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Which symbol represents the cross-sectional area of the reinforcement on the compression side of a reinforced concrete beam?

ACI Code Section 22.2.2.1 specifies a limiting compressive strain, εcu, equal to _____.

A classmate has suggested a beam design that has dimensions of b = 12 in., h = 24 in., and d = 21.5 in. and is reinforced with 4 No. 7 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?

A beam has dimensions of b = 14 in., h = 26 in., and d = 23.5 in. and is reinforced with 3 No. 8 bars. The concrete strength is 6,400 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the nominal moment capacity, Mn, of the beam.

Enough space should be provided between the reinforcement to allow a vibrator to reach the bottom of the form in at least one place in the beam width.

A beam has dimensions of b = 18 in., h = 24 in., and d = 21.5 in. and is reinforced with 3 No. 6 bars. The concrete strength is 7,900 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.

Which symbol represents the specified yield strength of steel reinforcement?

A beam has dimensions of b = 16 in., h = 24 in., and d = 21.5 in. and is reinforced with 2 No. 6 bars. The concrete strength is 9,100 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the strength Mn for this beam.

It is important to overestimate d, because normal construction practices may lead to smaller values of d than are shown on the drawings.

What is the symbol for nominal flexural strength?