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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.
The inner diameters of a sampling tube and that of a cutting edge are 70 mm and 68 mm correspondingly, their outer diameters are 72 and 74 mm respectively. Verify the inside cle
The Morison equation vs. diffraction analysis in determining wave force on piles The choice between Morison's equation and diffraction analysis in determining the wave forces o
a 45 cm deep roof beam is provided on 30 cm wall of a room size 3.0m*5.0m . calculate the quantity of steel required in beam on percentage basis.
describe in detail the various parts of a total station
Advantages of bonded post-tensioning systems Some advantages of bonded post-tensioning systems over unbonded post-tensioning ones are the following : (a) Large reduction in
A finish-to-finish activity is best described as: The "from" activity must finish before the "to" activity can finish The "from" activity must finish before the "to" acti
grading classification
Problem with structure analysis-2
Q. Full bore flow in drainage design? In the design of gravity drainage pipes, full bore flow capacity is usually adopted to check against design runoff. Though one should note
Tests on Bricks The following laboratory tests can be conducted on the bricks to find their suitability: 1. Crushing strength 2. Absorption 3. Shape and size
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