Question

A steel plate is 400 mm wide and 10 mm thick. A rivet of nominal diameter 20 mm is driven. The net sectional area of the plate is:

• A. $3800 \text{ mm}^2$
• B. $3780 \text{ mm}^2$
• C. $3785 \text{ mm}^2$
• D. $4215 \text{ mm}^2$

Hint:

The distinction between nominal diameter and gross/hole diameter is crucial in steel design. Always add 1.5 mm for rivets up to 25 mm diameter.

Answer 1

The Correct Option is C