This document defines and describes various building materials and components used in construction. It provides definitions for items like air barriers, attic ventilation components, backhoes, batter boards, brick bonds and arches, concrete joints, doors, electrical components, framing elements, insulation, plumbing fixtures, roofing materials, siding materials, steep roof components, stone masonry, vapor retarders, waterproofing, windows, and more. Each term is concisely defined or described.