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The nominal shear strength according to simple post-critical method is given by

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in Design of Steel Structures by (962k points)
The nominal shear strength according to simple post-critical method is given by

(a) Av

(b) Avτb

(c) τb

(d) Av /τb

This question was posed to me in exam.

My doubt is from Web Panel Subjected to Shear topic in chapter Gantry Girders, Design of Plate Girders & Industrial Buildings of Design of Steel Structures

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Right choice is (b) Avτb

To explain I would say: Simple post-critical method based on the shear buckling strength can be used for web of I-section girders, with or without intermediate transverse stiffeners, provided that web has transverse stiffeners at the supports. The nominal shear strength is given by Vn=  Avτb, where Av = area of web, τb = shear stress corresponding to web buckling.

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