This visual dictionary document defines and provides images of various construction materials and components. It includes definitions and images for items like air barriers, attic ventilation materials, backhoes, batter boards, brick bonds, bulldozers, cladding types, concrete masonry units, doors, electrical components, framing elements, gypsum board, heat pumps, insulation materials, lintels, mortar joints, oriented strand board, plumbing fixtures, plywood, rebar, roofing materials, steep roof shapes and terms, stonework, vapor retarders, waterproofing, weeps holes, welded wire fabric, and window types. The document acts as a reference for many common construction items.