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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: The Design Of Concrete Arches In Allegheny County, Pennsylvania
Author(s): G. S. Richardson
Publication: Journal Proceedings
Appears on pages(s): 637-652
Abstract:The design of six concrete arches on the Ohio River Boulevard similar in detail is compared with that of the George Westinghouse Bridge, consisting of five arch spans with the central one the longest constructed in America. Celluloid model studies of the latter bridge showing the effect of various locations of expansion joints and interaction of arch rib and superstructure made with Beggs’ deformeter equipment are described. The relation of dead, live, tern erature and shrinkage stresses is discussed and the inf uence of ratio of depth l of rib to span on these stresses is considered.
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