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QuestionWhat are the key problems if use pumping for concreting works?
AnswerIn pumping operation, force exerted by pumps have to overcome friction involving concrete and pumping pipes, weight of concrete and pressure head when placing concrete above pumps. In actuality, as only water is pump able, it is water in concrete that transfers force. Major problems associated with pumping are effect of isolation and bleeding. To rectify these adverse effects proportion of cement is increased to improve cohesion sequentially to decrease segregation and bleeding. On other hand, the proper selection of aggregate grading helps to get better pump capability of concrete.
An 8 kN.m moment is applied at the end of a block fixed into the ground as illustrated in thefigure below. The moment vector (double arrow head representation) acts in line with th
TIMBER Timber refers to wood utilized for construction works. Actually the word timber is derived from an old English word 'Timbrian' that means 'to build'. A tree that yields
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How analysis of residents building g+3 structure analysisl
ADVANTAGES AND DISADVANTAGES OF SINGLE FLUMESH BOUND
Q. Knife edge loads – representation of wheel axles? In BS5400 traffic loads for HA loading are given by uniformly distributed loads along loaded length and a knife edge load.
Foundation at Different Levels on soft rock. what is minimum distance in two between footing ?
Classification Based on Modulus of Elasticity: Young's modulus is resolute by conducting bending test. On this basis timber is classified as following: Group A: E = 12.5 kN
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Explain Brake and Electrical Horsepower Brake horsepower (bhp) = whp/pump efficiency Electrical or motor horsepower (ehp) or (mhp) = bhp/motor efficiency Friction of heat
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