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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: ACI Standard Specification for the Design and Construction of Reinforced Concrete Chimneys (ACI 505-54)
Author(s): ACI Committee 505
Publication: Journal Proceedings
Appears on pages(s): 1-48
Keywords: no keywords
Abstract:This specification sets forth recommended loadings, including provision for both wind and earthquake, for the design of reinforced concrete chimneys and recommended methods for determining the stresses in the concrete and rein-forcement resulting from these loadings. The method of analysis includes de-termination of the stresses at horizontal cross sections where flue or other openings occur as well as at sections where the cross section is an annular ring. Charts containing curves to aid in the rapid solution of the specified formulas are included. While the method of analysis applies primarily to chimneys, it can be used for other hollow circular cross sections, with or with-out openings, where the shell thickness is small in proportion to the diameter. Formulas are recommended for determining the temperature gradient through the concrete resulting from the difference in temperature of the gases inside the chimney and the surrounding atmosphere, together with methods for determining the stresses in the concrete and reinforcement both vertically and circumferentially due to the temperature gradient through the concrete. Formulas for combining the stresses due to dead, wind, and earthquake loads with the stresses due to temperature are included in the specification, together with recommended allowable stresses in the concrete and reinforce-ment for the various stress combinations. The specification covers the mixing and placing of the concrete by reference to the ACI "Building Code Requirements for Reinforced Concrete" (ACI 318) with supplemental provisions to take care of the special requirements for concrete chimneys. The specification also includes recommended practice for linings for con-crete chimneys, where required, for lightning protection, access ladders, and other chimney accessories. In an appendix many of the equations used are derived and the assumptions on which they are based are given.
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