automatic door bottom
A movable plunger, in the form of a horizontal bar at the bottom of a door, which drops automatically when […]
Glossary
Glossary
awning blind
A blind which is hinged at the top; can swing outward and be fixed in position by a stay.
Glossary
axial-flow fan
1. One of the following types of fans: vaneaxial, tubeaxial, or propeller. Such fans impart energy to the air by
Glossary
awning window
A window consisting of a number of top-hinged horizontal sashes one above the other, the bottom edges of which swing
Glossary
authority having jurisdiction
A federal, state, local, or other regional department, or an individual such as a fire chief, fire marshal, chief of
Pic
back veneer
In veneer plywood, the layer of veneer on the side of a plywood sheet which is opposite the face veneer
General
back fillet
The return of the margin of a groin, doorjamb, or window jamb when it projects beyond a wall.
Glossary
atmospheric-type vacuum breaker
A backflow preventer containing a float check, check seat, and an air inlet port. As water flows through this device,