169. Post tensioning system
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170. The system in which high tensile alloy steel bars (silica manganese steel) are used as prestressing tendons, is known as
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171. If k is wobble correction factor, g is coefficient of friction between the duct surface and the curve of tendon of radius R, the tension ratio at a distance x from either end, is
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172. After prestressing process is completed, a loss of stress is due to
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173. If C is creep coefficient, f is original prestress in concrete, m is modular ratio, E is Young's modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is :
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174. A per IS : 1343, total shrinkage for a pretensioned beam, is
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175. The reinforced concrete beam which has width 25 cm lever arm 40 cm, shear force 6t/cm2, safe shear stress 5 kg/cm and B.M. 24 mt,
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