Branch Line A drain line which empties into a the main drain line. An electric circuit with a separate fuse or circuit breaker. Bridging, Blocking A series of cross-braces between ceiling or floor joists to stabilize them and keep them from twisting under load. Building Paper Rolls of resin or tar-impregnated paper used a barrier layers under roofing, siding, and finish flooring. Most building papers have been replaced by synthetic materials but they still have limited uses.
Casings See surrounds .
Casement Window A window with hinges on one side of the sash, such that it that opens like a door. Any internal brace between studs , etc., to stabilize, provide subsurface support, or other purpose. A very rigid, cement based, structural sheet material. It is used as a base for ceramic tile instead of cement over lath. Chip Board See wafer board .