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.

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

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.

A beam has dimensions of b = 18 in., h = 28 in., and d = 25.5 in. and is reinforced with 4 No. 6 bars. The concrete strength is 6,400 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.

The addition of compression reinforcement to an existing beam section increases the ductility of the section.

A beam has dimensions of b = 16 in., h = 22 in., and d = 19.5 in. and is reinforced with 4 No. 7 bars. The concrete strength is 9,100 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the nominal moment capacity, Mn, of the beam.

A beam has dimensions of b = 20 in., h = 10 in., and d = 7.5 in. and is reinforced with 5 No. 6 bars. The concrete strength is 5,000 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 1.941 in., does the reinforcement yield?

A tension-controlled section has a tension-reinforcement area such that when the beam reaches its nominal flexural strength, the net tensile strain in the extreme layer of tensile steel is greater than or equal to 0.005.

A classmate has suggested a beam design that has dimensions of b = 14 in., h = 24 in., and d = 21.5 in. and is reinforced with 5 No. 11 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?

More longitudinal reinforcement is required where bending moments have the smallest magnitude