joist

Any of the wood, steel, or concrete beams set parallel from wall to wall or across or abutting girders to support a floor or ceiling.

To construct with joists.

In building, one of the pieces of timber to which the boards of a floor or the laths of a ceiling are nailed, and which themselves rest on the walls or on girders, and sometimes on both. Joists are laid horizontally in parallel equidistant rows.

To fit or furnish with joists.

To fit or furnish with joists.

A piece of timber laid horizontally, or nearly so, to which the planks of the floor, or the laths or furring strips of a ceiling, are nailed; — called, according to its position or use, binding joist, bridging joist, ceiling joist, trimming joist, etc. See Illust. of Double-framed floor, under double, a.

A piece of timber laid horizontally, or nearly so, to which the planks of the floor, or the laths or furring strips of a ceiling, are nailed. Called, according to its position or use, binding joist, bridging joist, ceiling joist, trimming joist, etc.

To fit or furnish with joists.

beam used to support floors or roofs