The document defines and provides images of various building materials and construction elements. It discusses air barriers, attic ventilation materials, backhoes, batter boards, brick bonds, brick sizes, bulldozers, cladding, code requirements, concrete joints, concrete masonry units, decorative CMUs, doors, electrical components, framing elements, front end loaders, gypsum board, heat pumps, insulation, lintels, mortar, oriented strand board, plumbing, plywood, radiant barriers, rebar, roof drainage, roof materials, roof shapes, roof terms, stone, vapor retarders, waterproofing, weep holes, welded wire fabric, and windows.