A guide to those annoying little construction terms that you were always wondering about... don't worry, they get more and more obscure as time goes on.
On a theater stage, a hanger for an overhead track, from which scenery, flats or panels are suspended.
The characteristic of partially dried paint film which results in tearing and crumbling when pulled with the fingernail.
A large unexcavated mass, usually at the center of an unexcavated area, which is left undistrurbed; may be removed when the work nears completion.
To use or have a pattern of checkers. Such as a classic kitchen checkerboard floor pattern.
A corrugated fastener.
The protective fortress of a city.