The symbol Mu represents the _______.

One of the primary reasons for using compression reinforcement in concrete beams is to increase the ductility of a given beam section.

A beam has dimensions of b = 14 in., h = 26 in., and d = 23.5 in. and is reinforced with 5 No. 7 bars. The concrete strength is 4,600 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth to the neutral surface is c = 4.010088 in., determine the strain in the reinforcement.

The largest column loads are due to factored dead load and live load applied to all spans.

A simply supported beam with dimensions of b = 16 in., h = 22 in., d = 19.5 in., and L = 16 ft supports a uniform service (unfactored) dead load consisting of its own weight plus 1.7 kips/ft and a uniform service (unfactored) live load of 0.9 kips/ft. The concrete is normal-weight concrete. Determine the moment due to the factored loads, Mu.      

Which symbol represents the specified yield strength of steel reinforcement?

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

Determine As,min for the following beam given that f’c = 6,000 psi and fy = 60,000 psi.

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 5 No. 8 bars on the tension side. The concrete strength is 3,700 psi, and the yield strength of the reinforcement is 60,000 psi. For the results given below, determine the strength Mn for this beam.a = 4.75 in. (depth of concrete stress block)Cc = 207.2 kips (compressive force in concrete)Cs = 29.8 kips (compressive force in steel)T = 237.0 kips (tensile force in steel)

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