Question

The depth-to-thickness ratio of web when only transverse stiffeners are provided and c < 0.74d, where c is clear distance between stiffeners and d is depth of web is_____ to meet serviceability criteria

(a) ≤ 200 εw

(b) ≥ 270 εw

(c) > 200 εw

(d) ≤ 270 εw

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This interesting question is from Proportioning of Web & Flanges topic in portion Gantry Girders, Design of Plate Girders & Industrial Buildings of Design of Steel Structures

Answer 1

The correct answer is (d) ≤ 270 εw

To explain: For serviceability criteria, when only transverse stiffeners are provided, the depth-to-thickness ratio of web should be ≤ 270 εw when c < 0.74d and c/tw ≤ 200 εw, when 0.74d ≤ c ≤d, where c is clear distance between stiffeners and d is depth of web, εw = √(250/fyw), fyw is yield stress of web.