The value of τb in the nominal shear strength equation according to simple post-critical method is given by(a) fyw / √ λw(b) fyw/λw(c) fyw/λw²(d) fyw/(√3 λw²)The question was asked in final exam.The doubt is from Web Panel Subjected to Shear in section Gantry Girders, Design of Plate Girders & Industrial Buildings of Design of Steel Structures

The value of τb in the nominal shear strength equation according to s

1.	The value of τb in the nominal shear strength equation according to simple post-critical method is given by(a) fyw / √ λw(b) fyw/λw(c) fyw/λw²(d) fyw/(√3 λw²)The question was asked in final exam.The doubt is from Web Panel Subjected to Shear in section Gantry Girders, Design of Plate Girders & Industrial Buildings of Design of Steel Structures
Answer» CORRECT answer is (d) fyw/(√3 λw²) The explanation is: The value of τb in the nominal SHEAR strength EQUATION according to simple post-critical method is given by τb = fyw/√3 for λw ≤0.8, [1-0.8(λw -0.8)](fyw/√3) for 0.8 < λw<1.2, fyw/(√3 λw²) for λw ≥1.2, where fyw is yield strength of web, λw is non-dimensional web SLENDERNESS ratio for shear BUCKLING stress.

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