A beam has dimensions of b = 14 in., h = 30 in., and d = 27.5 in. and is reinforced with 3 No. 8 bars. The concrete strength is 5,500 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth to the neutral surface is c = 2.80342 in., determine the strain in the reinforcement.

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Determine As,min for the following beam given that f’c = 4,000 psi and fy = 60,000 psi.

To limit the width of potential shrinkage cracks parallel to the one-way design strips, shrinkage and temperature reinforcement is placed parallel to the primary flexural reinforcement.

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To limit the width of potential shrinkage cracks parallel to the one-way design strips, shrinkage and temperature reinforcement is placed parallel to the primary flexural reinforcement.

A beam has dimensions of b = 18 in., h = 22 in., and d = 19.5 in. and is reinforced with 3 No. 8 bars. The concrete strength is 4,600 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the compressive stress block is a = 2.02046 in. and the strain in the reinforcement is εs = 0.020742, determine the strength φMn for this beam. Assume the transverse reinforcement is not spirals.

In reviewing for the final exam, what have you discovered are the parts of the course about which you feel most confident? That is, what topics do you understand the best? Why?

A beam has dimensions of b = 14 in., h = 22 in., and d = 19.5 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. If the depth of the compressive stress block is a = 0.945378 in. and the strain in the reinforcement is εs = 0.042172, determine the strength φMn for this beam. Assume the transverse reinforcement is not spirals.

A beam has dimensions of b = 18 in., h = 12 in., and d = 9.5 in. and is reinforced with 4 No. 11 bars. The concrete strength is 4,700 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 6.388 in., does the reinforcement yield?