Proposed Specification for Structural Steel Beams with Web Openings
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VIEW THE REPLYPublication: Journal of Structural Engineering
Volume 118, Issue 12
Abstract
This specification covers the design of composite and noncomposite beams with web openings. The specification follows load and resistance factor design (LRFD) philosophy, and may be adopted as a chapter in a larger specification. Basic design procedures involve determination of maximum nominal flexural capacity, maximum nominal shear capacity, and interaction of flexure and shear. The maximum nominal flexural capacity is calculated using standard strength procedures for both composite and noncomposite sections, taking into account the loss of material within the web. The maximum nominal shear capacity is based on a simplified four‐hinge mechanism, with one hinge at each corner of the opening. The general design approach is identical for composite and noncomposite members, with or without opening reinforcement. The design procedures apply only to compact sections. Additional criteria are applied to ensure ductile behavior and performance in accordance with the design expressions. The procedures apply to both rectangular and circular openings. Criteria for placement of concentrated loads and positioning of openings are included, as are detailing requirements for opening and slab reinforcement.
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References
1.
Load and resistance factor design manual of steel construction. (1986). 1st Ed., American Institute of Steel Construction (AISC), Chicago, Ill.
2.
Load and resistance factor design specification for structural steel buildings. (1986) American Institute of Steel Construction (AISC), Chicago, Ill.
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Copyright © 1992 ASCE.
History
Published online: Dec 1, 1992
Published in print: Dec 1992
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