Secondary Framing System
Secondary framing consists of elements which support the roof and wall sheeting and transfer load to the primary framing. These include roof purlins, wall girts, eave struts, clips etc. Which has minimum yield strength of 345 Mpa.
Purlins and grits shall be cold formed Z sections, 120-300mm deep with 50-100mm flanges with a thickness of 1.52-2.5mm, these are fixed to the top flanges of the rafters by means of clips welded to the rafters, and the purlin web bolted to the clips. Purlin ends overlap to act as continuous beams.
Wall grits are cold formed Z sections, with depth of 150-250mm and having thickness 1.5-2.5mm which are fixed to the outer flange of the side wall columns by means of clips welded to the column and girt web bolted to the clips.
Advantages of Rooffit PEB