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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: Ultimate Strength in Shear of Simply-Supported Prestressed Concrete Beams Without Web Reinforcement
Author(s): E. M. Zwoyer and C. P. Siess
Publication: Journal Proceedings
Appears on pages(s): 181-200
Keywords: no keywords
Abstract:Tests were made on 34 simply-supported prestressed concrete beams without web reinforcement. All beams were rectangular in cross section and were reinforced with straight wires bonded throughout their length. Variables included the prestress, the percentage and type of steel, the concrete strength, and the ratio of shear-span to depth of beam. On the basis of the results obtained, an hypothesis of failure was developed which is consistent with the phenomena observed in the tests and which provides the basis for a method of analysis capable of predicting the strength in shear of beams similar to those tested. This method of computing shear strength can be applied also to beams of ordinary reinforced concrete, and comparisons with the results of tests show reasonably good agreement.
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