| A | B |
|---|
| tread | The horizontal part of a step on which the foot is placed. |
| trim | The finish materials in a building, such as moldings applied around openings (window trim, door trim) or at the floor and ceiling of rooms (baseboard, cornice, picture molding). |
| trimmer | The beam or floor joist into which a header is framed. Adds strength to the side of the opening. |
| trimmer stud | A stud which supports the header for a wall opening. The stud extends from the sole plate to the bottom of the header. It is parallel to and in contact with a full-length stud that extends from sole plate to top plate. |
| truss | A structural unit consisting of such members as beams, bars, and ties; usually arranged to form triangles. Provides rigid support over wide spans with a minimum amount of material. |
| valley | The internal angle formed by the two slopes of a roof. |
| valley rafter | A rafter which forms the intersection of an internal roof angle. |
| vapor barrier | A watertight material used to prevent the passage of moisture or water vapor into or through structural elements (floors, walls, ceilings). |
| veneered wall | A frame building wall with a masonry facing (ex: single brick). A veneered wall is non-loadbearing. |
| wainscot | A lower interior wall surface (usually 3 to 4 ft. above the floor) that contrasts with the wall surface above. May consist of solid wood or plywood. |
| wale | A horizontal wood or metal strip used on the outside form walls for concrete. Wales are used to keep the form walls from bending outward under the weight of poured concrete. |
| warp | Any variation from a true or plane surface. Warp includes bow, crook, cup, and twist, or any combination thereof. |
| weephole | A small hole, as in a retaining wall, to drain water to the outside. Commonly used at the lower edges of masonry cavity walls. |
| whaler | A horizontal member used in concrete form construction to stiffen and support the walls of the form. |
