Flat Sheet

The section values shown on this page have been calculated from the nominal dimensions of the profile. All the shapes listed in the table are available but not all are stocked. For information on availability and price, contact Treadwell Group on 1800 246 800.

Allowable Uniform Load Tables

Full section 3-point bending tests were conducted on Treadwell Reinforced Plastics’ H-Beams, I-Beams, C Section and Square Hollow Section. The allowable uniform load tables were generated using these tests results as well as the formulas, properties, and assumptions listed below. Formulas for critical buckling and lateral-torsional buckling developed from theory are presented in Chapter 6 and 7 of the ASCE Structural Plastics Design Manual.