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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: Establishing Tolerances in Concrete
Author(s): Dean E. Stephan, Jr., and Alan Murk
Publication: Journal Proceedings
Appears on pages(s): 208-211
Keywords: architectural concrete; beams (supports);camber;concrete construction; economics; formwork (construction);precast concrete;slipform construction; specifications;tolerances (mechanics) ; walls.
Abstract:The specification writer usually designates tolerances for a structure based on standardized specifications on file or appropriate ACI specifications without much thought to the actual tolerances required. This can have a significant cost impact on the project. A detailed field investigation of tolerances for three slipformed structures is presented which indicates that tolerances from "Specifications for Structural Concrete for Buildings (ACI 301-72) (Revised 1975)" should not be applied to slipforming. The authors discuss tolerances required for slipform construction, job site structural and architectural precast concrete, slabs over precast concrete beams, and make recommendations for realistic tolerances based on field experience.
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