The Most Commonly Used Strength of Concrete for the Slab-

Multiple Choice

The most commonly used strength of concrete for the slab- on- ground in concrete tilt- up wall buildings is

A) 6,000 psi.
B) 5,000 psi.
C) 4,000 psi.
D) 3,000 psi.
E) 2,000 psi.