The Structural Engineer > Archive > Volume 31 (1953) > Issues > Issue 1 > Correspondence Continuous Rigid Portal Frames
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Correspondence Continuous Rigid Portal Frames

Sir,-Mr. Bolton has recently pointed out in your columns that in an article dealing with the solution of continuous ridged portal frames, no example with a north light type of roof or with unsymmetrical load on the rafters was given, and goes on to say that the calculations of fixed-end constraints and of the effect of unit operations for such conditions makes a solution much more difficult.