Shearing Strength of Reinforced Concrete Column Footings

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Title: Shearing Strength of Reinforced Concrete Column Footings

Author(s): Eivind Hognestad

Publication: Journal Proceedings

Volume: 50

Issue: 11

Appears on pages(s): 189-208

Keywords: no keywords

Date: 11/1/1953

Abstract:
A re-evaluation of F. E. Richart's tests of column footings reported in 1948 shows that the use of present design methods, involving shearing stress at a distance d around the column perimeter, does not lead to a consistant factor of safety with respect to shearing failures. A shearing stress at a distance zero around the column was found to be a better measure of shearing strength. The ultimate value of this stress is given as a functionof concrete strength and the relative intensity of flexural loading combined with the shearing force. On this basis a new design approach is discussed with respect to the shearing strength of column footings.