Where is Shear Reinforcement Required? Review of Research Results and Design Procedures

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					 ACI STRUCTURAL JOURNAL                                                                                   TECHNICAL PAPER
Title no. 105-S55


Where is Shear Reinforcement Required?
Review of Research Results and Design Procedures
by Michael P. Collins, Evan C. Bentz, and Edward G. Sherwood

This paper reviews the past 60 years of research on shear behavior
with attention paid to the behavior of beams ranging from short-
span deep beams to members controlled by flexure. A database of
1849 tests is included and conclusions based on these tests are
made concerning the safety of the shear provisions currently in use
in North America. The paper concludes that using the current ACI
shear provisions to decide where 
				
DOCUMENT INFO
Description: This paper reviews the past 60 years of research on shear behavior with attention paid to the behavior of beams ranging from short-span deep beams to members controlled by flexure. A database of 1849 tests is included and conclusions based on these tests are made concerning the safety of the shear provisions currently in use in North America. The paper concludes that using the current ACI shear provisions to decide where shear reinforcement is required can be unconservative for members with larger effective depths, or higher stresses in the longitudinal reinforcement. Improvements to the ACI Code are proposed to mitigate these weaknesses. The paper also demonstrates that the AASHTO-LRFD and Canadian CSA sectional and strut-and-tie provisions provide a more uniform level of safety for all member types. [PUBLICATION ABSTRACT]
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