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Term Definition
Brass Fitting. Threaded pipe connector made of brass, used to join two pieces of pipe together.  
Brass. A metal alloy consisting essentially of copper and zinc in variable proportions.  
Braze Welding. Sometimes known as Bronze Welding. Often carried out as in fusion welding except that the base metal is not melted. The base metal is simply brought up to what is known as a tinning temperature (dull red color) and a bead deposited over the seam with a bronze filler rod.  
Braze. Solder with an alloy of brass and zinc at a high temperature.  
Brazed Connection. Parts that are hardened and connected by soldering with an alloy.  
Brazing. A welding process wherein coalescence is produced by heating to suitable temperatures above 800° F. and by using a nonferrous filler metal having a melting point below that of the base metals; the filler metal is distributed between the closely fitting surfaces of the joint by capillary attraction.  
Breach of Contract. A material failure to perform an act required by contract.  
Breadboard. A draw board in a kitchen cabinet used for kneading and slicing bread.  
Break Joints. To arrange joints so that they do not come directly under or over the joints of adjoining pieces, as in shingling, siding, and brick laying.  
Break. 1.To damage by separating into pieces under a blow or strain; shatter. 2. An interruption as in a circuit. 3. An interruption in the continuity of an element, such as a plastered wall or cornice.  
Breakdown. An itemized list of building costs.  
Breaker Strip. Strip of wood or plastic used to cover joint between outside case and inside liner of refrigerator.  
Breaker, Circuit. A switch which stops the flow of current by opening the circuit automatically when more electricity flows through the circuit than the circuit is capable of carrying; resetting may be either automatic or manual.  
Breaker, Main. A switch in a main electrical service panel where the service wires attach.  
Breaker, Vacuum. An electrical breaker with a space that contains rced air pressure.  
Break-Even Point. The financial position wherein total revenue received equals the sum of the costs and expenses for a particular project showing neither profit nor loss.  
Breaking Joints. The laying of bricks so that no two vertical joints come directly over one another; this is done for strength.  
Breakpoint. The point at which a rising concentration of chlorine in swimming pools kills germs and bacteria by oxidizing organic matter; once all matter is oxidized, the amount of chlorine remaining is free or uncombined.  
Breast Drill. A portable drill equipped with a plate that the operator leans against to provide pressure.  
Breast. 1.The front part of a fireplace above and around the firebox opening. 2. The projecting portion of a chimney, especially when projecting into a room.  
Breastplate. The pressure plate of a breast drill.  
Breastsummer. A beam to carry the load above a fireplace opening, also called bressumer.  
Breathing Zone. Area of a room in which occupants breathe as they stand, sit, or lie down.  
Breeching. Space in hot water or steam boilers between the end of the tubing and the jacket.  
Bressumer. See Breastsummer.  
BRI. Building-Related Illness.  
Brick Anchor. Fasteners that are designed to attach and secure a brick veneer to a concrete or brick wall.  
Brick and Brick. The laying of bricks by which the bricks are touching each other and the mortar used is just enough to fill the irregularities of the bricks.  
Brick Bat. Part of a brick, usually half a brick or less.  
Brick Bond. The pattern or arrangement of bricks in a wall.  

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