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A cylindrical concrete tank, 30 m external diameter, is to be prestressed circumferentially by means of high-strength steel wire (E, = 2 x 105 N/mm2) jacked at 4 points, 900 apart. If the minimum stress in the wire immediately after tensioning is to be 450 N/mm2 and coefficient of friction is 0.5, calculate :
(a) The maximum stress to be applied to the wires at the jack, and
(b) The expected extension at the jack.
Explain the term - strength cement It should be appreciated that the tensioning arrangement shall have to be kept in place until tendons are cut. This shall depend on how quick
Determine the hydraulic radius R for a rectangular open channel with dimensions of 6 ft wide and 4 ft high (side walls) flowing at a depth of 3 ft. Solution: R = A/P Cross-s
Q. Mechanism of plastic settlement in fresh concrete? Within a few hours after placing of fresh concrete, plastic concrete can experience cracking due to occurrence of plastic
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In case of simple bending after simply supported beam, derive that M/I = s /y = E/R.
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Most of the existing rubber dams are of air-filled types. Water-filled rubber dams aren't preferred for the below reasons: (i) By giving same sheet length and dam height, tensi
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