SPL REPAIR / REPLACEMENT OF BER CENTRAL AC PLANT 2X61 TR CAPACITY AT AUDITORIUM UNDER GE(FW) KOLKATA

Amount

NOTE NOS :- 1. The bidders/contractors are advised to read tender document & all corrigendum/ amendments and General conditions of contracts before entry/quoting the rates. 2. It is highlighted that the cretin condition of General Condition Of Contracts (IAFW-2249) has been modified as direction of MOD i.e inclusion of performance security, deletion of risk & cost provisions and increase in defects liability period all as specified in tender document. The tenderers should keep in mind while quoting their offer.

Taking down /Dismantling of existing UNSV central type air condition of existing make 2X61TR with all accessories (i.e) Compressor , motor , pump , drain pipe , cable, valve, water pipe, air ducting damper with control Volume Control AHU , Fresh air damper , grill/colour damper , linear grills / diffusers etc including existing civil foundation from the position by unscrewing nuts bolts and washers off sizes etc and deposit at MES store yard without any damage as per direction GE/Engr-in Charge

Material and labour for design, supply, installation, commissioning and testing of Chilled water type Air Conditioning plant complete with all accessories all as specified in Appx-A enclosed here in after for Auditorium to meet inside design parameters (23± 3°C) with Relative Humidity (55±5%) ,Air changes per hour 10-15 and Maximum occupancy load of 400 person having min capacity 2 X 61 TR (One working + One Stand by) Note 1:- (a) Contractor / bidder needs to check the desired design conditions carefully before submit their bid . (b) Contractor / bidder shall submit complete design for the Central AC plant comprising of heat load calculations, working drawings of complete AC plant supported with design / calculations of each component duly vetted by IIT/NIT within two months of the date of commencement of work through GE for the approval of Accepting Officer before execution of the work. (c) Contractor / bidder will be responsible for performance guarantee of complete AC plant to achieve the inside design conditions round the clock throughout the year with overall COP of the system not less than 4.70 (d) The Schematic Sketch of existing Central AC plant Room and Auditorium is attached as Appx 'B' for reference purpose only. (e) Items for Condensor water pipe, chiller water pipes, GI ducting, electrical cable & control cable, valve, thermal and acoustic insultaion .strainer and air vent will be measured and paid separately under respective items of BOQ. Cont......

Cont...... Note 2:- Rates quoted by the contractor shall be complete finished work including cost of all labour, material, scaffolding, finishing as required with tools, plants, cartage, lift taxes, tollage, octooi, royalties etc. All works shall be executed as per drawings and instructions of Site-in-Charge and shall include the supply and installation at site of all the equipment, ancillary materials as specified and all such items what-so-ever which may be required to fulfill the intent and purpose as laid down in drawings. all materials shall be as per SI specification and with IS Certification marked wherever applicable. the material shall be duly approved by Engr-in-Charge before incorporation in the actual work.

Supply & Fixing MS pipe, 150mm dia, medium grade for recirculation of water from condenser to cooling tower and return including connection from make up water tank and water circulating pumps complete with all pipe fittings, like tees, elbows flanges in main pipe line complete all as required at site as per standard practice Make of pipe and fitting- Tata/ Jindal /Sail

All as per item No 4 here-in-before but pipe of 125 mm dia

All as per item No 4 here-in-before but pipe of 100 mm dia

All as per item No 4 here-in-before but pipe of 50 mm dia

Supplying, laying/ fixing, testing and commissioning of 150mm dia nominal sizes of MS pipe, class 'C' for chilled water piping inside the building (with necessary clamps, vibration isolators and fittings.) duly insulated with Closed Cell Class O Nitrile Rubber Elastomeric Insulation of Density 40-60 Kg/m3, Thermal Conductivity of 0.035 W/mk at 0 Deg Celsius Mean Temp andμ≥7000 (without any additional Vapour Barrier) and factory laminated 7 mil Glass Cloth (GC)covering using manufacturer's recommended Rubber based Adhesive in a blend of solvents complete as per specifications and as required complete in all respect. Chilled water piping and fitting of MS class C insulated with Rigid perforated sections of expended polystyrene of uniform density of 24 Kgs/m3, 50 mm thick finished with chiken wire mess and 10 mm thick cement sand plaster for interconnection & recalculating water between chiller unit, chilled water pump, expansion tank. Note : 1.The piping shall be so designed that the water velocity through the piping shall not exceed max 8 fps and also the piping friction drop shall be limited to 4 m per hundred meters of pipe length. (Pipe laid inside the bldg will be covered by Al Cladding 26 gauge). 2. The mentioned Parameters are for reference purpose only any changes and actual design may vary as approved by IIT/NIT shall be considered final.

