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Recognize the losses of prestress
Recognising the losses of prestress which take place after the prestressing OF concrete structural elements, it is to be appreciated that prestresses of an order of 100 to 250 N/mm2 is generally lost due to various reasons. If the losscs of stresses are to be a small portion of the initially induced prestresses. the tendon material should be able to sustain a very high stress - say about 1200 to 2000 N/mm2. This high value of strength may not be available in mild steel and high strength steel which is used in reinforced cement concrete. This tact clearly emphasises the necessity of having tendon steel of a high strength grade.
State the effect of friction for a straight tendon The length effect represents the effect of friction for a straight tendon due to slight imperfections of the duct. In practic
A clay stratum is 4.5 m thick and rests on a rock surface. The coefficient of consolidation of a sample of this clay was found to be 4.5 × 10-8 m 2 /s in the laboratory. Verify pro
Explain Flocculation Most important factor effecting particle removal efficiency objective - to bring particles into contact so that they will collide, stick together
Calculate the Volume of Excavation Using the information given in Figure, the volume of excavation in yd 3 is most nearly: Solution: Use the average end area meth
Cross Drainage Work: Several natural streams, rivers and canals cross the road. They have to be led across the road through culverts and bridges. That given structures is kno
How do we overcome obstacle like river in chain survey?
In a hydrometer analysis, 0.5 N of soil was mixed in water to form one litre of uniform suspen- sion. The corrected hydrometer reading after a lapse of 60 min. from the start of se
how to design steelstructure
Q. Free- fall concrete placement in bored piles? Based on the research by STS Consultants Ltd it was found that concrete placed by free falling below 120 feet will not suffer f
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