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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: Helicoidal Staircases of Reinforced Concrete
Author(s): Victor R. Bergman
Publication: Journal Proceedings
Appears on pages(s): 403-412
Keywords: no keywords
Abstract:The analysis of a helicoidal staircase involves torsional moments as well as bending moments and shears and is consequently somewhat more difficult than that of a straight staircase. However, if the staircase is reduced to its horizontal projection, the problem becomes quite tractable since it resolves itself into that of a Axed-end, curved beam loaded normal to its plane of curvature. This paper covers determination of the bending moment, torsional shearing stresses, shear reinforcement, longitudinal reinforcement, and design at the supports.
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