TECHNICAL PAPERS
Feb 1, 1985

On the Computation of Slab Effective Widths

Publication: Journal of Structural Engineering
Volume 111, Issue 2

Abstract

An approximate closed‐form solution is presented for the computation of effective widths of floor slabs in laterally‐loaded multi‐story buildings. The resulting formula yields answers in good agreement with existing numerical techniques throughout the entire range of slab aspect ratios and column sizes found in practice. Since the necessary computations consist essentially of a summation of two series and thus, can readily be performed on a programmable calculator, the proposed method is especially suited for quick estimates of effective width at the preliminary design stage. The proposed method can easily be extended to anisotropic slabs and to boundary conditions other than those usually assumed in analyses of this type.

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References

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Aalami, B., “Moment‐Rotation Relation between Column and Slab,” Journal of the American Concrete Institute, Vol. 69, No. 5, May, 1972, pp. 263–269.
2.
Allen, F. H., and Darvall, P., discussion on “Slab Effective Width for Equivalent Frame Analysis,” by D. A. Pecknold, Journal of the American Concrete Institute, Vol. 72, No. 10, Oct., 1975, pp. 583–586.
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Allen, F. H., and Darvall, P., “Lateral Load Equivalent Frame,” Journal of the American Concrete Institute, Vol. 74, No. 7, July, 1977, pp. 294–299.
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Go to Journal of Structural Engineering
Journal of Structural Engineering
Volume 111Issue 2February 1985
Pages: 363 - 377

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Published online: Feb 1, 1985
Published in print: Feb 1985

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Authors

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Milija N. Pavlović
Dept. of Civ. Engrg., Imperial Coll., London SW7 2BU, England
Steven M. Poulton
French Kier Construction Ltd., Sandy, Bedfordshire SG19 2BD, England

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