Structural wood products, namely, structural roof trusses and joists; structural wood products, namely, structural beams, headers, namely, wooden headers in the nature of framing members crossing and supporting the ends of joists and studs so as to transfer their weight to parallel joists and studs or rafters, and pressure treated wood columns; building construction materials in the nature of laminated wood planking and wood decking; and wood bridges
Nonmetallic Building Materials