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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: Construction of Chicago's Initial System of Subways
Author(s): V. E. Gunlock
Publication: Journal Proceedings
Appears on pages(s): 497-508
Abstract:The construction of subways in Chicago by tunneling methods has been a moot question for many years. Proof that this can be accomplished now exists. These subways have been constructed bv tunnelina methods thrbug h Chicago’s underlying ‘stratum of soft blue clay. The paper describes the two methods used in the subway tunnel construction, mentions some of the special problems encountered, describes methods of placing the concrete, and explains-the control exercised to insure sound concrete in the finished structure.
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