Galvanized CZ Purlins

SECONDARY MEMBERS/ COLD FORMED MEMBERS

• Secondary structural framing refers to purlins, girts, eave struts, wind bracing, flange bracing, base angles, clips and other miscellaneous structural parts.
• Purlins, girts and eave struts are cold formed steel members which have a minimum yield strength of 345 MPa (50,000 psi) and will conform to the physical specifications of ASTM 572 (Grade 50) or ASTM A653 (Grade 50) or equivalent.

A horizontal secondary structural member, bolted to the rafters, which transfers the roof loads from the roof covering to the primary frames.