Compute φVn for the cross section shown. Assume f’c = 3,000 psi, fyt = 40,000 psi, b = 14 in., d = 25 in., and that there are four No. 8 longitudinal tension bars and No. 3 stirrups at 12 in. o.c.

The strength reduction factor is greater for flexure than for shear because flexure-failure loads are more variable than shear-failure loads.

Web reinforcement is normally provided to ensure that the beam reaches the full _______ capacity.

Mi sobrino pequeño va a en los Pirineos cuando visita España.

You are considering a beam design that has dimensions of b = 16 in., h = 24 in., and d = 21.5 in. The beam is singly reinforced with all of the reinforcement in a single row. The concrete strength is 7,600 psi, and the yield strength of the reinforcement is 60,000 psi. What cross-sectional area of reinforcement is needed to achieve a strain in the reinforcement of 0.0075?

A simply-supported beam has a 5 kip/ft uniformly-distributed load over the left half of its 11-ft span. What is the magnitude of the maximum shear force in the beam?

A concrete cover of at least one bar diameter is required to sufficiently bond the reinforcement to the concrete.

Flexural stiffness is inversely related to span length. Therefore, a higher percentage of the load applied to floor panels is carried in the short span direction as compared to the long span direction.

If a beam is supported by a girder of essentially the same depth, the compression fans that form in the supported beam tend to push the bottom off the supporting beam.

Adhesion and friction between the concrete and reinforcement are quickly lost when the bar is loaded in tension, because the diameter of the bar _______ due to Poisson’s ratio.