Industrial building construction, commercial and institutional building construction power and communication line and related structures construction highway, street, and bridge construction, other heavy and civil engineering construction poured concrete foundation and structure contractors structural steel and precast concrete contractors framing, contractors masonry contractors glass and glazing contractors, roofing contractors, siding contractors other foundation, structure, and building exterior contractors, electrical contractors and other wiring installation contractors other building equipment contractors, painting and wall covering contractors, other building finishing contractors, all other specialty trade contractors, brick, stone, and related construction material merchant wholesalers