Bar joist

bar joist

[′bär ‚jȯist] (building construction) A small steel truss with wire or rod web lacing used for roof and floor supports.

Bar joist

An open web joist with diagonal struts made of round or square steel bars with the top and bottom chords made up from pairs of steel angles.

bar joist

An open-web flat-trussed structural member used to support a floor or roof structure.