The Structural Engineer > Archive > Volume 58 (1980) > Issues > Issue 8 > Simple Calculation of Elastic Critical Loads for Unbraced, Multistorey Steel Frames
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Simple Calculation of Elastic Critical Loads for Unbraced, Multistorey Steel Frames

A method has recently been proposed for the design of unbraced, multistorey steel frames to limiting values of horizontal deflection. It is shown that this permits an approximate value for the lowest elastic critical load to be quickly calculated. Study of a typical frame demonstrates that in many cases the result can be expected to be sufficiently accurate for use in design. D. Anderson