A classmate has suggested a beam design that has dimensions of b = 12 in., h = 28 in., and d = 25.5 in. and is reinforced with 4 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?

Emilia sees a car approaching, and she stops walking. Emilia hands a valet her ticket and then her car approaches. Emilia sees a car approaching, and she waves. The approaching cars in each scenario are examples of:

A beam is singly reinforced with the reinforcement in two rows. The bottom row contains 8 No. 6 bars at a depth of 24 in. The top row contains 6 No. 8 bars at a depth of 18 in. Determine the effective (centroidal) depth, d, of the steel.

A beam has dimensions of b = 20 in., h = 10 in., and d = 7.5 in. and is reinforced with 5 No. 5 bars. The concrete strength is 4,400 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 1.498 in., does the reinforcement yield?

Ralph is the behaver. Which of the following is an example of an antecedent?

A beam has dimensions of b = 20 in., h = 12 in., and d = 9.5 in. and is reinforced with 5 No. 6 bars. The concrete strength is 2,900 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 3.15 in., does the reinforcement yield?

A fire alarm begins ringing. This is an example of a(n):

Which of the following demonstrates a weakening effect on behavior?

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 strain in the compression reinforcement, ε’s.

You are considering a beam design that has dimensions of b = 16 in., h = 30 in., and d = 27.5 in. The beam is singly reinforced with all of the reinforcement in a single row. The concrete strength is 9,100 psi, and the yield strength of the reinforcement is 60,000 psi. What cross-sectional area of reinforcement is needed to achieve a strain in the reinforcement of 0.0075?