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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: New Bearings for Washington Metro
Author(s): J. Valvezan, D. Gilstad, and F. Farhangi
Publication: Special Publication
Appears on pages(s): 299-308
Keywords: bearings; box beams; bridges (structures); girders; subways; Construction
Abstract:After 18 years of service, the pot bearings of the New Carrolton Route Section D-10, part of the Washington, D. C. Metropolitan Area Transit Authority's metro system, are being replaced. Access to the bearings is extremely limited because the bearings are architecturally sealed behind cover plates within box girders. This paper highlights the need to design bridges with access for maintenance, inspection, and bearing replacement. It also discusses issues relating to the long term performance of bearings.
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