(04.06 MC) The 200-meter race times at a state track meet a…
(04.06 MC) The 200-meter race times at a state track meet are normally distributed with a mean of 13.56 seconds and a standard deviation of 2.24 seconds. Using the Standard Normal Probabilities table, what is the approximate probability that a runner chosen at random will have a 200-meter time less than 13.5 seconds? (5 points)
Read DetailsA beam has dimensions of b = 16 in., h = 24 in., and d = 21….
A beam has dimensions of b = 16 in., h = 24 in., and d = 21.5 in. and is reinforced with 2 No. 6 bars. The concrete strength is 7,000 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the compressive stress block is a = 0.554622 in. and the strain in the reinforcement is εs = 0.078407, determine the strength φMn for this beam. Assume the transverse reinforcement is not spirals.
Read DetailsA beam has dimensions of b = 18 in., h = 28 in., and d = 25….
A beam has dimensions of b = 18 in., h = 28 in., and d = 25.5 in. and is reinforced with 2 No. 6 bars. The concrete strength is 3,400 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.
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