Reference Library

The Glossary

Definitions Explained in Plain English

Chamfer
A beveled edge on a board formed by removing the sharp corner. Generally used on moldings, edges of drawer fronts, and cabinet doors.
Chase
A slot or continuous groove built in a masonry or frame wall to accommodate ducts, pipes, or conduits.
Chimney
A vertical flue for passing smoke from a heating unit, fireplace, or incinerator.
Chipped Grain
Wood surface that has been roughened by the action of cutting tools. Considered a defect when surfaces are to be smoothly finished.
Chord
The horizontal member of a truss connecting the lower corners.
Circuit
Two or more wires through which electrical power flows from the distribution panel to one or more outlets or fixtures, then back.
Circuit Breaker
A safety device that breaks the flow of electrical current whenever a circuit becomes overloaded.
Clear Title
A title to property that is free of any defects.
Cleat
A piece of wood, normally used in frame construction, fastened to another member to serve as a brace or support.
Clerestory
An outside wall of a room or building that rises above an adjoining roof and contains windows.
Coffered Ceiling
A ceiling with recessed square panels, bordered with trim for ornamental purposes.
Collar Beam
Nominal 1 or 2 in. thick members connecting opposite roof rafters. They serve to stiffen the roof structure.
Computer Aided Design (CAD)
Using the computer to perform drafting and design functions.
Concrete
A mixture of cement, sand, and gravel with water.
Concrete Block
A hollow concrete 'brick' often 8" x 8" x 16" in size. Often used in low rise commercial and some residential construction.
Concrete Form
A temporary structure built to contain concrete during pouring and initial hardening.
Conditions and Restrictions
The term used to designate any conditions to which the use of land may not be put and the penalties for failure to comply.
Conduction
The flow of heat through an object by transferring heat from one molecule to another.
Conduit
piping made out of plastic or metal used to protect electrical wire.
Construction Loan
A short-term loan taken for the expressed purpose of building. Installment payments are made and when the building is complete, the loan is usually replaced by a longer-term mortgage.
Contract
An agreement between a seller and purchaser. The title is withheld from the purchaser until all required payments to the seller have been completed.
Convection
Refers to the transfer of heat by moving fluid (liquids and gases).
Conventional Framing
A method of roof framing which uses rafters and joists. These framing members are measured, cut, and hoisted into place by building professionals at the jobsite during construction. Also referred to as stick framing.
Coping
A cap or top course of a masonry wall to protect lower areas from water penetration.
Corbel
A ledge or shelf constructed by laying successive courses of masonry out from the face of the wall.
Core
The inner layer or layers of plywood. The core may consist of veneer, solid lumber, or composition board.
Corner Bead
A lightweight strip of metal, angled to reinforce corners in drywall.
Corner Braces
Diagonal braces at the corners of frame structure to stiffen and strengthen the wall.
Cornice
The part of a roof that projects out from the wall.
Cornice Return
That portion of the cornice that returns on the gable end of a house
Counter Flashing
A flashing used under the regular flashing.
Cove
Molded trim of a concave shape used around cabinet construction and other built-ins.
Crawl Space
The shallow space below the floor of a house built above the ground. Generally it is surrounded with the foundation wall.
Crawlspace Vent
An opening to allow the passage of air through the unexcavated area under a first floor. Ideally there should be at least two vents per crawlspace.
Cricket
A device used at roof intersections to divert water.
Cripple
A structural member that is cut less than full length, such as a studding piece above a window or door.
Cross Bracing
Boards nailed diagonally across studs or other boards to make framework rigid.
Crown Molding
A decorative molding used at the top of cabinets, at ceiling corners, and under a roof overhang.
Cul-de-sac
A street or court with no outlet, which provides a circular turn around for vehicles.
Cull
Building material (especially boards) that is rejected because of defects or below useable grade.