Components - Secondary Framing

Purlin, girt and eave struts shall be cold formed from steel which has minimum yields strength of 345 Mpa and will confirm to the physical specifications of ASTM A-570 (Grade 50) or equivalent.  

    Purlins and Girts shall be roll formed Z-sections, 120-300 mm deep with 50-100 mm flanges. Each flange shall have a 16 mm stiffening lip formed at 45 degrees to the flange with a thickness of 1.5 to 2.5 mm.

    C-channels are 100-300 mm deep roll formed with 50-100 mm Flanges with a thickness of 1.5 to 2.5 mm.
All other miscellaneous secondary members shall have a minimum yield strength of 240 MPa.
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