Question

Which of the below type of timber has Young’s Modulus greater than 9800 N/mm^2, but less than 12600 N/mm^2?

(a) Average timber

(b) Very good timber

(c) Good timber

(d) Light timber

I have been asked this question in an online interview.

This intriguing question originated from Classification of Timber in division Materials for Construction of Basic Civil Engineering

Answer 1

The correct choice is (c) Good timber

Easiest explanation: Average timber has Young’s Modulus (E) varying between 6600 N/mm^2 and 9800 N/mm^2.  Very good timber has E greater than 12600 N/mm^2.  There is no classification as light timber based on E.