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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: 307-684 Long Spans in Post-Tensioned Architectural
Author(s): Raymond S. Clark and John Zils
Publication: Concrete International
Appears on pages(s): 07-12
Keywords: architectural concrete; concrete construc-tion;
framing systems; high-rise buildings; post-tension-ing;
Abstract:The structural design and detailing of a long-span post-tensioned framing system in exposed aggregate architectural concrete for a high-rise building is discussed. As in any architectural concrete structure, appropri-ate attention was given to the selection of materials, use of admixtures, and the development of reliable mix proportions. Formwork and forming systems were critical in achieving uniform concrete surfaces. Concrete finishes and techniques of achieving the finishes were consistent throughout the structure due to a comprehensive quality control program. Proper detailing was required to insure strength and serviceability of the structure. Additional special detailing of post-tensioned anchorages was required to provide for interior stressing of all members, thereby eliminating the need for anchor pockets at the exterior architectural surfaces. Construction sequencing played an important role in establishing structural design criteria.
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