Design, fabrication, supply and fixing of air tight doors for HEPA filter banks in PRAFPUL building, BARC, Mumbai-400085.

Amount

Airtight steel doors Design, Fabrication, Supply and fixing of air tight, Single / Double shutter doors with suitable frame for ventilation Filter Banks. Door frame shall be made of MS angle 50X50X6mm thick. and shall be welded to existing door m s frame. Door shutter (leaf) shall have grooves for rubber 25mm Square wide gaskets for sealing.; Door shutter shall be fabricated by using 16G g. i. sheet sandwiching 50 mm thick PUF insulation, suitable to with stand a pressure difference of 150mm WC across the doors. Sturdy S.S. hinges (shaft and barrel type), 25 mm thick neoprene rubber gasket all around the door having approved sure hardness, two pair brass handles with chromium coating for single shutter and having wedge shaped projection to turn against a roller for ensuring proper leak tightness or any other suitable arrangement as approved by EIC, viewing panel (double glass with gasket sealing), Handles at two places with locking arrangement; including all standard accessories, hardware, fasteners etc. to suit at site and as per the drawing approved by the Engineer-in-charge. Item includes fixing of door by using combination of various jobs like cutting, grinding, welding grouting, sealing etc. providing of supports as and whenever required to suit site; The complete doors to be painted by two coats of suitable epoxy primer after completion of fabrication and two coats of finish epoxy paint after installation. etc. complete as per detailed technical specifications and as directed by Engineer in charge.

Design, Fabrication and Supplying Single shutter door with frame of size up to 1150 mm x 2200mm

Design, Fabrication and Supplying Double shutter door with frame of size 1650 mm X 2200mm

Design, Fabrication and Supplying Double shutter door with frame of size 2100 mm X 2100mm

Design, Fabrication and Supplying Double shutter door with frame of size 1500 mm X 900mm

Arc welding for fixing of ms door frame to existing ms angle and shall be measured in per inch length basis (including consumable, edge preparation, DP testing in root and final run) etc. complete as per detailed technical speicifications and as directed by Engineer in charge.

Dismantling of existing doors and fininshing of old ms door frames i). Dismantling of existing damaged door shutter by using combination of various jobs like cutting, grinding etc. providing of supports as and whenevere required to suit site or as directed by the Engineer-in-charge; ii) Old MS frames studs used for earlier door locking shall be removed by grinding and making a smooth surface for fixing new door frame over it; iii)Cuting old shutter into a pieces not more thn 600mm wide before dumpng to diisposal point etc. complete and stacking old shutter within 100 mts. lead. Note Job will be measure as pe each shutter work. Maximum width of shutter is upto 1150mm an d height is up to 2200mm

20 mm thick Internal plastering Providing 20 mm thick plastering using Ready mix external plastering compound of approved make for external faces of brickwork / concrete surfaces including preparation of the surface, curing, cleaning scaffolding up to 10 metres height complete.all as per specifications including forming drip moulds wherever necessary and as directed by the EIC.

Microconcrete Providing and laying microconcrete (SFMC ) of M/s Dr. Fixit or euivalant approved make high early strength flwoable mortar and adding premeasured water by weight to make the mix flwoable and pour the same using suitable chute including mixing, transporting , placing,compacting,curing etc. Complete all as per site requirement and as directed by the Engineer in charge Note :- 1) Microconcrete should pass the requirement of BS 6463 ( part 3 & 4)-1987 for flowability and BS 4551-1980 for compressive strength and permeability as per manufacturers data sheet. 2) Actual quantity of SFMC alone used in the work will be paid.

Structural repairs Providing structural repairs in old damaged concrete structures / surfaces with approved Polymer with following operations 1)Removal of loose/Spalled or damaged concrete by chipping and cleaning the concrete surface and reinforcement steel with wire brush and with water 2) Cleaning the re bars with Acetone for complete rust removal and washing with water to make the surface clean. 3) Applying protective coat / bond coat using polymer and cement in the proportion of 1; 1.5 (1 part of polymer and 1.5 parts of cement in synthetic enamal paint like consistancy with brush 4) Reinstate the area with polymer modified mortar in layers of maximum 20 mm with the proportion of Cement 50 Kg : washed and dried river sand 87.50 kg ; silica sand 37.50 Kg. mixed with 10 litres of Polymer (or 1 Kg cement : 1.75 kg washed and dried river sand ; 0.75 Kg silica sand : 200 ml polymer) 1.00 Lit 609.00 671.00 5) If thickness of repair exceeds 20mm , after every 20 mm thick repair, bond coat as per 2 above to be applied and further thick of repair to be continued for each layer. This work is inclusive of all materials, labour, complete all as directed at site using approved polymer suitable for structural repair shall be used)

P. K. Enterprises

M/s Associated Engineers