| A | B |
|---|
| convenience outlet | electrical outlet into which may be plugged portable equipment such as lamps |
| cope | to cut or shape the end of a molded wood member so it will cover and fit the contour of an adjoining piece of molding |
| corbel out | to extend outward from the surface of a masonry wall one or more courses to form a supporting ledge |
| corner bead | molding used to protect corners. also a metal reinforcement placed on corners before plastering |
| corner braces | diagonal braces let into studs to reinforce corners of frame structures |
| cornice | exterior trim of a structure at the meeting of the roof and wall; usually consists of panels, boards, and moldings |
| counterflashing | flashing used on chimneys at the roof-line to cover shingle flashing and prevent moisture entry |
| cove molding | molding with a concave profile used primarily where two members meet at a right angle |
| cripple jack (cripple rafter) | a rafter which intersects neither the plate nor the ridge and is terminated at each end by hip and valley rafters |
| cripple stud | a stud used above a wall opening. extends from the header above the opening to the top plate |
| cupola | small vented four-sided structure installed on a roof. adds decoration to the building and provides ventilation for the attic |
| curtain wall | a wall, usually non-bearing, between piers or columns |
| dado | a rectangular groove cut in wood across the grain |
| dead bolt | special door security consisting of a hardened steel bolt and a lock. lock is operated by a key on the outside and by either a key or handle on the inside |
| dead load | the weight of permanent, stationary construction included in a building |
| decay | disintegration of wood substance due to action of wood destroying fungi |
| degree day | method of measuring the harshness of climate for insulation and heating purposes. a degree day is the product of one day and the number of degrees the mean temperature is below 65 degrees F. |
| dimension lumber | lumber 2 to 5 in. thick, and up to 12 in. wide |
| dimensional stability | the ability of a material to resist changes in its dimensions due to temperature, moisture, and physical stress |
| direct gain system | passive solar construction in which the sun shines directly into living space to heat it |
| door frame | an assembly of wood parts that form an enclosure and support for a door. door frames are classified as exterior and interior |
| door stop | a molding nailed to the faces of the door frame jambs to prevent the door from swinging through |
| dormer | a projecting structure build out from a sloping roof. usually includes one or more windows |
| drip cap | a molding which directs water away from a structure to prevent seepage under the exterior facing material. applied mainly over window and exterior door frames |
| drip groove | semicircular groove on the underside of a drip cap or the lip of a window sill which prevents water from running back under the member |
| drop siding | siding, usually 3/4 in. thick and machined into various patterns. drop siding had tongue and groove or shiplap joints |
| dry rot | a term loosely applied to many types of decay, but especially to that which, when in an advanced stage, permits the wood to be easily crushed into a dry powder |
| drywall | sheet materials used for wall covering which do not need to be mixed with water before application |
| eased edge | corner slightly rounded or shaped to a slight radius |
| eaves | the lower part of a roof that projects over an exterior wall. also called the overhang |
| electric moisture meter | meter used to determine the moisture content of wood. action is based on electrical resistance or capacitance which varies with change in moisture content |
| elevation | the height of an object above grade level. also means a type of drawing which shows the front, rear, and sides of a building |
| equilibrium moisture content | the moisture content at which wood neither gains nor loses moisture whn surrounded by air at a given relative humidity and temperature |
| escutcheon | in builder's hardware, a protective plate or shield containing a key hole |
| expansion joint | a bituminous fiber strip used to separate blocks or units of concrete to prevent cracking due to dimensional change caused by shrinkage and variation in temperature |
| facade | main or front elevation of a building |
| face nail | a nail driven perpendicular to the surface of a piece |
| factory and shop lumber | lumber intended to be cut up for use in further manufacture. graded on the basis of the percentage of the area which will produce a limited number of cuttings of a specified, or a given minimum, size, and quality |
| fascia | a wood member used for the outer face of a box cornice where it is nailed to the ends of the rafters and lookouts |
| fenestration | the placement or arrangement and sizes of the windows and exterior doors of a building |
| fiber board | a broad term used to describe sheet material of widely varying intensities; manufactured from wood, cane, or other vegetable fibers |
