Slope of roof not flatter than 1 vertical to 5 horizontal.
In case of roofs having slopes less than 1 vertical to 2.5 horizontal sheets, not joined together at the side laps by galvanized iron bolts and nuts of 25 * 6 mm size, with bitumen and a GI limpet washes.
Holes for bolts punched and not drilled from the underside.
ACC Sheet Roofing:
The distance between the edge and the holes is less than 40 mm.
Roof ladder and planks not used while laying the sheets.
Side lap not lay on the side.
Rain Water Pipes:
The pipes used are not of specified size, diameter or weight.