Compression-development lengths are considerably shorter than tension-development lengths, because some force is transferred to the concrete by the bearing at the end of the bar.

Map cracking can be prevented by proper mix design and by preventing rapid drying of the surface during the first hour or so after placing.

Bricks expand with time due to an increase in _______ above their kiln-dried condition.

What is the easiest way to test the bond strength of bars in a laboratory?

The actual size of a hook in a hooked anchorage is frequently critical in detailing a structure.

There are no ACI Code requirements placed on structural integrity of cast-in-place reinforced concrete construction, precast construction, and prestressed concrete slabs.

Determine the size modification factor, ψs, for a rectangular beam with b = 17 in. and d = 21 in., five uncoated No. 7 Grade 60 tension-reinforcement bars placed in the bottom of the beam, and No. 4 Grade 40 stirrups located every 10 in. along the span. Assume 8,000-psi lightweight concrete and a clear cover of 1.75 in.

Bricks expand with time due to an increase in _______ above their kiln-dried condition.

Determine the epoxy modification factor, ψe, for a rectangular beam with b = 17 in. and d = 22 in., five epoxy-coated No. 8 Grade 60 tension-reinforcement bars placed in the top of the beam, and No. 3 Grade 40 stirrups located every 10 in. along the span. Assume 4,000-psi normal-weight concrete and a clear cover of 2 in.

In a pull-out test, a concrete cylinder containing the bar is placed on a stiff plate and a jack is used to push the bar into the cylinder.