Design Tables for Cylindrical Concrete Water Tank with Annular Footing
Publication: Practice Periodical on Structural Design and Construction
Volume 26, Issue 1
Abstract
Water storage and wastewater treatment tanks are usually cylindrical in shape and made of reinforced cement concrete. These tanks are founded at the lowest hydraulic level to facilitate the treatment and storage process. For the designing of such tanks, the governing design forces in the cylindrical wall should be accurately assessed so that the tank satisfies the economic feasibility and serviceability requirements. For transmitting hydrostatic pressure acting on the tank wall into corresponding hoop tension and bending moment, designers make use of design tables offered by the Portland Cement Association (PCA). PCA assumes ideal conditions at wall bottom joints, such as pinned or rigid, but neither considers the effects of annular footing nor soil-structure interaction. At present, there are no design tables available for cylindrical tanks with annular footing. In this paper, using finite element analysis (FEA), the influence of the soil-structure interaction on design forces in the tank wall and the annular footing is discussed. Further, design tables are developed for hoop tension and bending moment for tank wall with annular footing on firm strata.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
References
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Published In
Practice Periodical on Structural Design and Construction
Volume 26 • Issue 1 • February 2021
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Jun 17, 2020
Accepted: Oct 14, 2020
Published online: Dec 12, 2020
Published in print: Feb 1, 2021
Discussion open until: May 12, 2021
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