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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: A Design Perspective on Punching Shear
Author(s): S.D.B. Alexander and N.M. Hawkins
Publication: Special Publication
Appears on pages(s): 97-108
Keywords: flexural reinforcement; punching shear; structural design
Abstract:The ACI Code design equation for concentric punching shear is often criticized for failing to account for the effect of flexural reinforcement. This criticism is based on the poor performance of the code equation as a predictor of test results. However, in thecontext of design, the code works as well as any detailed analytical model available, witha fraction of the computation effort. This is because for non-prestressed slabs the codeequation correctly identifies the transition between flexural failure and shear failure,assuming the slab has been correctly designed for flexure. It is concluded that a strongargument can be made for retaining the current equation for concentric punching.
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