The document provides definitions and descriptions of various construction materials and methods. It includes entries on air barriers, attic ventilation components, backhoes, batter boards, types of bricks and bonds, bulldozers, cladding materials, code requirements, concrete joints, concrete masonry units, doors, electrical components, framing elements, front end loaders, gypsum board, heat pumps, insulation materials, lintels, mortar types, oriented strand board, plumbing fixtures, plywood, radiant barriers, rebar, roof drainage and materials, roof shapes and terms, stone types, vapor retarders, and waterproofing.