Multistory Frame Design Using Story Stiffness Concept

by Francois Cheong Siat Moy, (A.M.ASCE), Post-Doctoral Research Assoc.; Fritz Engrg. Lab., Lehigh Univ., Bethlehem, Pa.,


Serial Information: Journal of the Structural Division, 1976, Vol. 102, Issue 6, Pg. 1197-1212


Document Type: Journal Paper

Abstract: Irrespective of the design philosophy employed in proportioning unbraced multistory steel frames, the selection of member sizes can be greatly expedited with the aid of the story stiffness concept. Bending moments, P-Δ effects, sway buckling, and lateral instability are all functions of the story stiffness parameter. The use of this concept eliminates the difficulties generally encountered in the direct inclusion of P-Δ effects in design. The significance of the story stiffness concept in allowable stress design and plastic design is demonstrated.

Subject Headings: Allowable stress design | Stiffening | Plastic design | Mid-rise buildings | Steel frames | Moment (mechanics) | Buckling | Lateral stability

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