(05.02 MC)Woolly mammoths were grass-eating mammals that res…
(05.02 MC)Woolly mammoths were grass-eating mammals that resembled elephants, but with heavy coats, large tusks, and small ears that made them suited for the extremely cold weather of the ice age. In addition to hunting by humans, which other conditions may have caused woolly mammoths to become less reproductively successful and eventually become extinct at the end of the last ice age?
Read DetailsA beam has dimensions of b = 18 in., h = 24 in., and d = 21….
A beam has dimensions of b = 18 in., h = 24 in., and d = 21.5 in. and is reinforced with 4 No. 5 bars. The concrete strength is 9,700 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the compressive stress block is a = 0.501314 in. and the strain in the reinforcement is εs = 0.08063, determine the strength φMn for this beam. Assume the transverse reinforcement is not spirals.
Read DetailsA beam is singly reinforced with the reinforcement in two ro…
A beam is singly reinforced with the reinforcement in two rows. The bottom row contains 6 No. 8 bars at a depth of 22 in. The top row contains 3 No. 5 bars at a depth of 17.5 in. Determine the effective (centroidal) depth, d, of the steel.
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