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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: Relationship Between Moment Capacity at Flexural Cracking and at Ultimate in Prestressed Concrete Beams
Author(s): lfedayo O. Oladapo
Publication: Journal Proceedings
Appears on pages(s): 863-875
Keywords: beams (structural);cracking (fracturing);moments;prestressed concrete; structural analysis;ultimate strength method (structural).
Abstract:Presents an analytical study of the variation of the ratio of cracking moment to ultimate moment in prestressed concrete beams. The effect, on the ratio, of variations in the section properties, the limiting tensile stress of concrete and the level of prestress were investigated. The analysis shows that there is a useful range for the steel ratio and that a limitation is necessary for the maximum as well as the minimum steel ratio. It is also shown that a direct control of cracking can be carried out, by stipulating a specified value for the ratio of cracking moment to ultimate moment and permissible stresses can be dispensed with in so far as they are indirect controls of cracking.
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