Airports Authority Of India Tender

Providing, erecting, fitting, fixing, amalgamating with original roof i/c joining & welding wherever necessary of 65/400 "SELF SUPPORTED" CONCEALED FIX ALUMINIUM STANDING SEAM ROOFING SYSTEM MINIMUM 0.9 MM THICK made of aluminium alloy AA3004 comprising of the following layers: (i) Top Layer- 65/400 profiled sheeting manufactured from Aluminium of minimum thickness of 0.9 mm as approved by Engineer-in-Charge. (ii) Insulation layer 1 - Rock wool 50mm thick, density 96 kg/m³ (iii)Insulation layer 2 - Rock wool 50mm thick, density 120 kg/m³ (iv) 1 layer of vapour control barrier - Polyethylene film of 0.20 mm thick, heavy duty type. On the existing perforated Steel liner type 28-35/200-250 or Trapezoidal sheeting, (v) Existing halter shall be tightened & steel fastener to be provided wherever required. (vi) Providing PVF2 to match existing coating on the outer face of aluminium standing seam roof. (vii) Provide and fix 12 mm cement/ plaster fibre board for roofing system wherever required as per site requirement. (ix) Providing & Fixing of Halter of size 115 mm for Roofing system wherever required as per site requirement. Note: Inner perforated liner sheet & space frame with the profile are already in place. Item also includes removing handling and shifting of existing roofing layers before execution of works. 1) Removal of top sheet 2) Removal of Insulation 3) Removal of VCL 4) Removal of Halter 5) Removal of Top hat / Batten. 6) Removal of Cement Board. All above steps are to be executed both for roofing system of Terminal Building as well as Aerobridges as per direction of EIC and with minimal hindrances to the Airport operations all complete. (Note : Wind Load Calculations are to be shared by System Provider and got vetted through IIT/ NIT).

Removal of existing top roofing sheet and replacement of 50 mm thick rockwool of density 96 Kg/cum and 12 mm thick cement board of approved brand and reinstallation of existing top roofing sheet along with halter installation all complete as per direction and satisfaction of E-I-C.

Providing and fixing Aluminum Flashings of 0.90 mm thick aluminum alloy AA3004 PVDF2 RAL9010 colour with protective film Girth upto 578mm at various location at all height all complete as per direction and satisfaction of E-I-C.