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 3,100 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 6.547 in., determine the force in the compression reinforcement, Cs.

You are considering a beam design that has dimensions of b = 16 in., h = 30 in., and d = 27.5 in. The beam is singly reinforced with all of the reinforcement in a single row. The concrete strength is 3,400 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?

Simply supported beams loaded with only gravity loads develop tension cracks along the bottom of the beam.

The Mueller-Breslau principle is not helpful for structures that will be analyzed via computer software packages.

In a singly-reinforced concrete beam, the centroid of the compression zone is located a distance _______ from the fiber of maximum compressive strain.

A classmate has suggested a beam design that has dimensions of b = 12 in., h = 22 in., and d = 19.5 in. and is reinforced with 4 No. 14 bars. Assuming a cover of 1.5 in. and a stirrup diameter of 0.5 in., does the reinforcement fit within a single row as suggested?

Architects are legally limited to design, and engineers are legally limited to analysis.

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

Concrete forms must be strong enough to support the wet concrete plus construction loads used in the casting and finishing process.

A beam has dimensions of b = 20 in., h = 12 in., and d = 9.5 in. and is reinforced with 4 No. 9 bars. The concrete strength is 3,800 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 4.371 in., does the reinforcement yield?