Steel pipes of metal; metal flanges; metal piping components, namely, snap ring joints; metal roofing tile

Building and construction materials, namely, brick, concrete pipe, pre-cast and pre-stressed concrete pipe, pre-cast molded concrete forms for architectural and structural building components and structures, namely, pre-cast concrete box culverts, drainage storm and sewer manholes and catch basins for attachment to sewer pipes to catch debris, double tees, roof and wall units, architectural panels, spandrel and fascia panels, columns, beams, hollow-core planks, parking structure panels, tunnel segments, garage floors, and retaining walls; autoclaved aerated concrete blocks; non-metallic water pipes, pipes of cement or polyethylene; concrete gravity pipe; concrete pressure pipe; non-metal rigid and semi-rigid bar-wrapped concrete pressure pipe; clay conduits and plastic conduits for drainage and irrigation; building materials, namely, roofing tiles comprised primarily of non-metal elements; non-metallic construction materials, namely, composite panels comprised primarily of a reinforced cement core that is mechanically bonded to steel sheets on both outer surfaces for use in barriers and doors; wall systems consisting of reinforced, dry-stacked, engineered concrete block with insulating core and coated with surface bond cement; waterproofing system comprised of non-metal wall system elements designed to prevent entry of moisture and to prevent entry of moisture and growth of mold

Concrete structure construction works; brick and aircrete block structure construction works; construction and repair of buildings and structures made of concrete and masonry; technical consultation in the field of building construction

Design and planning of paving systems, drainage systems, surface water control systems, heat exchange systems, and systems for channeling, collection, and utilization of water, namely, storm water pipe, box culvert, manholes and storm water control structures; design and planning of engineered pressure pipe for use in water transmission lines, power plant cooling water systems, sewer force mains, chilled water systems, irrigation networks, treatment plant intake, process, and outfall lines, subaqueous lines, and industrial process lines; design of building blocks and bricks for use in building; design of walling and cladding systems for use in building; design of chimneys, roofing and flue systems for use in building; design and technical engineering services for flooring and precast concrete, including engineered structural flooring and stair solutions, hollow core flooring, and beam and block flooring all for use in building; design of paving materials; engineering services, namely, calculation of U-value for building elements and brick matching