For economic reasons, reinforced concrete should be designed to be _______.

A beam has dimensions of b = 16 in., h = 26 in., and d = 23.5 in. and is reinforced with 2 No. 7 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 tensile force T in the reinforcement.

A beam is singly reinforced with the reinforcement in two rows. The bottom row contains 6 No. 7 bars at a depth of 22 in. The top row contains 4 No. 6 bars at a depth of 16.5 in. Determine the effective (centroidal) depth, d, of the steel.

A beam has dimensions of b = 18 in., h = 28 in., and d = 25.5 in. and is reinforced with 2 No. 5 bars. The concrete strength is 5,500 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the compressive stress block is a = 0.442068 in. and the strain in the reinforcement is εs = 0.131114, determine the strength φMn for this beam. Assume the transverse reinforcement is not spirals.

A beam has dimensions of b = 18 in., h = 30 in., and d = 27.5 in. and is reinforced with 2 No. 8 bars. The concrete strength is 5,800 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth to the neutral surface is c = 1.405644 in., determine the strain in the reinforcement.

The most effective way of changing the nominal flexural strength of a beam would generally be by _______.

A beam has dimensions of b = 16 in., h = 26 in., and d = 23.5 in. and is reinforced with 4 No. 7 bars. The concrete strength is 4,000 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 = 16 in., h = 26 in., and d = 23.5 in. and is reinforced with 5 No. 7 bars. The concrete strength is 3,400 psi, and the yield strength of the reinforcement is 60,000 psi. Assuming the reinforcement has yielded, determine the tensile force T in the reinforcement.

A beam has dimensions of b = 18 in., h = 30 in., and d = 27.5 in. and is reinforced with 2 No. 6 bars. The concrete strength is 3,100 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.

A beam has dimensions of b = 14 in., h = 22 in., and d = 19.5 in. and is reinforced with 4 No. 8 bars. The concrete strength is 10,000 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the nominal moment capacity, Mn, of the beam.