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Discuss about the post-tensioning systems
In most of post-tensioning systems, when the cable is tensioned and the jack is released to transfer prestress to concrete, the friction wedges, employed to grip the wires, slip a small distance before the wires can be firmly held between the wedges. The magnitude of slip depends upon the type of wedge and the stress in the wires. This loss of prestress occurs only in post-tensioned members as no anchorages are used in pre-tensioned members.
compare riveted joints with welded joints
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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
4. Calculate the loose volume of material needed to fill in the trench as sketched below. The following information is also known: [7] o Length of trench = 250 m o Trench
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Using Matlab/ Simulink software to model the overall building fabric heat transmit characteristics, in order to estimate the maximum rate of heat loss (kW) from the building under
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