Research Article
Jan 1978
Frame Design without Using Effective Column Length
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VIEW THE REPLYPublication: Journal of the Structural Division
Volume 104, Issue 1
Abstract
The pitfalls underlying the use of the effective column length concept in frame design are illustrated. It is shown that such a concept can be unsatisfactory for both braced and unbraced fromes whether they are loaded predominantly by gravity loads or by combined gravity and lateral loads. The basis for the development of a rational design method based upon the story stiffness concept is then presented. This design procedure can eliminate the use of the K-factor, if all secondary effects are included in the calculation of the real forces acting on the members. In the light of the unconservative nature of present design specifications, some fundamental formulation is proposed for their possible modifications. In particular, it is recommended that calculation of story stiffness be a clearly stated requirement in design codes.
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Published In
Journal of the Structural Division
Volume 104 • Issue 1 • January 1978
Pages: 23 - 33
Copyright
© 1978 American Society of Civil Engineers.
History
Published in print: Jan 1978
Published online: Feb 1, 2021
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Authors
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Francois Cheong-Siat-Moy, AM.ASCE
Asst. Prof. of Civ. Engrg., Dept. of Civ. and Mineral Engrg., Univ. of Minnesota, Minneapolis, Minn
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.