Establishes safe operating practices for the installation, maintenance and removal of membrane roofing that is seamed or seamless on low-sloped roofs with a maximum slope of four (4) and twelve (12). These types of roofs include but are not necessarily limited to hot and cold built-up roofing, single-ply roofing, polyurethane foam (PUF) roofing, liquid-type roofing (Hypalon, polyurethane, etc.), modified bitumen's. NOTE: This standard does not apply to composition or wood shingles, slate, tile and metal roofs that are normally installed on roofs with slopes four (4) and twelve (12) or greater.