Bowstring Joists Consist Of A Cold Rolled Arched Top Chord And Straight Bottom Chord With A “Modified Warren” Web Configuration
Since the chords are hot rolled angles, cold formed to a specified radius, Vulcraft reduces the allowable stress in the top chord dependant on the radius of the top chord.
These joists have top chords fabricated from hot rolled angles cold formed to geometric specifications, which is the only variation from Vulcraft’s standard joist fabrication procedures.
Indicating the following required information on the structural drawings will expedite the pricing and detailing of the project, resulting in fewer questions on the joist approval drawings.
BELOW IS AN EXAMPLE OF HOW TO EFFECTIVELY SPECIFY A BOWSTRING JOIST PROFILE AND LOADING DIAGRAM. DIAGRAMS SUCH AS THESE SHOULD APPEAR ON THE STRUCTURAL DRAWINGS TO EXPEDITE THE DETAILING AND APPROVAL PROCESSES.