Arched Chord Joists Consist Of Cold Rolled Top And Bottom Chords. The Chords Are At The Specified Uniform Distance Apart, At Specified Radii, With A Modified Warren Web Configuration
Since the chords are hot rolled angles, cold formed to specified radii, Vulcraft reduces the allowable stress in the top chord dependent on the radius of the top chord.
This product has significant effects on the analysis of the entire structure because of horizontal force effects at the support points. These forces and horizontal deflection limitations must be defined by the Specifying Design Professional.
These joists have a cold roll formed double angle top and bottom chords, which are the only variations 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 AN ARCHED CHORD JOIST PROFILE AND LOADING DIAGRAM. DIAGRAMS SUCH AS THESE SHOULD APPEAR ON THE STRUCTURAL DRAWINGS TO EXPEDITE THE DETAILING AND APPROVAL PROCESSES.