A beam has dimensions of b = 14 in., h = 28 in., d’ = 2.5 in., and d = 25.5 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 2,800 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 7.179 in., determine the force in the compression reinforcement, Cs.

A classmate has suggested a beam design that has dimensions of b = 16 in., h = 24 in., and d = 21.5 in. and is reinforced with 4 No. 14 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?

Determine β1 given that f’c = 5,500 psi.

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.