All as per item No 8 here-in-before but pipe of 125 mm dia

All as per item No 8 here-in-before but pipe of 100 mm dia

All as per item No 8 here-in-before but pipe of 80 mm dia

All as per item No 8 here-in-before but pipe of 65 mm dia

Supplying, Fixing, Testing and Commissioning of 40 mm dia G.I. pipe medium grade per IS 1239 along with necessary clamps, fittings such as bends, tees etc. adequately supported and duly insulated with 13 mm thick closed cell elastomeric nitrile rubber of class 'O' insulation applied by adhesive confirming to standard specifications complete with type3, grade 1 bitumen roofing felt strip (as per IS:1322 as amended up to date) at joints and repairing of damage to building etc as required in drain water pipe complete all as specified and directed.

All as per item No 13 here-in-before but 32 mm dia GI pipe

All as per item No 13 here-in-before but 25 mm dia GI pipe

Design , supply, fabrication , installation and testing of GSS sheet metal factory made rectangular 1.00 mm thick GI ducts(20 gauge sheet), complete with MS frame structure and necessary supports using thread rods and anchor bolts, supply air collars, vanes complete with splitter damper, duct damper, vanes etc fabricated out of galvanized sheet class VIII conforming to IS 277 all as required and as per IS specification for supply and return air based on following parameters : (a)Max flow velocity (SA duct) - 365 m/min (b)Max flow velocity (RA duct) - 243 m/min (c) Max Friction drop - 1 cm wg/100 m run . (d) Acceptable maximum noise level in conditioned space- 45-50dB at 3m distance from diffusers as Per IS 1950-1962 . Note:- (1)The duct fabrication and installation shall confirm to IS 655-2006 all dampers, splitters shall be fabricated out of GS sheet of two gauges higher than the duct piece .All Items related to fabrication to fabrication of ducts shall confirm to the relevant IS mentioned in IS 655-2006. (2) The mentioned Parameters are for reference purpose only any changes and actual design may vary as approved by IIT/NIT shall be considered final and no extra payment shall be allowed for this. Make:- Elemech / Zeco / Rolastar

All as per item No 16 here-in-before but 0.80 mm thick duct (22 gauge sheet)

All as per item No 16 here-in-before but 0.63 mm thick duct (24 gauge sheet)

Supply, laying, testing and commissioning of XLPE insulated ,PVC outer Sheathed Copper conductor armoured cable of 25 Sqmm 4 core 1100 Volts grade including cable lugs , cable end termination with brass compression glands and copper lugs for connection of Chiller Machine complete all as specified and directed Note : Wherever required ladder type 16 G, GI perforated U shaped channel 40 mm x 20 mm cable tray of required size shall be provided without any extra cost.

All as per item No 19 here-in-before but of size 10 Sqmm 4 core for Connection of Condenser water pumps, Chiller Water Pumps, Cooling Tower and AHUs complete all as specified and directed.

All as per item No 19 here-in-before but using Control Cable 1.5 Sqmm 3 Core

All as per item No 19 here-in-before but using Control Cable 1.5 Sqmm 2 Core

Supply and fixing 150mm dia Butterfly valves (Manual) with CI body, SS disc, Nitrile Rubber seal and 'O' ring, PN - 1.6 pressure rating, double flanged type ISI marked as in chilled water piping including necessary fittings and welding arrangemnet complete all as specified and directed.

All as per item No 23 here-in-before but 125 mm dia Butterfly valves

All as per item No 23 here-in-before but 100 mm dia Butterfly valves

All as per item No 23 here-in-before but 80 mm dia Butterfly valves

All as per item No 23 here-in-before but 65 mm dia Butterfly valves

All as per item No 23 here-in-before but 50 mm dia Butterfly valves

Supply and fixing 40 mm dia Brass Globe / Gate Valves flanged end, PN - 1.6 mpa ISI marked complete all as specified and as directed.

