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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.
LOSS OF PRESTRESS DUE TO SHRINKAGE OF CONCRETE We know that concrete shrinks in volume when it dries up. This volume reduction takes place in the form of reduction of all dime
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calculating included angle and bearing
Question While design life will it be same as return period for design situations ? Answer Design life means least duration a structure is accepted to last. Longe
Hi Sir I have a graduation project part (A) in this semester. I have chosen topic (Analysis and design of Swimming Pool). I got this project ready from friend so I want Presented
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
What is the station at Point B? SOLUTION 3 Station at Point A = Sta 22+45 Station at Point B = (Sta 22+45) + 1028' = 2245'+1028' =3273' = Sta 32+73
what are the roles of civil engineers in storm water management
a street light is 15 ft directly above the curb. a 6 ft man starts 10 ft down the street from the light and walks directly across the street which is 10 ft wide. when he reaches th
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
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