Rectangular Footing Dimensions to Develop the Plastic Moment Capacity of RC Bridge Columns
Publication: Journal of Bridge Engineering
Volume 23, Issue 7
Abstract
This technical note presents charts that allow bridge engineers to quickly estimate the minimum footing dimensions, as controlled by the nominal (or ultimate) bearing capacity of the supporting soil, to develop the biaxial plastic moment capacity of corresponding columns. The design aids are applicable to rectangular, circular, and oval reinforced concrete (RC) columns with cross-sectional dimensions of up to 2.44 m (8 ft), longitudinal reinforcement ratios from 1 to 2%, transverse reinforcement ratios from 0.4 to 1.2%, concrete compressive strengths () from 28 (4) to 42 MPa (6 ksi), and axial load levels between 0.05 and 0.2.
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Published In
Journal of Bridge Engineering
Volume 23 • Issue 7 • July 2018
Copyright
© 2018 American Society of Civil Engineers.
History
Received: Jul 14, 2017
Accepted: Dec 21, 2017
Published online: Apr 30, 2018
Published in print: Jul 1, 2018
Discussion open until: Sep 30, 2018
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