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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.
A circular footing rests on a pure clay with qu = 270 kN/m 2 , at a depth of 1.8 m. Verify the diameter of the footing if it has to transmit a load of 720 kN. Suppose the bulk u
laws of solid friction?
Example. With a surveyor compass the angles observed in traversing the lines AB, BC, CD, DE and EF are as. Compute the included angles and indicate them in a neat sketch.
describe reciprocal ranging
Q. Coating on concrete – complete im-permeability to moisture? In designing protective coating on concrete structures, stoppage of water ingress by the coating is generally req
how to calculate the section weight for open square tube
Resultant Force on a Given Area of a Vertical Plane The resultant force is calculated from the average pressure: R = (AVERAGE Ρ)(A)
Q. Explain Dissolved Impurities in water? The impurities which are caused by the action of water and water forming Acids with organic matter and carbon dio
example of continuity
While calculating Active Earth Pressure, do Coloumb''s Theory and Rehbann''s theory yield same results? I''ve tried and didn''t get the same results. Where might be the mistake?
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