In reviewing for the final exam, what are the parts of the course that you feel least confident about? That is, what concepts still confuse you or intimidate you in some way? Why? What is is about these concepts that you just don’t “get”? And what steps do you plan to take to help you learn these concepts?

A beam has dimensions of b = 14 in., h = 24 in., and d = 21.5 in. and is reinforced with 2 No. 5 bars. The concrete strength is 4,300 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 = 16 in., h = 26 in., and d = 23.5 in. and is reinforced with 5 No. 8 bars. The concrete strength is 4,000 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth to the neutral surface is c = 5.125433 in., determine the strain in the reinforcement.

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

A beam has dimensions of b = 20 in., h = 10 in., and d = 7.5 in. and is reinforced with 4 No. 7 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 = 2.211 in., does the reinforcement yield?

A simply-supported beam has a 4 kip/ft uniformly-distributed load over the entire 8-ft span. What is the magnitude of the maximum shear force in the beam?

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

A simply supported beam with dimensions of b = 16 in., h = 26 in., d = 23.5 in., and L = 17 ft supports a uniform service (unfactored) dead load consisting of its own weight plus 1.6 kips/ft and a uniform service (unfactored) live load of 0.8 kips/ft. The concrete is normal-weight concrete. Determine the moment due to the factored loads, Mu.      

A beam has dimensions of b = 18 in., h = 12 in., and d = 9.5 in. and is reinforced with 4 No. 7 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 = 2.353 in., does the reinforcement yield?

A beam has dimensions of b = 14 in., h = 30 in., and d = 27.5 in. and is reinforced with 5 No. 5 bars. The concrete strength is 4,300 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth to the neutral surface is c = 2.176612 in., determine the strain in the reinforcement.