Supply and fixing 32 mm dia Ball Valves set with or without 'Y' strainer, bronze body, flanged end type, PN -1.6 for water circulation complete all as specified and as directed.

All as per item No 30 here-in-before but 25 mm dia Ball Valves

Supply and fixing 125 mm NR Valves dual plateof CI body, SS plate, vulcanized NRB seal, flanged end, PN - 1.6 pressure rating ISI marked suitable for chilled / hot water circulation complete all as specified and as directed.

Supply and fixing 80 mm dia Balancing Valves with built in measuring facility of CI body, flanged construction with EPDM coated disc with long-pitch,PN - 1.6 pressure rating ISI marked suitable for chilled / hot water circulation complete all as specified and as directed.

Supply and fixing 125 mm dia Y Strainer of ducitile CI body, flanged end with stainless steel strainer complete all as specified and as directed.

All as per item No 34 here-in-before but 80 mm dia Y Strainer

Supply and fixing 12 mm dia manual air vent complete all as specified and as directed

Supply and fixing of thermal insulation for the sheet metal ducting with 75mm thick TF Polystrene covering with 20mm thick sand cement plaster (1:4) on external / exposed ducts installed outside the auditorium complete all as specified and as directed

Supply and fixing external thermal insulation on ducts with resin bonded fibre glass wool roll of density 24Kg/Cum, tape and adhesive (pidilite SR-998) of suitable thickness minimum 25mm thick with class O fire rating when tested under BS 476 Part 6 & BS 476 Part 7 securing the insulation with and including mechanically fastened nylon / steel strap of size 12mm / 50mm strap of size 12mm / 50mm at maximum intervals of 1.2m all as required at site for supply air duct passing through conditioned / unconditioned space and for return air duct passing through unconditioned space with factory laminated aluminium vapour barrier complete all as per standard practice and directed by Engineer-in-Charge.

Supply and fixing acoustic insulation inside the sheet metal duct with 10mm thick open cell Nitrile rubber complete all as specified and as directed

Supply, design, installation, connection, testing and commissioning of factory made totally enclosed with IP54 ptotection , dust and vermin proof, fully compartmentalized , floor mounted and CPRI approved cubical out door type LT feeder piller box made out of 3.15mm thick CRCA steel sheet of size 1500X1200X500mm and and angle iron 50x50x6mm with hinged double door shutters (front & rear) with locking arrangement ,canopy headed, grouted in PCC M-10 using 20mm graded stone aggregate including bus bar, internal wiring with PVC insulated, single core copper conductor cable of suitable size duly numbered with tags for the circuits.The panel should be suitable for 415 volts , 50Hz , 3 phase 4 wire system and internal connection should be provided with aluminium strips of suitable size and necessary foundation work and including taking out old feeder pillar box from exisiting location after necessary disconnection of all out going and incomming cables, cable joints, earth strips, other accessories comprising following items and all specified in SSR part -I clause No 19.21 :- Busbar: 630 Amps rated copper busbar TPN duly insulated with PVC Sleave asper standard colour code and rigidly mounted on backalite/ DMC insulated bus bar support ((square/ round) insulators of suitable size and good insulation resistance. Incoming: (a) MCCB, 4 pole, 415 volts,50 Hz, 400Amps 50KA breaking capacity with thermal magnetic release, adjustable Over load and short circuit settings -1No (b) On load Change Over Switch 400Amp ,50kA-01Nos (c) Multi function Meter 4410, class 1-1 No, with CTs of suitable capacity-1Set. (d) Indicator lamp LED type R-Y-B-1 set. Outgoing: (a) MCCB, 4 pole, 415 volts,50 Hz, 200 Amps 30KA with thermal magnetic release, adjustable Over load and short circuit settings -2 Nos (b) MCCB, 4 pole, 415 volts,50 Hz, 100 Amps,16 KA with thermal magnetic release, adjustable Over load and short circuit settings-2 Nos (c) MCB FP -32 Amps , C Curve -01 Nos (d) Contactor , 3 Phase , 415 Volts - 40 Amps -01 Nos (e) Astronomical Timer Switch- 01 Nos Note:- The feeder pillar box shall be manufactured by CPRI approved Manufacturer only having typed test certificate to be submitted.

