Determination of Effective Length Factors for Slender Concrete Columns

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Title: Determination of Effective Length Factors for Slender Concrete Columns

Author(s): John E. Breen, James G. MacGregor, and Edward O. Pfrang

Publication: Journal Proceedings

Volume: 69

Issue: 11

Appears on pages(s): 669-672

Keywords: building codes;columns (supports);frames;long columns;reinforced concrete; slenderness ratio;structural analysis;structural design.

Date: 11/1/1972

Abstract:
Section 10.11.3 of the 1971 ACI Building Code requires that the effective length factor k for slender concrete columns be determined with due consideration of cracking and reinforcement on relative stiffness. The reasons for this requirement are outlined and a calculation procedure is proposed which results in acceptable accuracy.