Question

Which of the following causes web buckling in plate girder?

(a) diagonal tension

(b) diagonal compression

(c) diagonal tension and diagonal compression

(d) neither diagonal tension nor diagonal compression

I have been asked this question during an online interview.

I would like to ask this question from Plate Girders & General Considerations topic in division Gantry Girders, Design of Plate Girders & Industrial Buildings of Design of Steel Structures

Answer 1

The correct choice is (b) diagonal compression

The explanation is: The principal planes will be inclined to longitudinal axis of the member at high shear locations in the girder web. Along the principal planes, the principal stresses will be diagonal tension and diagonal compression. Diagonal tension does not cause any problem but diagonal compression causes the web to buckle in the direction perpendicular to its action.