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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.
A retaining wall 9 m high retains granular fill weighing 18 kN/m 3 with level surface. The active thrust on the wall is 180 kN per metre length of the wall. The height of the wall
explain the construction while aligning roads on hilly areas
Question Should dolphins be designed in a rigid manner such as resting on several raking piles? Answer While designing dolphins, they are normally supported on a syste
In a cantilever truss it is very essential to find out the reactions before analyzing it.
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haw do you salve a supple supported beam with a spring balance
Question-What are three key types of r einforcement used in pre stressing ? Answer- (i) Spalling reinforcement - Spalling stresses are established behind loaded
A five-mile long section of two-lane road has an AADT of 8,000. There have been six crashes on this section of road during the past two years. What is the crash rate? R sec
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In a hydrometer analysis, the corrected hydrometer reading in a 1000 ml uniform soil suspension at the start of sedimentation was 28. After a lapse of 30 minutes, the corrected hyd
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