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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.
Physical Classification Based on the structure, the rocks can be classified as following: Stratified rocks Un -stratified rocks A. Stratified Rocks: These ro
Explain Fluidized-Bed Incinerators sand is heated to 800C by oil or gas and blown around (fluidized) by a blower that sends air from bottom upward heated fluidized san
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Joints in box culverts and channels - necessity of water tightness The joints for box culverts and channels must be capable of accommodating movements arising from moisture an
A sample of clay taken from a natural stratum was originated to be partially saturated and when tested in the laboratory gave the following results. Calculate the degree of saturat
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1. Draw the projections of a line AB that is 50 mm long and is parallel to both the HP and the VP. The line is 40 mm above the HP and 25 mm in front of the VP. 2. A line AB, 50 mm
Resection three point problem.
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