Two closely spaced columns that form a pair.
An arcade supported on coupled columns.
A pair of opposite rafters which are connected by a collar beam or tie beam and are tied together at
Two equal and opposite parallel forces, with different lines of action, tending to produce rotation of a body; their moment
A rural residence of some importance.
A building once used primarily for accounting and bookkeeping.
A permanent, overhead, theater stage rigging system; used to raise or lower scenery or lighting equipment which is counterbalanced by
See elevator car safety.
A window having sashes, each of which is counterbalanced with a weight.
A movable frame in which are stacked the modular counterweights of a counterweight system.