The Structural Engineer > Archive > Volume 59 (1981) > Issues > Issue 12 > A Commentary on Portal Frame Design
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A Commentary on Portal Frame Design

Though the steel portal frame is one of the simplest structural arrangements for covering a given area, the designer probably has to satisfy at least as many different structural criteria as for more complex structures. Present-day design of portal frames is reviewed in the light of recent research studies into certain aspects of the behaviour of portal frames, particularly the problem of stability of haunched rafters. Guidance is given for checking the lateral stability of such members. L.J. Morris