built beam

built-up beam

built-up beam on a post
1. A beam made of structural metal units (such as plates and angles) which are riveted, bolted, or welded together.
2. A beam of precast concrete units which are joined by shear connectors.
4. A timber made up of several pieces fastened together, forming one of larger dimensions.
References in periodicals archive ?
We built beams with six layers," he says, which doesn't get down to the scale of thousands of layers in a seashell.
In less than 1 second, the device these scientists have built beams 12 colors of light sequentially down a cable of optical fibers and onto the tissue the fibers are touching.