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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.
In a curved prestressed bridge , how ought to the guided bearings in piers of curved region be oriented with respect to a fixed bearing in abutment?
The trigonometric levelling from the surveyor's notes is shown below. The ground elevation of T (ft) is most nearly: Solution: The elevation of point P can be found from: E
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A retaining wall is battered away from the fill from bottom to top at an angle of 15° with the vertical. Height of the wall is 6 m. The fill slopes upwards at an angle 15° away fro
Maintenance of bituminous roads
Emulsion: An emulsion is a bituminous binder which is in a fluid form at atmospheric temperatures above O o C and requires no heating at all. Bitumen cab be converted to an e
Large scale integration chips have between the components? Answer : It is between 100 and 1000 components.
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