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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.
Water Bound Macadam: Water Bound Macadam (WBM) is a dense and compact course of a road pavement composed of stone aggregates held together by a film consisting of gravel or s
You wish to buy a house and you can afford to make a down payment of $50,000. Your monthly mortgage payment cannot exceed $2,000. If 30-year loans are available at 7.5% annual inte
A cantilever has two couples: 1st(clockwise, 15kNm) placed at (1/3)L from support and 2nd (anti-clockwise, 10kNm) at (2/3)L from the support. What should be the reaction at the sup
Impact Test: Resistance of stones to impact is found by conducting tests in impacting testing machine .It contain of a frame with guides in which a metal hammer weighing 13.
when we provide open foundation in bridges?
Compare the probabilities: Use the central limit theorem to compute P (¦ X - μ ¦ ≥ k), k = 1, 2,3,4,5 where X and μ are as defined in Example. Compare the probabilities with t
Soil at a borrow area has a total unit weight of 120-PCF and a water content of 15 percent. The soil from the borrow area will be used as structural fill and compacted to an avera
investigation of strength properties of black cotton soil stabilised with fly ash and georeinforcement
Check if the given beam and loading satisfy the AISC LRFD strength criteria. The beam section is a W 16*31 of A36 steel and it is laterally supported at the ends at the load points
Load Distribution Factor: The formula for deriving at the number of repetitions of the standard axle load during a design period of n years is: N =365 × A × VDF × F [(1 + r
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