Highway, Street, and Bridge Construction, Poured Concrete Foundation and Structure Contractors, Structural Steel and Precast Concrete Contractors, Other Foundation, Structure, and Building Exterior Contractors, All Other Specialty Trade Contractors

Water Supply and Irrigation Systems, Sewage Treatment Facilities, Steam and Air-Conditioning Supply, Commercial and Institutional Building Construction, Water and Sewer Line and Related Structures Construction

Commercial and Institutional Building Construction, Highway, Street, and Bridge Construction, Other Heavy and Civil Engineering Construction, Poured Concrete Foundation and Structure Contractors, Structural Steel and Precast Concrete Contractors

Industrial Building Construction, Commercial and Institutional Building Construction, Water and Sewer Line and Related Structures Construction, Oil and Gas Pipeline and Related Structures Construction, Power and Communication Line and Related Structures Construction

Logging, Poured Concrete Foundation and Structure Contractors, Structural Steel and Precast Concrete Contractors, Framing Contractors, Masonry Contractors