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Question
What is key role of drilling fluid in rotary drilling in site search?
Answer Drill fluid in rotating serves two main reasons.
(i) Facilitate rotation of drilling tube during rotary drilling.
(ii) Do something as a cooling agent to cool down heat generated during drilling operation. Traditionally, water is in general employed as drilling fluid. Yet, it suffers from following problems-
(i) It affects constancy of nearby ground with introduction of water into borehole
(ii) It affects excellence of instance by changing water content of soil samples collected from borehole or drillhole.
What is the meaning of Elastic Shortening of Concrete At the transfer stage, compressive prestressing force is transferred to the concrete. Due to this compressive force, concr
what is the difference between whole circle bearing and reduced bearing?
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Roads in Hilly Areas: (a) The alignment selected should attain the changes in elevation by adopting the ruling gradient to the maximum length. Limiting and exceptional
Test required before laying or after laying.
Q. Maintenance of steel bearings? Cleaning and greasing of bearings is one of the important maintenance works to avoid premature failure of bearings and reduce recurring heavy
Distance ABC was measured with a 30m. Chain tested and found to be correct in the beginning of the work .after measuring AB=1.2 km chain was found to be 10 cm. To long chaining was
State the natural frequency of a machine foundation of base area 2m × 2m and weight 150 kN, suppose that the soil mass participating in the vibration is 20% of the weight of founda
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