Supplying, laying, jointing with aluminium lugs and testing LT cable in trenches or on poles / walls, XLPE screened, PVC bedded, galivanised steel strip or wire aroured, electric power cables (heavy duty) with aluminium conductor, 1100 volts grade of size 185 Sqmm 3.5 core including taking out old unserviceable complete all as directed.

Material & Labour for earthing with galvanised steel earth plate electrode of size 60cmx60cmx6mm thick buried directly in ground (earth pit not less than 2.25m deep below the ground level) with top edge of the plate not less than 1.5m below normal ground level, connected to the galvanised earth lead by means of bolts, nuts check nuts and washers of galvanised iron or steel using GI strip 32x6mm as earthing lead as shown in electrical plate No. 3 of SSR Part-I connected to earthing test point all as specified or indicated including testing on completion including necessary excavation and earth work in soft/loose soil, returning filling, disposal of surplus soil, earth pit in PCC 1:3:6 type C-1 using 20mm graded stone aggregate pit, funnel, 20mm dia GI medium grade watering pipe, 40mm dia GI medium grade earth lead protection pipe, CI frame and cover, wire, copper lugs etc mesh, chorcoal and common salt in alternatee layer including demolition of old earthing complete all as specified and directed.

Supply and fixing cable route indicaters made out of PCC (1:3:6) type C1 using 20mm graded stone aggregate size 900 x 300 x 100 mm thick (60 cm buried in ground with "DANGER/LT UG CABLE MES" embossed on marker including excavation and earth work complete all as directed.

Taking down carefully aluminium / copper point wiring any type for one light , fan, socket power point or buzzer controlled by one switch complete including fitting / fixtures such as switches, ceiling roses, holder, socket, light fitting etc; for credit and making good disturbed surfaces of walls, ceilings etc

Taking down main switches and DBs of any type and make including wooden board / junction box.

Material and labour for point wiring with 1.5 sqmm (nominal area) FRLS PVC insulated stranded copper conductor single core including PVC conduit of appropriate size concealed in wall, pressed steel concealed terminal boxes of required size and with top cover 3 mm thick of plastic laminated sheet of reqd colour, painting terminal boxes inside and out side with one coat red oxide primer complete with all accessories and all as specified including 1.5 Sqmm FRLS PVC insulated unsheathed multistranded copper earth conductor to common earth and connected to earth dolly for fan / light / exhaust fan/ bell point controlled by one switch. Note:- 1. Cost of PVC conduit, steel terminal boxes, plastic laminated sheet cover etc; are deemed to be included in the quoted rate. 2. Cutting chases on walls / ceiling and making good disturbed surfaces including finishing with cement mortar (1:3)and ,putty and plastic paint matching with existing surface etc; shall be deemed to be included in the rate quoted above.

All as per item No. 46 here-in- before but for 3 pin 5 Amps switch socket combination on independent board with 1.5 sq mm copper cable.

All as per item No. 46 here-in- before but for 3 pin 15 Amps switch socket combination on independent board with 2.5 sq mm copper cable as main and earthen wire

Supply and fixing modular switch single pole, one way, 6 Amps complete all as specified and directed.

Supply and fixing modular switch single pole , one way 16 Amps 1/2 module complete all as specified and directed

Supply and fixing socket out let 6A modular type -2/3pin 2 module complete all as specified and directed.

Supply and fixing socket out let 16A modular type -2/3pin 3 module complete all as specified and directed.

Supply and fixing modular type White cover plate with frame 10 module complete all as specified and as directed

Supply and fixing modular type White cover plate with frame 8 module complete all as specified and as directed

Supply and fixing modular type White cover plate with frame 6 module complete all as specified and as directed

Supply and fixing modular type White cover plate with frame 4 module complete all as specified and as directed

Supply and fixing modular type metal flush box 10 module complete all as specified and as directed

Supply and fixing modular type metal flush box 8 module complete all as specified and as directed

Supply and fixing modular type metal flush box 6 module complete all as specified and as directed

Supply and fixing modular type metal flush box 4 module complete all as specified and as directed

Supply and fixing modular blank plate 1 module complete all as specified and as directed.

