If φVc = 43 kip and Vu = 54 kip, are stirrups required?

Compute φVn for the cross section shown. Assume f’c = 4,000 psi, fyt = 60,000 psi, b = 10 in., d = 26 in., and that there are four No. 7 longitudinal tension bars and No. 4 stirrups at 8 in. o.c.

Compute φVn for the cross section shown. Assume f’c = 4,000 psi, fyt = 40,000 psi, d = 22 in., w = 16.5 in., t = 4 in., and that there are four No. 8 longitudinal tension bars and No. 3 stirrups at 6 in. o.c.

For a beam with stirrup hooks, the free end of the bar must extend at least _____ from the hook. Assume b1 = 35 in., b2 = 15 in., d1 = 6 in., d2 = 27 in., and that there are three No. 6 longitudinal tension bars and No. 4 stirrups at 9 in. o.c. The stirrup hooks are 90°.

Which of the following is considered one of the cognitive learning styles?

A continuous beam’s flexural reinforcement must extend at least _____ from the point where it is no longer needed to resist tension. Assume f’c = 4,000 psi, fyt = 40,000 psi, b1 = 21 in., b2 = 11 in., d = 27 in., h1 = 6 in., h2 = 17 in., h3 = 9 in., and t = 6 in. There are four No. 8 longitudinal tension bars and No. 4 stirrups at 10 in. o.c.

A beam has dimensions of b = 14 in., h = 28 in., d’ = 2.5 in., and d = 25.5 in. It is reinforced with 2 No. 5 bars on the compression side and 5 No. 8 bars on the tension side. The concrete strength is 4,000 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 5.216 in., determine the strain in the compression reinforcement, ε’s.

A substance that dissociates in water to form cations and anions is called an electrolyte.

The height of available chairs may control a slab’s concrete compression strength.

Compute φVn for the cross section shown. Assume f’c = 4,000 psi, fyt = 60,000 psi, b = 14 in., d = 23 in., and that there are four No. 7 longitudinal tension bars and No. 4 stirrups at 9 in. o.c.