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Term Definition
Crematory. See Crematorium.  
Creosote Oil. Distillate, heavier than water, from coal tar, used largely as a wood preservative.  
Creosote Stain. Creosote, made mostly from wood and coal tars, mixed with linseed oil and drier and thinned with benzine or kerosene.  
Creosote. A brownish oily liquid obtained by distillation of coal tar, used as a wood preservative.  
Creosoted Pole. A wooden pole that has been impregnated with creosote to help with its preservation.  
Crescent Wrench. An adjustable wrench.  
Crescent. 1. The curved sickle shape of the waning moon, with a convex and a concave edge. 2. Anything of this shape.  
Crest. 1. Of a weir, the surface over which the liquid flows. 2. The ridge of a roof.  
Crew Trailer. A trailer provided on a job site for use by workers.  
CRI. Carpet & Rug Institute.  
Cricket. A chimney flashing on the uphill side, resembling a small roof ridge, to divert the rainwater around the chimney.  
Crimping Pool. A hand operated tool to apply metal corner beads or fasten steel studs to track by clinching part of metal.  
Crimping. Method of texturizing staple and continuous filament yarn to produce irregular alignment of fibers and increase bulk and covering power; also facilitates interlocking of fibers, which is necessary for spinning staple fibers into yarn.  
Cripple Rafter. The fillers in a roof framing system which connect the valley and hip rafters.  
Cripple Stud. 1. A short wood stud occurring in less than full height walls. 2. A short wood stud occurring over door or window headers or under window dsills.  
Crisper. Drawer or compartment in refrigerator designed to provide high humidity along with low temperature to keep vegetables, especially leafy vegetables, cold and crisp.  
Criterion. (Pl. criteria) A standard on which a judgment or decision may be based.  
Critical Path Method (CPM). A construction schling system.  
Critical Pressure. Compressed condition of refrigerant which gives liquid and gas the same properties.  
Critical Temperature. Temperature at which vapor and liquid have same properties.  
Critical Vibration. Vibration which is noticeable and harmful to structure.  
Crook. The distortion of lumber in which there is a deviation, in a direction perpendicular to the edge, from a straight line from end-to-end of the piece.  
Crooked Edges. A curvature of the sides, either convex or concave, measured along the sides of flat surface. The degree of crook is the departure from the straight line between two corners, expressed in percentage of length.  
Cross Brace. Bracing with two intersecting diagonals; slender diagonal member within a framed wall or partition, to support the wall or partition and to withstand structural loads imposed by wind and suction loads, building loads, movement, and deflection of structure.  
Cross Break. A crack or separation of wood cells across the grain of a board; may be caused by unequal shrinkage or by external forces.  
Cross Connection. 1. The improper interconnection of potable and contaminated water piping. 2. The improper interconnection of electrical or communication wiring.  
Cross Examination. Questions framed to undermine the testimony of a witness.  
Cross Fitting. A plumbing fitting consisting of two short pipes meeting at right angles on a pipe run.  
Cross Furring. Term used to denote furring members attached to other structural components to support lath in suspended ceilings; generally 3/4 inch steel channels or pencil rods.  
Cross Grain. Wood incorporated into a structure in such a way that its direction of grain is perpendicular to the principal loads on the structure.  

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