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Which of the following is not a reason why concrete is reinforced with steel in the compression zone?

In a one-way slab, the slab strips used for analysis span the short direction of the panel.

Assuming Vs exceeds 4sqrt(f’c)bwd, the maximum spacing for vertical stirrups in the following beam is _____. Let b1 = 22 in., b2 = 11 in., d = 57 in., h1 = 6 in., h2 = 48 in., h3 = 8 in., and t = 8 in. There are sixNo. 8 longitudinal tension bars and No. 5 stirrups at 11 in. o.c.

A beam has dimensions of b = 16 in., h = 30 in., and d = 27.5 in. and is reinforced with 4 No. 6 bars. The concrete strength is 5,800 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the nominal moment capacity, Mn, of the beam.

For a beam with stirrup hooks, the free end of the bar must extend at least _____ from the hook. Assume b1 = 25 in., b2 = 15 in., d1 = 4 in., d2 = 25 in., and that there are three No. 8 longitudinal tension bars and No. 5 stirrups at 12 in. o.c. The stirrup hooks are 90°.

A beam has dimensions of b = 14 in., h = 30 in., d’ = 2.5 in., and d = 27.5 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 2,800 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 5.68 in., determine the force in the compression reinforcement, Cs.

A classmate has suggested a beam design that has dimensions of b = 16 in., h = 22 in., and d = 19.5 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?

In typical U.S. practice, beam depths are rounded to the closest half inch.

In typical U.S. practice, beam depths are rounded to a whole inch unit and often to an even number of inches.

A beam has dimensions of b = 14 in., h = 30 in., d’ = 2.5 in., and d = 27.5 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 3,100 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 = 4.424 in. (depth of concrete stress block)Cc = 161.6 kips (compressive force in concrete)Cs = 28.0 kips (compressive force in steel)T = 189.6 kips (tensile force in steel)