Question

4. (5 pts) A rectangular concrete slab, 10 ft x 10 ft, rests on the surface of a soil mass. The load on

the slab is 450,000 lb. Determine the vertical stress increase at a depth of 6.25 ft under point A.

Top View

10 ft

Section View

10

6.5 ft

A

3.5 ft

6.25 ft

Question image 1