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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.
Pre-tensioning systems In the previous unit we have seen different steps in a pretensioning operation. Tendon wires or strands (formed as a rope type arrangement made of sever
Q. There is a railway colony of 500 house holds source of water is from a tube well 800 m away. The colony is 10 m higher then the ground at source. Tube well is 60 meters deep. De
Explain the Damage inspections - underwater inspection of bridge? Sometimes referred to as post-event inspections, damage inspections are typically unscheduled inspections aime
if bearing of AB is 190& that of CB is 260,the included angle ABC is how?
write a short note on angular messurement using stations?
As the term implies, "Modulus of Elasticity" shows to the elasticity or "flexibility" of a material. The value of modulus of elasticity is very much important relating to deflectio
how to draw load intensity and bending moment diagram form a given shear force diagram
State the various factors that affect the bearing capacity of a shallow footing. Write short note critical notes on settlement of foundations. How do you ascertain whether a fou
We need all types of Upper floor
Absolute pressure is simply the addition of the observed gage pressure plus the value of the local atmospheric pressure.
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