Supply and fixing LED Deep Recessed , low glare ,high power downlight with die cast Al frame with anodised aluminium reflector fitting, of capacity 1x20w, 230v, with suitable drivers etc, complete with all accessories internally pre wired and including connecting up with twin core twisted flexible copper conductor cable suitable size complete all as specified and directed Make :Bajaj Model No. BCDLR20W WH or Equivalent in Philips/Wipro

Material and labour for sheet metal enclosure for DBs SPN 8 way with rated bus bar, 240 V, Double door, complete flush mounted all as specified and as directed. Make : L&T/Legrand/Schneider/Seimens

Material and labour for MCB isolators single pole 240 volts 5 to 32 Amps.B Curve Make : L&T/Legrand/Schneider/Seimens

Material and labour for MCB isolator single pole & neutral 240 volts 5/6 to 32 Amps. Make:- L&T/Legrand/Schneider/Seimens

Supply and laying submain wiring with two single core 6 sq mm FR PVC insulated copper cable 1100 volts grade multi stranded, un sheathed conductor in PVC Conduit including 6 sq mm multi-strand FR PVC insulated copper wire for earth continuity conductor connected to common earth dolly including taking out old submain wiring complete and making good disturbed surface complete. Note :- Cost of PVC conduit, cutting chases on walls and making good disturibed wall surfaces including finishing with cement mortar (1:4) matching with the existing shade/tint are deemed to be included in the quoted rate.

Material and labour for earthing complete with galvanised steel earth plate electrode 60 cm x 60 cm x 6mm thick buried directly in ground (earth pit not less than 2.25 metre below ground level) with top edge of the earth plate not less than 1.5 metre below ground level, connected to GI earth wire 4 mm dia by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No 3 of SSR Part I connected to earth test point all as specified or indicated including excavation and connected earth work, in soft/loose soil, removing soil upto 50m, PCC 1:3:6 type C1 as in pit, 20mm dia GI pipe medium grade for watering pipe, 40mm bore GI medium grade earth lead protection pipe, 50mm thick RCC 1:2:4 type B1 cover slab of earth pit reinforced with 8 mm dia TMT Bars @ 10cm C/C both ways and with handle made out of 20mm dia bars, funnel, strainer, alternate layer of charcoal dust and common salt and testing on completion including demolition of old earthing complete all as specified and directed.

Excavation in trenches not exceeding 1.5 Mtr wide and not exceeding 1.5 Mtr depth in soft / loose soil and getting out for removing / laying of pipe lines complete all as specified.

Returning and filling including spreading, levelling, watering and well ramming in layers not exceeding 25 Cm thick all as specified and directed by Engr-in-Charge.

Removing of surplus soil to a distance not exceeding 50 Mtrs and depositing where directed at a level not exceeding 1.5 Mtr above the starting point complete all as specified.

Materal and labou for Sand cushioning with clean dry sand in trenches for protection of under ground cables (below, above and around the cable laid in trenches) complete all as specified and directed. (Note: Thickness after punning down shall be measured for payment)

Supply and laying in trenches brick common burnt clay building brick, sub class 'B' with width equal to length of brick for cable protection complete all as specified and directed.

Demolition of brick work built in cement mortar incl all quions, arches, pillars etc complete all as specified and directed

Taking down cement plaster on brick or concrete surface including racking out joints, hacking for key, scrubbing down with water etc complete all as specified and directed

Dismantling wall and ceiling boards (fibre, pulp, insulation etc) or insulation boards / slabs/ blankets any thickness including cover fillets complete all as specified and directed

Dismantling floor hearth or wall tiling incl cement morter bedding (but not backing) removing serviceable tiles to store and rubbish off the premises complete all as specified and directed

Dismantling wrought iron or mild steel work of any description not otherwise provided for complete all as specified and directed

Materal and labour for 5mm thick rendering on fair faces of concrete surfaces in CM (1:3) as on ceiling including finishing concrete surfaces even and smooth without using extra cement complete all as specified and directed

Material and labour for 15mm thick rendering in CM(1:6) on fair face of brick or concrete surfaces finishing the surface even and smooth without using extra cement complete all as specified and directed

Material and labour for 15mm thick rendering in CM(1:4) on fair face of brick or concrete surfaces finishing the surfaced even and smooth without using extra cement complete all as specified and directed

