A beam has dimensions of b = 16 in., h = 28 in., and d = 25.5 in. and is reinforced with 5 No. 8 bars. The concrete strength is 4,900 psi, and the yield strength of the reinforcement is 60,000 psi. Assuming the reinforcement has yielded, determine the tensile force T in the reinforcement.
Read DetailsA beam has dimensions of b = 16 in., h = 24 in., and d = 21.5 in. and is reinforced with 5 No. 5 bars. The concrete strength is 6,100 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the compressive stress block is a = 1.121022 in. and the strain in the reinforcement is εs = 0.039865, determine the strength φMn for this beam. Assume the transverse reinforcement is not spirals.
Read Details(05.03 MC)Using your knowledge of hominid evolution, which of the following correctly associates the given brain capacities with the hominid species in the table in order from smallest to largest? Species Time period(millions of years ago) Tool use A. afarensis 3.6–2.8 Possible tool use A. africanus 3.0–2.4 Possible tool use H. habilis 2–1.5 Simple stone tools H. neanderthalensis 0.13–0.035 Complex stone tools
Read DetailsA beam has dimensions of b = 14 in., h = 24 in., and d = 21.5 in. and is reinforced with 4 No. 6 bars. The concrete strength is 5,500 psi, and the yield strength of the reinforcement is 60,000 psi. Assuming the reinforcement has yielded, determine the tensile force T in the reinforcement.
Read Details(04.02 HC)The table below shows salinity tests from coastal Louisiana following a salt water influx during hurricanes Katrina and Rita. If efforts are not made to reduce the salinity in these areas, what is the most likely long term effect?
Read DetailsA beam has dimensions of b = 14 in., h = 22 in., and d = 19.5 in. and is reinforced with 3 No. 8 bars. The concrete strength is 6,100 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.
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