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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: Plane-Frame Analysis Applied to Slabs
Author(s): W. Gamble
Publication: Special Publication
Appears on pages(s): 119-130
Keywords: columns; frame method; lateral loads; slabs
Abstract:The Equivalent Frame Method (EFM) of the ACI Code was developed when the predominate method of structural analysis was the Moment Distribution method. It was furthermore developed primarily for vertical loadings. While there exist special-purpose programs intended for slab analysis using the EFM, the purpose of this paper is to present a method of using the EFM approach with an ordinary plane-frame program. This can be accomplished for the vertical loading case by the use of a substitute moment of inertia, Iec, for the columns. For the lateral loading case, the beam which replaces the slab in the analysis has to have a reduced moment of inertia, with the reduction having two parts. One part is to reflect the state of cracking, with the second part being an "effective width" factor which depends on the panel shape.
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