubber gasket between the periphery of the register and the surface on which it has to be mounted. The effective area of the registers shall not be less than 80%.

7.4 Bar longer than 450 mm shall be reinforced by a set back vertical member.

9. PAINTING

9.1 All grilles, and diffusers shall be powder coated in colour as approved by Architect/Consultant before installation.

9.2 All ducts immediately behind the grilles/diffusers etc. Are to be given two coats of black paint in Matt finish.

10. TESTING

10.1 After completion, all duct system shall be tested for air leakage.

10.2 The entire air distribution system shall be balanced to supply the air quantity as required in various areas and the final balance of air quantity through each outlet shall be submitted to the engineer-in-charge for approval. Measured air quantities at fan discharge and at various outlets shall be identical to or less than 5% in excess of those specified and quoted. Branch duct adjustments shall be permanently marked after air balancing is completed so that these can be restored to their correct position if disturbed at any time.

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SPECIFICATION No.:EES / DUCTING /057.3 AIR-REGISTERS - SPECIFICATIONS

1. SCOPE

The scope of this section includes supply, installation, testing, balancing and commissioning of various air distribution products as specified here under. All air distribution products shall have guaranteed performance rating as regards to air quantities, throw, noise level and pressure drop etc. Contractor has to provide section curves at the time of supply.

2. SUPPLY AND RETURN AIR REGISTERS AND CEILING TERMINALS

Supply and return air registers and ceiling terminals shall be made of Powder coated MS section as specified in BOQ. The registers/terminals shall be either anodized or powder coated in finish as given in BOQ. Supply air registers/terminals shall be provided with screw operated opposed blade volume control device of extruded aluminum in mill finish. the registers shall be suitable for fixing arrangement concealed or visible screw as approved by architect/consultant.

All registers shall be selected as per selection curved and in consultation with architect/ consultant. All registers shall have soft continuous rubber/foam gasket between the periphery of the registers/terminals and the surface on which it has to be mounted.

3. LINEAR FIXED BAR REGISTERS

Linear continuous supply or return air registers shall be extruded aluminum construction with fixed horizontal bars at 0o to 15o inclination with one way or two way deflection and flanges on both sides. The thickness of fixed bar louvers shall be 5 min in front and the flange shall be 20 mm wide with round edges. The register shall be suitable for concealed fixing and horizontal bars of the register shall be mechanically crimped from the back to hold them.

Volume control device of extruded aluminum construction in mill finish shall be provided in S.A duct collars.

4. DOUBLE ADJUSTABLE LOUVERED SUPPLY/RETURN AIR REGISTER WITH HORIZONTAL/ VERTICAL OR VERTICAL/ HORIZONTAL LOUVER ARRANGEMENT :

The register shall be adjustable as each louver shall be pivoted to provide pattern with 0o to ± 15o arc up to 30o deflection down towards. The louver shall hold deflection settings under all conditions of velocity and pressure. The rear louver of the register shall be in black shade.

5. SINGLE INDIVIDUAL ADJUSTABLE LOUVERED SUPPLY OR RETURN AIR REGISTER.

Single individual adjustable horizontal/vertical supply or return air register shall be made of extruded aluminum construction. The louvers shall hold deflection setting under all conditions of velocity and pressure since mounted on Nylon bushed. The register shall have 20 mm wide flange all around with front screw fixing.

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.

6. FRESH AIR INTAKE LOUVERS

Fresh air intake louvers 50 mm deep wherever required as per shop drawing will be made of extruded aluminum construction duly anodized of power coated. Bird/insect screen will be provided with the intake louvers. The blades are inclined at 45o on a 40 mm blade pitch to minimize water ingress. The lowest blade of the assembly shall extended out slightly to facilitate disposal of rain water without falling in door/wall on which it is mounted.

Wherever specified, the intake louvers shall be provided with factory fitted all aluminum construction volume control dampers in mill finish.

7. STORM PROOF LOUVERS :80 mm deep wherever required as per shop drawing will be made of extruded aluminum construction. The blades are inclined at 45 degree on 75 mm blade pitch to minimize water ingress. The lowest blade of the assembly shall extend out slightly to facilitate disposal of rain water without falling in door/wall on which it is mounted.

7.1 GRAVITY LOUVRSEasy operation heavy duty back draft extruded aluminum frame blade, with full length pivoting, vinyl Gasketing extended full length adjustable blade edge seal ,14 gauge arm mill finished gravity louvrs.

8. AIR TRANSFER DOOR REGISTER :

Extruded aluminum construction air transfer door register will be provided as per approved shop drawings. The register will be complete with single/double register frame to be mounted on door panel from both sides. The central core shall be NO-SEE-THRU type. The register shall be anodized or powder coated as per requirement. The register shall be provided with insect screen to prevent movement of insects from inside to outside or vice versa.

