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State the term - Post-tensioned concrete
In Post-tensioned concrete construction, as shown in Figure, tendons are placed inside concrete and stretched after concrete has attained sufficient strength. In this form of construction, ducts are made inside concrete with the help of tubes or pipes, which are provided in the forms at the time of casting of concrete. After sufficient hardening of concrete, tendons are placed in these ducts, stretched from both ends from outside with the help of jacks or other suitable devices and anchored at the ends of the concrete member. After the anchorage of tendons, tensile force of tendons is transferred to the concrete in the form 'of an equal compressive force. This compressive force, upto its capacity, reduces or eliminates the tensile stresses (produced due to external loads) in concrete.
Maximum thermal stress in circular tapering section is
Q. Specification of Wood work for Door? 1. General - Timber for door, window and ventilators frames shall be as specified. Timber shall be sawn in the direction of the grains.
why
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A sand deposit of 12 m thick overlies a clay layer. The water table is 3 m below the ground surface. In a field permeability pump-out test, the water is pumped out at a rate of 540
Determine the important factors that affect the permeability of a soil. A permeameter of 8.2 cm diameter having a sample of soil of length 35 cm. It can be used either for const
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Sometimes side of concrete bridges is observed to turn black in colour . What is the main reason being for the phenomenon ?
whatis difference between premix asphalt carpeting and asphalt concrete pavement
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