A beam has dimensions of b = 14 in., h = 30 in., d’ = 2.5 in…
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 strain in the compression reinforcement, ε’s.
Read DetailsFor a beam with stirrup hooks, the free end of the bar must…
For a beam with stirrup hooks, the free end of the bar must extend at least _____ from the hook. Assume b1 = 39 in., b2 = 15 in., d1 = 8 in., d2 = 19 in., and that there are three No. 6 longitudinal tension bars and No. 3 stirrups at 12 in. o.c. The stirrup hooks are 90°.
Read DetailsA beam has dimensions of b = 14 in., h = 26 in., d’ = 2.5 in…
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 force in the compression reinforcement, Cs.
Read DetailsA beam has dimensions of b = 14 in., h = 30 in., d’ = 2.5 in…
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 5 No. 8 bars on the tension side. The concrete strength is 3,400 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 6.026 in., determine the strain in the compression reinforcement, ε’s.
Read DetailsA 58-year-old male presents for c/o of a productive cough fo…
A 58-year-old male presents for c/o of a productive cough for the third time in 9 months. He has a 42-pack-year history but is currently smoking 8 cigarettes/day due to the cough. With his smoking history you are concerned about the possibility of COPD. Which of the following criteria is included in the GOLD (Global Initiative for Chronic Obstructive Lung disease) classification for the diagnosis of COPD?
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