Abstract: A building beam structure having two sheet metal chords and a sheet metal central web section disposed between the two chords. Each chord has an end wall with two opposed side walls extending therefrom and two angular support walls extending from the side walls. The angular support walls converge inwardly from the side walls toward the central web section. The central web section has a main web wall extending between one of the angular support walls on each of the chords. In addition, the central web section has a first web wall section extending from another of the angular support walls on one of the chords, and a second web wall section extending from another of the angular support walls on another of the chords.