If φVc = 75 kip and Vu = 55 kip, are stirrups required?

Assuming Vs exceeds 4sqrt(f’c)bwd, the maximum spacing for vertical stirrups in the following beam is _____. Let d = 57 in., w = 49.5 in., and t = 5 in. There are five No. 9 longitudinal tension bars and No. 3 stirrups at 7 in. o.c.

A 115-mm-long beam supports a load of P = 26 N at midspan. The cross section is rectangular with width b = 30 mm and height h = 45 mm. Determine the magnitude of the horizontal shear stress at the centroid of the cross section.

Brittle materials fail due to maximum shear stress rather than principal stresses.

A simply-supported beam has a 5 kip/ft uniformly-distributed load over the left half of its 9-ft span. What is the magnitude of the maximum shear force in the beam?

A simply-supported beam has a 2 kip/ft uniformly-distributed load over the entire 12-ft span. What is the magnitude of the shear force at midspan?

For a beam with stirrup hooks, the free end of the bar must extend at least _____ from the hook. Assume b = 13 in., d = 22 in., and that there are four No. 8 longitudinal tension bars and No. 5 stirrups at 7 in. o.c. The stirrup hooks are 135°.

Shear-failure loads are more variable than flexure-failure loads.

Use ACI 318-14 Table 25.4.2.2 to determine the development length for the straight tension bars (no hooks) in a rectangular beam with b = 16 in. and d = 22 in., four uncoated No. 9 Grade 60 bars placed in the top of the beam, and No. 4 Grade 60 stirrups located every 10 in. along the span. Assume 4,000-psi lightweight concrete and a clear cover of 2 in.

ACI 318 does not provide rules for designing hanger reinforcement.