| annual rings | Rings or layers of wood which represent one growth period of a tree. In cross section the rings may indicate the age of the tree. |
| asphalt | A residue from evaporated petroleum. It is insoluble in water but is soluble in gasoline and melts when heated. Used for waterproofing roof coverings, exterior wall coverings, and flooring tile. |
| bay window | A rectangular, curved, or polygonal window, or group of windows usually supported on a foundation extending beyond the main wall of a building. |
| beam | A principal structural member used between posts, columns, or walls. |
| bearing wall | A wall which supports a vertical load in addition to its own weight. |
| framing | The timber structure of a building which gives it shape and strength; including interior and exterior walls, floor, roof, and ceilings. |
| header | Horizontal structural member that supports the load over an opening, such as a window or door. Also called a lintel. |
| insulation | (Thermal) Any material high in resistance to heat transmission that is placed in structures to reduce the rate of heat flow. |
| joist | One of a series of parallel framing members used to support floor and ceiling loads, and supported in turn by larger beams, girders, or bearing walls. |
| masonry | Stone, brick, hollow tile, concrete block, or tile, and sometimes poured concrete and gypsum block, or other similar materials, or a combination of same, bonded together with mortar to form a wall, pier, buttress, etc. |