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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: Camber Requirements for Pretensioned
Author(s): Donald R. Buettner and James R. Libby
Publication: Concrete International
Appears on pages(s): 66-72
Keywords: building codes; camber; cracking (fracturing);
creep properties; deflection; modulus of elasticity; moments
of inertia; prestressed concrete; pretensioning; shrinkage;
Abstract:Camber in pretensioned prestressed concrete members has been found to be both variable and unpredictable in many instances. Considerable problems can result in the field when actual cambers do not agree with anticipated (calculated) values or when cambers vary markedly between adjacent elements in a structure. The paper presents field data illustrating the variability problem, a calculation procedure and example to illustrate a method and suggests ACI Building Code requirements which include a limit on the difference between anticipated (calculated) and actual cambers.
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