Research Article
Mar 1972

Tests on Beams with Reinforced Web Openings

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Publication: Journal of the Structural Division
Volume 98, Issue 3

Abstract

Sixteen elastic tests and three ultimate load tests on A36 steel W 12x45 beams with reinforced rectangular openings in the web at middepth are described and analyzed. The experimental variables were the moment-shear ratio at the opening and the details of the horizontal reinforcing bars which were used above and below the openings. It is concluded that fillet welds placed on only one side of the reinforcing bars provided an adequate connection to the web, both for one and two-sided reinforcing bars, and that the use of reinforcing bars on only one side of the web had no interpretable effect on the strength and behavior of the beams. It is also concluded that designing the extension of the reinforcing bars beyond the edges of the opening to develop the strength of the bars in the welds is a reasonable and satisfactory approach to this detail.

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Published In

Journal of the Structural Division
Volume 98Issue 3March 1972
Pages: 611 - 632

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Published in print: Mar 1972
Published online: Feb 1, 2021

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Peter B. Cooper, M.ASCE
Assoc. Prof. of Civ. Engrg., Kansas State Univ., Manhattan, Kan.
Robert R. Snell, M.ASCE
Prof. of Civ. Engrg., Kansas State Univ., Manhattan, Kan.

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