Nam of Work : Provisioning of AC ducting in newly proposed CSC in lieu of renting out existing CSC to BOI at CTO building Kolkata.
Sl. No.
Item Description
1
Dismantling of existing GI sheet AC ducting with glass wool insulation above the false ceiling etc. complete as required. (Note:1. The AC duct dismantling work shall be carried without damaging the false ceiling. 2. The dismantalled AC ducting shall be the property of the firm, so the rates shall be quoted accordingly.)
2
Closing the opening of existing AC duct of size 2 ft x 2 ft with the help of existing dismantled GI sheet i/c cutting, jointing etc. complete as required.
3
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, supports etc. as per approved drawing and specifications of following sheet thickness etc. complete as required:-(Note: The duct is to beinstalled above the existing false ceiling. Utmost care must be taken for the protection of false ceiling.
4
a) 22 SWG
5
Supply and fixing of following thickness duly laminated aluminium foil of mat finish close cell Nitrile rubber (Class \"O\" ) insulation on existing duct after applying suitable adhesive for Nitrile rubber. The joints shall be sealed with 50mm width and 3 mm thick self adhesive nitrile rubber tape insulation complete as per specification and as required.
6
a) 19mm
7
Fabricating and installation of suitable size collar made out of 22 SWG GI sheet in the existing supply air duct i/c cutting jointing etc. complete as required.
8
Fixing of existing dismantled supply air diffuser on the false ceiling etc. complete as required.
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