The length of a beam between its bearing supports.

A block which distributes a load on the surface beneath the block.

The distance between centers of bearing bars in a metal grating.

1. A wrought-iron bar placed on masonry to provide a level support for floor joists. 2. A load-carrying bar which

1. Any horizontal beam, joist, or member which supports a load. 2. A support for a landing or winder in

A test of the flexural strength (modulus of rupture) of concrete from measurements on a standard unreinforced concrete beam.

The width of a light beam, measured in degrees, at the meeting point between two imaginary lines at which the

The angle between two directions (on opposite sides of the axis of a light beam, and in the same plane