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Interpanel Loading

In the ordinary multi-storey building frame wind loads are transmitted to the columns by beams at floor levels so that interpanel loading is usually absent or at least negligible compared with the total wind shear across the storey and in such cases the treatment already given is sufficient. But industrial and factory buildings may consist of only a few storeys of considerable height, depending on the purpose of the building, and in such cases wind loads are transmitted to the columns by intermediate beams or wind girders and the effects of this interpanel loading cannot then be neglected. Interpanel loading is usually treated in two stages the moments due to such loading being first distributed throughout the frame with all joints propped against side sway, the values of the props being deduced from the resulting end moments. The props are then removed, the frame being allowed to sway. It is only this final step, as applied to symmetrical single bay frames with which we have so far been concerned.