Material and labour for Fly ash Brick with Sub-class 'B' Bricks (with old size bricks), straight or curved on plan exc 6.0 metre mean Radious, built in Cement Mortar 1:6 complete all as specified and directed

Supply and fixing rolled mild steel in joist, channel, angle or tee section independently without connecting plates, etc (cut to ordinary length i.e. within 20mm of the length indicated) of FE-410-W (Gde-E-250) quality -B complete all as specified and directed

Expanded metal,cut to length, bent to shape required and tying with and including annealed mild steel wire not less than 0.9mm dia weight n.exc 4 Kg per Square metre or fixing with galvanised steel staples supplied and fixed completed to wood or steel members complete all as specified and directed

Material and labour for preparation of new or previously untreated steel or any iron surface of any description over 10 cm width or girth surface exceeding 10 cm and applying two coats of synthetic enamel paint over a coat of red oxide primer complete all as specified and directed

Material and labour for 2nd class hard wood, plain fillet, square, rectangular or triangular in section clean sawn cross sectional are exceeding 13 Sq cm but not exceeding 25 Sq cm secured with nails or brads including dismantling of old fillets complete all as specified and directed

Material and labour for 2nd class hard wood, plain fillets square or rectangular or triangular in section clean sawn screwed with nails or brass sectional area exc 6 Sqcm but n.exc 13 Sqcm including dismantling of old fillets complete all as specified and directed

Material and labour for machine cut Kota stone slab flooring 20-25 mm thick over cement screed base laid and jointed with grey cement slurry mixed with pigment to match the shade of the slab including rubbing and polishing including 20mm thick screed bed or bedding layer in cement mortar (1:6) over brushing with neat cement slurry with 3.00 Kg of cement per Sqm complete all as specified and directed

Material and labour for suspended false ceiling with 12mm thick perforated particle board / tiles for insulation and acoustic purposes, 60 x60 cm in size, fixed with staples on snap grid, in a grid of hot dip GI exposed pre coated suspension system with GI frame work for seamless ceiling comprising of GI perimeter channel, unequal flange and web etc of suitable size duly suspended with 6mm dia GI bar hanger fixed with steel dash fastnerers or iron purline from the roof with adjustment clip providing positions for light fixtures, air conditioning diffuser and ducts, sprinkler, smoke detectors etc. the main runners to be secured to structural soffits by hanger@1220 mm maximum c/c. the last hanger at the end of each main runner should not be placed at more than 450mm from the adjacent wall, flush fitting 1220mm cross tee to be interlocked between main runners@ 610mm c/c, so as to form 600mm x 600mm grid complete all as specified and directed

Material and labour for preparation of newly plastered surfaces of ceiling and applying two coats of acrylic washable distemper over a coat of alkali resistant primer complete all as specified and directed

All as per item no 86 here-in-before applied over 3mm thick water proof wall care putty complete all as specified and directed

Material and labour for applying one coat of acrylic washable distemper to old decorated (distempered) surfaces of wall including preparation of surface (by brooming down or steel wire brushing, scrapping down smoke, soot, moulds, moss, efflorescent salts, trading oil and greasy spots) complete all as specified and directed

Material and labour for applying two coats of cement base paint over a coat of primer on newly plastered surfaces of walls including preparation of surfaces complete all as specified and directed

Material and labour for preparation of old surfaces of ceiling by complete removal of existing treatment and applying two coats of acrylic washable distemper over a coat of primer complete all as specified and directed

Preparaing surfaces of wood and wood based materials new or old of any description and girth and treated with two coat of creosote oil.

Material & Labour for 12mm thick perforated particle board / tiles for insulation and acoustic purposes, 60x60 cm in size, fixed with nails to timber frame work on walls incl cover fillets of adequate size with 2nd class hardwood complete all as specified and directed. [Note: Timber frame work shall for fixing of board shall be measured and paid separately under respective items]

Supply and fixing mild steel chequered plate as in cable duct cover conforming to Fe 410 W, cut according to the width & length of cable duct, properly grind and painted with bituminous paint over a coat of primer including taking out old cover plate complete all as specified and directed.

Note: Schedule of credit (SCHEDULE OF CREDIT) amount of Rs __________ mentioned on Page No _______ shall be deducted from the total quoted amount of BOQ.

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