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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: Behavior and Design of Multistory Building Frames of Unbonded Post-Tensioned Concrete
Author(s): James E. Wailer and John E. Zimmerman
Publication: Journal Proceedings
Appears on pages(s): 357-362
Keywords: continuity (structural); flexural strength; frames; post-tensioning;structural design; unbonded prestressing.
Abstract:Designing post-tensioned multistory building frames frequently results in significant construction cost savings. The reluctance of structural engineers, clients, and developers to employ post-tensioning in building designs is often the result of misunderstanding the behavior and design requirements of this type of structure rather than the extra cost entailed in contractor, labor, and material evaluation as compared with other conventional construction methods. This paper illustrates the structural behavior of post-tensioned building frames, presents a moment-balancing design procedure for unbonded, draped, post-tensioned tendons, and discusses several aspects of primary and secondary post-tensioning forces which must be considered to properly design mild steel reinforcement in accordance with ACI 318-77.
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