Question

According to Polish and Tokar brick masonry will crack, when the unit elongation amounts to ___________

(a) 0.5

(b) 0.005

(c) 1.0

(d) 0.05

The question was posed to me in unit test.

I need to ask this question from Bearing Capacity topic in portion Bearing Capacity of Geotechnical Engineering II

Answer 1

Right choice is (b) 0.005

Easiest explanation: According to Polishin and Tokar (1957), brick masonry will crack due to differential settlement when the unit elongation amount to 0.005.