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Effective compaction is not achieved by ____________ rollers.(a) Rubber tyred(b) Sheep’s foot(c) Pneumatic(d) Smooth wheeledI had been asked this question during a job interview.My enquiry is from Hoisting Equipments topic in chapter Construction Equipments of Construction & Building Materials

Answer»

The correct answer is (d) Smooth wheeled

For explanation: The performance of three wheeled roller is a better as compared to a TWO wheel unit because of the concentration of pressure on the middle wheel when the roller passes over a spot in the surface that is being compacted. The SINGLE wheel roller has DIAMETER of about 900 MM and length of about 1.20 metres.



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