Question

Intermediate vertical stiffeners are provided in plate girders to prevent

• A. local buckling
• B. web buckling
• C. excessive deflection
• D. flange buckling

Hint:

To prevent web buckling in plate girders, use intermediate vertical stiffeners at appropriate intervals.

Answer 1

The Correct Option is B

Step 1: Understanding the function of stiffeners. - Plate girders are used for large-span structures where bending stresses are significant. - Intermediate vertical stiffeners are used to prevent web buckling, which occurs due to shear forces. Step 2: Types of buckling in plate girders. - Local buckling occurs in thin sections but is controlled by plate thickness. - Flange buckling is prevented by horizontal stiffeners. - Excessive deflection is controlled by the overall section design. - Web buckling, which happens under high shear forces, is controlled by intermediate vertical stiffeners. Thus, the correct answer is (B) web buckling.