19 concrete drainage structures, namely, mortar nets, mortar vents; non-metallic building materials, namely, bagged natural stone, bagged gravel, bagged sand, silt fencing, dewatering bags, sediment control socks, soffits, sewer and drain pipe of ceramic or earthenware or concrete or sandstone, deck drains of concrete or ceramic, bituminous waterproofing sheets, storm water channels, erosion control jute mesh mats, drain filters, grout bags, rock texture mats, non-chemical concrete bond brakers, expansion board, curb and gutter felt, rebar caps, column forms, and form board