A framework of sleepers and crossbeams forming a foundation in marshy or treacherous soil.

Grid of steel rebar in a concrete foundation to spread the load over a wider area.

(French): Aviary wire. Sometimes used to replace original panels in armoire doors.

A network of timbers laid across each other, generally at right angles. Frequently placed on the heads of piles for supporting bridge piers and other masonry. Also a network of rolled or built beams put in a pier, to distribute the weight from the shoe, or at the bottom of a shaft to spread quickly the weight over a greatly enlarged area.