| A | B |
|---|
| fiber saturation point | the stage in the drying or wetting of wood at which the cell walls are saturated and the cell cavities are are free from water--assumed to be 30 percent moisture content |
| fire stop | a block or stop used in wall of building to restrict the spread of fire |
| flashing | sheet metal or other material used in roof and wall construction to prevent rain or other water from entering |
| flat roof | a roof which is level, or which is pitchedo only enough to provide for drainage |
| flue | the space or passage in a chimney through which smoke, gas, or fumes rise |
| flush | adjacent surfaces even, or in same plane (with reference to two structural pieces) |
| footing | the spreading course or courses at the base or bottom of a foundation wall, pier, or column |
| foundation | the supporting portion of a structure below the first-floor construction, or grade, including the footings |
| framing | the timber structure of a building which gives it shape and strength; including interior and exterior walls, floor, roof, and ceilings |
| frieze | a boxed cornice wood trim member attached to the structure where the soffit and wall meet |
| furring | narrow strips of wood spaced to form a nailing base for another surface; used to level, to form an air space, and to give a thicker appearance to the base surface |
| gable | that portion of a wall contained between the slopes of a double-sloped roof and a line projected horizontally through the lowest elevation of the roof construction |
| gain | notch or mortise cut to receive the end of another structural member or a hinge and other hardware |
| gambrel roof | a roof slope formed as if the top of a gable (triangular) roof were cut off and replaced with a less steeply sloped cap |
| girder | a large or principal beam used to support concentrated loads at particular points along its length |
| glazing | the process of installing glass into sash and doors |
| glazing compound | a plastic substance of such consistency that it tends to remain soft and rubbery when used in glazing sash and doors |
| glue block | a wood block, triangular or rectangular inshape, which is glued into place to reinforce a right-angle butt joint--sometimes used at the intersection of tread and riser in stairs |
| grade beam | thickened and reinforced section of a slab foundation designed to rest on supporting piling |
| ground | a strip of wood assisting the plasterer in making a straight wall and in giving a place to which the finish of the room may be nailed |
| ground fault interrupter | an electrical safety device which can be installed either in an electrical cicuit or at an outlet--it is able to detect a short circuit and shut off power automatically |
| grounding | a system used for electrical safety--electrical wire runs from the exposed metal of a power tool to a third prong on the plug--used with a grounded receptacle, this wire directs harmful currents away from the operator |
| grout | a thin mortar used in masonry work |
| gusset | panel or bracket of either wood or metal attached to the corners or intersections of a frame to add strength and stiffness |
| gutter | wood or metal trough attached to the edge of a roof to collect and conduct water from rain or melting snow |
| gypsum wallboard | wall covering panels consisting of a gypsum core with facing and backing of paper |
| half story | the part of a building situated wholly or partly within the roof frame, finished for occupancy |
| hardboard | a board material manufactured of wood fiber, formed into a panel having a density range of approximately 50 to 80 lb. per cu. ft. |
| header | horizontal structural member that supports the load over an openng, such as a window or door--also called a lintel |
| headroom | the clear space between floor line and ceiling, as in a stairway |
| heartwood | the wood extending from the pith or center of the tree to the sapwood, the cells of which no longer participate in the life processes of the tree |
| heat transmission coefficient | hourly rate of heat transfer for one square foot of surface when there is a temp difference of one degree F. of the air on the two sides of the surface |
| hip roof | a roof which rises from all four sides of a building |
| hollow-back | removal of a portion of the wood on the unexposed face of a wood member to more properly fit any irregularity in bearing surface |
| hollow core door | flush door with a core assembly of strips or other units which support the outer faces |
| horn | the extension of a stile, jamb, or sill |
| hose bib | a water faucet that is threaded so a hose connection can be attached--a sill cock |
| I-beam | a steel beam with a cross section that resembles the letter "I" |
| incinerator | a device which consumes household waste by burning |
