Definition of the term Backflow Preventer
A device or means to prevent backflow into the potable water supply.
A device or means to prevent backflow into the potable water supply.
Movement of water (or other liquid) in any direction other than that intended.
The slope of the ground adjacent to the house. In any previously excavated area, i.e., the replacement of excavated earth into a trench around and against a basement foundation. In carpentry, the process of fastening together two pieces of board…
In glazing, a polyethylene or polyurethane foam material installed under compression and used to control sealant joint depth, provide a surface for sealant tooling, serve as a bond breaker to prevent three-sided adhesion, and provide an hour-glass contour of the…
The practice of nailing roofing felts to the deck under the overlap, in addition to hot mopping, to prevent slippage of felts.
A window with hinges at the top allowing it to open out and up.
In carpentry, a wood-boring tool used by a carpenter to bore holes.
In houses, screened openings provided to ventilate an attic space. They are located in the soffit area as inlet ventilators and in the gable end or along the ridge as outlet ventilators. They can also consist of power-driven fans used…
An opening that is placed in the dry-walled ceiling of a home providing access to the attic.
A molding which is attached to one of a pair of swinging doors against which the other door strikes.