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The depth-to-thickness ratio of web connected to flanges along one longitudinal edge only when transverse stiffeners are not provided is _____ to meet serviceability criteria.

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The depth-to-thickness ratio of web connected to flanges along one longitudinal edge only when transverse stiffeners are not provided is _____ to meet serviceability criteria.

(a) >180ε

(b) ≥90ε

(c) ≤90ε

(d) >90ε

I got this question in an international level competition.

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

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The correct answer is (c) ≤90ε

Best explanation: When transverse stiffeners are not provided, the depth-to-thickness ratio of web connected to flanges along one longitudinal edge only is ≤ 90ε and when web connected to flanges along both longitudinal edges is ≤ 200ε to meet the serviceability criteria.

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