The d/tw should be ___ to avoid buckling of compression flange into web when transverse stiffeners are not provided(a) ≥ 500 εf^2(b) ≤ 345 εf^2(c) ≥ 345 εf^2(d) ≤ 500 εf^2This question was posed to me in a national level competition.My doubt stems from Proportioning of Web & Flanges topic in portion Gantry Girders, Design of Plate Girders & Industrial Buildings of Design of Steel Structures

The d/tw should be ___ to avoid buckling of compression flange into we

1.	The d/tw should be ___ to avoid buckling of compression flange into web when transverse stiffeners are not provided(a) ≥ 500 εf^2(b) ≤ 345 εf^2(c) ≥ 345 εf^2(d) ≤ 500 εf^2This question was posed to me in a national level competition.My doubt stems from Proportioning of Web & Flanges topic in portion Gantry Girders, Design of Plate Girders & Industrial Buildings of Design of Steel Structures
Answer» The correct OPTION is (b) ≤ 345 εf^2 The best I can explain: To avoid buckling of COMPRESSION flange into web when transverse stiffeners are not PROVIDED, d/tw ≤ 345 εf^2, where d is depth of web, εf = √(250/fyf), fyf is YIELD stress of compression flange.

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