Question

Plastic modulus for a circular section of diameter \( d \) is

• A. \( \frac{d^3}{3} \)
• B. \( \frac{d^3}{6} \)
• C. \( \frac{d^2}{2} \)
• D. \( \frac{2d^3}{3} \)

Hint:

For circular sections, use the plastic modulus formula \( \frac{d^3}{6} \) to find the section’s plastic bending strength.

Answer 1

The Correct Option is B

The plastic modulus for a circular section is calculated as \( \frac{d^3}{6} \), where \( d \) is the diameter of the section. This formula is used for determining the plastic bending capacity of a circular section. Hence, the correct answer is \( \frac{d^3}{6} \).