Slender Columns Interaction Diagrams


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Title: Slender Columns Interaction Diagrams

Author(s): Eldon F. Mockry and David Darwin

Publication: Concrete International

Volume: 4

Issue: 6

Appears on pages(s): 44-50

Keywords: buckling; columns (supports); frames, loads (forces); long columns; moments; reinforced concrete; slenderness ratio; structural design; structural engineering.

Date: 6/1/1982

A procedure for developing slender column interaction diagrams is presented. The provisions of ACI 318-77 for the approximate evaluation of slenderness effects are utilized. Conventional interaction diagrams are modified using a nondimensional parameter characterizing column slenderness. The interaction diagrams developed provide a direct solution for the reinforcing ratio of single columns. The approach presented will reduce the design time for reinforced concrete structures.