Design Aids For Built-up I-shaped Beams With Slender Webs

摘要

With the advent of the 13th Edition AISC Steel Construction Manual (AISC, 2005a), hereafter referred to as thernAISC Steel Manual, available strength design aids have been prepared for use in the design of built-up I-shaped beams with slender webs, with or without stiffeners, for allowable strength design (ASD) and load and resistance factor design (LRFD) methodologies.rnWhile the application of slender web built-up sections is not as common as rolled shapes, their use is warranted under conditions of economy, specialization or unusual constraints. Section F4 of the Specification for Structural Steel Buildings (AISC, 2005b), hereafter referred to as the AISC Specification, governs the flexural design of beams with noncompact webs for doubly or singly symmetric I-shaped members; however, Section F5 provides a simplified and conservative approach to the flexural design of beams with compact, non-compact, or slender webs by ignoring the torsional properties of the cross section.