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State about the pre-tensioned concrete beam
A pre-tensioned concrete beam, 200 mm wide and 300 mm deep, is prestressed by straight wires carrying an initial force of 150 kN at an eccentricity of 50 mm. Assume modulus of elasticity of steel as 2 x 105 N/mm2 and that of concrete as 0.33 x 105 N/mm2, respectively. Estimate the percentage loss of stress in steel due to elastic deformation of concrete if the area of steel wires is 188 mm2.
Define Surface Water Treatment Rule (SWTR) SWTR sets forth primary drinking water regulations requiring treatment of surface water supplies or groundwater supplies under the di
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length of the line measured with 20m chain found to be 250m.calculate true length if the chain was 10cm long
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