The image above illustrates the basic contruction elements of a Portal Frame. The structural elements include: the stanchion or column and the rafter or beam (both generally universal beams) which create the knee joint, apex, Z purlins (can also be C purlins), Z girts (can also be C girts), safety mesh, box gutter, generally pad footing with an infill slab and a rigid base or pin joint connection.
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