Which symbol represents the strain in the tension reinforcement of a reinforced concrete beam?

A beam has dimensions of b = 20 in., h = 10 in., and d = 7.5 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?

You are considering a beam design that has dimensions of b = 18 in., h = 22 in., and d = 19.5 in. The beam is singly reinforced with all of the reinforcement in a single row. The concrete strength is 10,000 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 beam has dimensions of b = 14 in., h = 24 in., and d = 21.5 in. and is reinforced with 3 No. 5 bars. The concrete strength is 4,600 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the strength Mn for this beam.

Simply supported beams loaded with only gravity loads require longitudinal reinforcement along the top of the beam.

The basic strength requirement from ACI 318 is “Reduced nominal strength ​≥ Factored load effects.”

The elastic beam theory is used in the design of reinforced concrete beams.

You are considering a beam design that has dimensions of b = 14 in., h = 22 in., and d = 19.5 in. The beam is singly reinforced with all of the reinforcement in a single row. The concrete strength is 4,300 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?

One-way slabs typically have flexural reinforcement in the short direction to resist the entire load applied to the floor and only minimum steel for temperature and shrinkage effects in the long direction.

Because a slab is thinner than the beams supporting it, the concrete in the slab shrinks more rapidly than the concrete in the beams.