Engineering Journal Article Downloads → Discussion: A Technical Note: Derivation of the LRFD Column Design Equations
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The information presented by the author on the background and development of the LRFD column design equations is much appreciated. This discussion pertains to physical justifications of the equations and an issue related to the classroom teaching of column design. A common practice in teaching the design of a particular type of structural member (tension, compression, flexural, etc), is to first describe, qualitatively, the behavior and limit states of the member, then proceed to develop analytical predictions using basic mechanics of materials principles. The predictions, together with the available experimental and/or numerical results are then used to explain the applicable design provisions, as they are approximations or simplifications to the analytical predictions. This process provides the students with a good appreciation of the provisions. This however, is not the case for column design using the LRFD equations.