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What is Thermo-electric prestressing
We know that, stretched tendons are used in prestressed concrete. Stretching of tendons may be accomplished by using jacks or by other means. Thermo-electric prestressing is just another method of stretching the tendon wiers. We know that if we increase the temperature of a metal, it expands. As the name suggests, in Thermo-electric prestressing, temperature of tendon wires is increased by passing electric current for a short duration. This temperature increase, taking place within 3-5 minutes, may be of an order of 300-400°C. The bars, which may undergo an expansion of about 0.4-0.5% in length, try to shorten at cooling butare checked by fixed anchors at the two ends.
A wall with a smooth vertical back and 9 metres high retains a moist cohesionless soil with a horizontal surface. The soil weighs 15 kN/m3 and has an angle of internal friction of
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Q. By which Materials Shank of a spur construct? Shank of a spur is constructed of sand core and its exposed faces are protected by stone pitching. The attack at nose is very h
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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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AFor the given reinforced concrete moment frame school building determine; 1. The wind load acting on the middle truss in the roof truss assembly. 2. The net wind pressure (Wnet) o
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Determine the term - Degree of Prestressing Degree of Prestressing It is a measure of the magnitude of the prestressing force related to the resultant stress occurring in
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