Providing and fixing ( PPGL) precoated painted galvalume sheet roofing (size, shape and pitch of corrugation as approved by Engineer-in-charge) The end rib shall have anti cappillary groove and return leg. The steel sheet must be having yield strength of 550 MPa ( Fy= 550 MPa) metallic coated with Zinc- Aluminium alloy ( i.e. 55% Al, 43.4%Zinc, 1.6% Si-Zincalume) AZ150 ( Min. 150 bm/mm2 total on both sides), pre painted with super Durable Polyster XRW quality paint includes inorganic infrared reflective pigment. The sheet confirms to general requirement of AS/NZS 2728 type 4/ IS 15965 class 3 durability and gloss value of 25% -40%. should be supplied in single length upto 12 metre or as desired by Engineer-in charge. The sheet shall be fixed using self drilling/self tapping screws of size (5.5x 55 mm) with EPDM seal, complete upto any pitch in horizontal/ vertical or curved surfaces, excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required. 0.60 mm (+ 0.05 %) thick