9. INSTALLATION

9.1 All register and grills shall be provided with a soft continuous rubber gaskets between their periphery and the surface on which these have to be mounted.

9.2 After completion the entire air distribution system shall be tested for air leaks and balanced in accordance with the specification.

10. BALANCING

10.1 The air distribution system shall be tested/balanced by Vendor so that the requisite air flow are maintained throughout the space to be ventilated.

11.2 During start up phase, Vendors shall make all arrangement for drilling and plugging of all test openings/holes, adjustment of volume dampers, adjusting of fan speed to obtain specified flows, obtaining actual motor ampere readings and all related functions to ensure the proper operation of all HVAC systems.

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12.3 All instruments required for testing balancing the air distribution system shall be provided by Vendor.

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SPECIFICATION No.EES/MAKES/04

8.0 APPROVED MAKES OF EQUIPMENT & MATERIALS

SH 1 OF 1

SNo Equipment / Material Approved Makes

1 Axial fans / Wolter/Airflow/Humidin

2 Motors ( 180 C FOR 2 HRS) ABB/ Siemens/Bharat bijlee/ havells

3Air Distribution/Ducting GI Sheets

Sail / Nippon / Tata/Jindal/Bhushan

4 Factory Fabricated Duct Eco/Rolastar/ Neutech/ zeco

5 Grills and diffusers Systemair/ /Caryaire/Mapro

6 Gravity louvers Caryaire/Air flow/Systemair

7 Co sensor Siemens/Honeywell/

8 Vibrators IsolatorsResistoflex / Flexionics (USA)

9 FASTNERS HILTI

10 PAINT ASIAN/ BERGER

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9: PREAMBLE9: PREAMBLE

1. The quantities given in the bill of quantities are approximate and are liable to vary due to exigencies of work. Such variations in quantities shall not, however, vitiate the contract in any way, whatsoever. The contractor will be paid for the actual measured quantities of work executed by him at the contract rates for each item of work.

2. All the items of work shall be executed strictly in accordance with technical specifications, equipment schedule, drawings and bill of quantities read in conjunction with codes/standards specified and intent of the specifications. Equipment construction specifications given in the NIT shall be treated as guidelines only. The equipment offered shall be of standard design and of normal manufacturing range. It shall be obligatory on the part of the tenderer to furnish all technical data relevant to the tender along with his offer. In case contractor fails to furnish relevant technical data of equipments or alternative specifications then NIT specifications shall be applicable.

3. The rate for each item of work specified in the bill of quantities shall unless expressly stated otherwise, include the following (but not limited to the list given below):

a) All materials, equipment, accessories, supporting structure components, labour, tools, tackles, plants, incidentals, etc. required for the full and entire execution and completion of the work including testing and commissioning.

b) Wastage on materials and labour.

c) Loading, unloading, transportation, handling/double handling hoisting to all levels, setting out of work, fixing in position, safe custody, security, disposal of debris and all other labour necessary for full and complete execution of the work as per specifications.

d) Liabilities, risk and obligations arising out of conditions of contract.

e) All taxes, entry tax, toll tax, works contract tax, excise duty, customs duty, octroi, insurance, packing and forwarding, insurance at site (till handing over), labour insurance or any other levies etc.

f) All the requirements of specifications, equipment schedule and drawings whether such requirements are mentioned in the item or not. Specifications, equipment schedule and drawings shall be read as part of bill of quantities.

g) Performance test at site after commissioning of the system.

4. The bill of quantities finished hereinafter shall be fully priced and the extensions and the totals duly checked. Tender with lump sum pricing will be rejected.

5. Unless otherwise stated, the measurements shall be carried out strictly in accordance with mode of measurements laid down in tender specification.

6. The term equipment or equal shall mean the equivalent as approved in writing by the consultant. The provision equivalent shall be operative only if, the specified make of material or equipment is not available in the market or production of such material is discontinued by the manufacturer.

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7. The prices shall be firm and shall not be subject to any variation due to increase in labour wages, cost of materials, exchange rate variations, variation in custom duties, excise duty, local levies, freight, etc. or any other variation due to any reason whatsoever, whether during the stipulated period of contract or during the extend period of completion if any.

8. The drawings indicating the nature of work have been issued along with the tender. Successful tenderer shall prepare his shop drawings/detailed execution drawings/layouts etc. and submit the same to the Engineer in charge for their approval within 15 days from the date of award of work.

9. The approval of execution drawings/shop drawings/layout drawings shall not in any way absolve the contractor of his obligation to fulfil the intent of the specifications.

10. It shall be contractors responsibility to provide adequate security and safeguard to the materials supplied at site and the materials/equipment installed at site till the job is completed and handed over to the employers.

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