BGeneral Building ContractorC-2Insulation and AcousticalC-5Framing and Rough CarpentryC17GlazingC33Painting and DecoratingC39RoofingC43Sheet MetalC46SolarC47General Manufactured HousingD24Metal ProductsD39ScaffoldingD41Siding and DeckingD63Construction Clean-upD65Weatherization and Energy Conservation