A beam has dimensions of b = 18 in., h = 24 in., and d = 21.5 in. and is reinforced with 3 No. 6 bars. The concrete strength is 7,900 psi, and the yield strength of the reinforcement is 60,000 psi. Assuming the reinforcement has yielded, determine the depth to the neutral axis, c.

Cantilever beams loaded with only gravity loads require longitudinal reinforcement along the bottom of the beam.

A beam has dimensions of b = 18 in., h = 28 in., and d = 25.5 in. and is reinforced with 4 No. 7 bars. The concrete strength is 8,200 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth to the neutral surface is c = 1.76581 in., determine the strain in the reinforcement.

Bars of longitudinal reinforcement must extend the full beam length.

A beam has dimensions of b = 18 in., h = 24 in., and d = 21.5 in. and is reinforced with 5 No. 8 bars. The concrete strength is 7,300 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the strength Mn for this beam.

A beam is singly reinforced with the reinforcement in two rows. The bottom row contains 8 No. 7 bars at a depth of 24 in. The top row contains 6 No. 8 bars at a depth of 20.5 in. Determine the effective (centroidal) depth, d, of the steel.

In typical U.S. practice, beam depths are rounded to a whole inch unit and often to an even number of inches.

A beam has dimensions of b = 14 in., h = 26 in., d’ = 2.5 in., and d = 23.5 in. It is reinforced with 2 No. 5 bars on the compression side and 4 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 = 4.199 in., determine the force in the compression reinforcement, Cs.

When faced with severe architectural restrictions on the dimensions of a beam, a designer may be forced to use a singly reinforced section.

A concrete floor system with a ratio of the longer to the shorter span length that is less than 2 is usually considered a one-way system.