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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: Chimney Design for Two Layers of
Reinforcement and Concentrated Corbel Moments
Author(s): Marius Diver and Robert W. Pierce
Publication: Journal Proceedings
Appears on pages(s): 701-708
Keywords: bending moments: chimneys: compressive strength; loads (forces): modulus of elasticity: reinforced concrete: reinforcing steels; specifications: structural analysis; structural design; temperature: tensile stress: wind pressure.
Abstract:ACI 307-69 is a most valuable document, but it is lacking in two important aspects of modern design of large chimneys. These limitations are that it treats only the case of a single layer of reinforcing, and that it provides no means of incorporating the effects of locally concentrated corbel moments into a general design. This paper expands the standard to incorporate two layers of reinforcing, and introduces an extra loading case, resulting from corbel moments. Final expressions are given in a form comparable to that in ACI 307-69, and these are expressed graphically where it is valuable to do so. A flow chart and a fully worked example are also presented to illustrate utilization of the method proposed. This method differs from that used in ACI 307-69 primarily in that a clear distinction is made between various states of stress of a design section, to facilitate a simple superposition of loading cases under commonly encountered design situations.
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