Question

As per IS 800-2007, the shear force does not influence the bending moment capacity when the factored design shear force does not exceed the design shear strength by

• A. 20\%
• B. 40\%
• C. 60\%
• D. 80\%

Hint:

- When designing beams as per IS 800:2007, ensure that factored shear force remains below 60\% of the design shear strength to avoid reduction in bending moment capacity.

Answer 1

The Correct Option is C

Step 1: Understanding the influence of shear force on bending moment capacity. - According to IS 800:2007, when the factored design shear force does not exceed 60\% of the design shear strength, it does not reduce the bending moment capacity of the section. - Beyond this limit, shear effects need to be accounted for in bending moment capacity calculations. Step 2: Importance in design considerations. - If the shear force is within the 60\% limit, the plastic moment capacity remains unaffected. - If it exceeds 60\%, the available bending capacity is reduced due to combined shear and bending effects. Thus, the correct answer is (C) 60\%.