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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.
Details of a simply-supported beam are given in Figures (a) and (b). Note that the dead load, g includes the self weight. Design the transverse shear reinforcement in ter
Depth of Boring for Multi-storeyed Building Peck has recommended that first drill hole is to be made up to depth at which the presence of a thick layer of soft clay with a hig
Tensile stresses It has been possible to introduce tensile stresses of upto 850 N/mm 2 in tendons with the use of this method. But the method is not suited in situations where
Q. Settlement due to Lowering of Water Table? Water table is encountered with, whenever any excavations are made for foundations. The water is to be out for working conditions.
Q. Purpose of using capping layers in pavement construction? When California Bearing Ratio of subgrade is checked to be below a specific percentage (for example 5%), a capping
What is Polymer Concrete?
what is compass survey and and its method
friction problems
Solve the following problems related to Wastewater flow and densities (a) The volume of 896, 000 lb of wastewater is? (b) The weight of 13,000 ft3 of wastewater is? (c) A
description of instruments used transfer upper floors *plumb-bob method *theodolite method *theodolite and target method *optical plumbing method
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