Title: Ultimate Shear Strength of Reinforced Concrete Flat Slabs, Footings, Beams, and Frame Members Without Shear Reinforcement*

Author(s): Charles S. Whitney

Publication: Journal Proceedings

Volume: 54

Issue: 10

Appears on pages(s): 265-298

Keywords: no keywords

DOI: 10.14359/11440

Date: 10/1/1957

Abstract:
The method for estimating shear strength proposed in this paper is radically different from that currently in use, but it appears to be well supported by the results of tests which have covered a wide range of proportions and concrete and steel strengths. The conventional shear formula V = V/bJki! = lc fE is not suitable for use because the shear strength is not a simple function of concrete strength, but depends largely on the amount of flexural reinforcement and its efficiency. Also tests show that because of bond failure due to splitting of concrete, the flexural reinforcement cannot be fully effective if it is too closely spaced.