Providing and fixing of central air-conditioning system (AHU and Allied works) in School of Energy Science and Engineering (SESE) IIT Guwahati Campus

Amount

Double skin ceiling suspended direct driven AHU , 4500 CFM , 50mm SP, 6RD , Coil Compete as required.

Reinstalltion of dismantled AHU, connection of Chilled water Piping, testing and commissioning i/c repairing of bearing, V-Belt, greasing and painting of Blower Motor etc as complete as required.

Dismantling of Defective AHU copper colling coil by cutting,welding, etc. and shifting the same from existing position to dump yard within 100 mtrs etc. as complete as required.

Supply and fixing of self adhesive non-reflective sunfilm with 50 % Visible Light Transmission (VLT), 0.5 Solar Heat Gain Coefficient (SHGC), UV rejection as complete as required.

Supplying & laying , testing & commissioning mild steel ' C ' class pipe of size as mentioned below on exposed surface,wooden support, MS angle- clamp alongwith priming coat of steel primer as per standard specification complete as required.

50 mm dia

Providing and fixing Chilled water pipe insulation with 50 mm thick TF quality expanded polystyrine of 20 kg/ m3 density and finaly covered with chiken wire mesh and 10 mm thick sand cement plaster in two layer and two coat of approved brand of painting on the pipes - For over ground pipes.

50 mm dia

Providing and fixing of GI drain water piping with 19 mm thick closed cell nitrile rubber with sand cement plaster complete as required

32 NB (medium class)

Supply, Insatallation, testing and commissioning of Auto Air-purge valve of 25mm dia as complete as required.

Power Cabling Supply,installation,testing and commissioning of PVC insulated sheathed 1.1 KV grade armoured Al. Power cables from various panels upto their respective equipment on MS painted perforated trays with appropriate clamps/fixing arrangements as per specifications and drawings.(supply )

3 C X 16 mm2 Aluminium Cable

Control Cable 1.5 X 3 core ( copper for 2-way valve )

Supply of 1.1KV grade PVC/XLPE insulated Armoured Aluminum underground Cables.(Approved Make-Havells, KEI, Polycab, RR Kabel,RPG, NICCO, Finolex, CCI, Incab)

25 Sq.mm 3 1/2 Core

Providing and fixing in position the following manual Butterfly valve- manual (Insulated) with C I body SS Disc, Nitrile Rubber Seal and O-Ring PN 16 pressure rating for chilled water circulation as specified

50 mm dia

supplying,installation,testing and commissioning of following indusrial type thermometer and pressure gauge with ball valves for isolation complete as required(supply )

Thermometer

pressure gauge

Providing and fixing of insulated motorised 2-way valve 50 mm with actuator ,position feedback etc complete as required.

Supplying and fixing of following thickness duly laminated aluminum foil of mat finish closed cell Nitrile rubber (Class "O") insulation on existing duct after applying suitable adhesive for Nitrile rubber. The joints shall be sealed with 50 mm wide and 3 mm thick self adhesive nitrile rubber tape insulation complete as per specifications and as required.

Providing and fixing in position the following insulated Y-stainer of (50) mm dia as per the specifications complete as required.

Supply and fixing of acoustic lining of supply air duct and plenum with 25 mm thick nitrile insulation having density of 32 kg/m³, with 25 mm X 25 mm GI section of 1.25 mm thick, at 600 mm centre to centre covered with Reinforced Plastic tissue paper and 0.5 mm thick perforated aluminum sheet fixed to inside surface of ducts with cadmium plated nuts, bolts, stick pins, CPRX compound etc. complete as required and as per specifications.

Duct/Grilles/Diffusers Supply, Installation, balancing and commissioning of fabricated at site GSS sheet metal rectangular/round ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, support etc. as per approved drawing and specifications of following sheet thickness complete as required.

thickness 0.63 mm sheet

Providing and fixing of extruded aluminium powder coated grills/diffusers as per specifications and drawings complete as required.

Supplying, fixing testing commissioning of supply/return Grill of powder coated aluminium without aluminium volume control dampers with anti smudge ring & removable core.

Supply, installation, testing and commissioning of GI volume control duct damper complete with neoprene rubber gaskets, nuts, bolts, screws linkages, flanges etc, as per specifications.

Laying and fixing of one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size on wall surface as required

Upto 35 sq. mm (clamped with saddle)

Supplying and making end termination with brass compressiongland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KVgrade as required

3½ X 25 sq. mm (28mm)

Providing and fixing false ceiling at all height including providing and fixing of frame work made of special sections, power pressed from M.S. sheets and galvanized with zinc coating of 120 gms/sqm (both side inclusive) as per IS : 277 and consisting of angle cleats of size 25 mm wide x 1.6 mm thick with flanges of 27 mm and 37mm, at 1200 mm centre to centre, one flange fixed to the ceiling with dash fastener 12.5 mm dia x 50mm long with 6mm dia bolts, other flange of cleat fixed to the angle hangers of 25x10x0.50 mm of required length with nuts & bolts of required size and other end of angle hanger fixed with intermediate G.I. channels 45x15x0.9 mm running at the spacing of 1200 mm centre to centre, to which the ceiling section 0.5 mm thick bottom wedge of 80 mm with tapered flanges of 26 mm each having lips of 10.5 mm, at 450 mm centre to centre, shall be fixed in a direction perpendicular to G.I. intermediate channel with connecting clips made out of 2.64 mm dia x 230 mm long G.I. wire at every junction, including fixing perimeter channels 0.5 mm thick 27 mm high having flanges of 20 mm and 30 mm long, the perimeter of ceiling fixed to wall/partition with the help of rawl plugs at 450 mm centre, with 25mm long dry wall screws @ 230 mm interval, including fixing of gypsum board to ceiling section and perimeter channel with the help of dry wall screws of size 3.5 x 25 mm at 230 mm c/c, including jointing and finishing to a flush finish of tapered and square edges of the board with recommended jointing compound , jointing tapes , finishing with jointing compound in 3 layers covering upto 150 mm on both sides of joint and two coats of primer suitable for board, all as per manufacturer's specification and also including the cost of making openings for light fittings, grills, diffusers, cut-outs made with frame of perimeter channels suitably fixed, all complete as per drawings, specification and direction of the Engineer in Charge but excluding the cost of painting with :

12.5 mm thick tapered edge gypsum fire resistant board conforming to IS: 2095- Part I

Providing and applying white cement based putty of average thickness 1 mm, of approved brand and manufacturer, over the plastered wall surface to prepare the surface even and smooth complete.

Applying one coat of water thinnable cement primer of approved brand and manufacture on wall surface :

Water thinnable cement primer

Distempering with 1st quality acrylic distemper (ready mixed) of approved manufacturer, of required shade and colour complete, as per manufacturer's specification.

Two or more coats on new work

Dismantling aluminium/ Gypsum partitions, doors, windows, fixed glazing and false ceiling including disposal of unserviceable surplus material and stacking of serviceable material within 50 meters lead as directed by Engineer-in-charge.