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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.
Aggregate Crushing Test: In which the layer of aggregates in a cylindrical measure is subjected to a compressive load of 40 T, and the per cent fines generated are determined,
find out the interior angleS with diagrame LINE AB, BC, CD, DE, EA Fore bearing 60''30" , 122'' , 46'' , 205''30" , 300''
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Define Concrete substruct - underwater inspection of bridges? Plain, reinforced, and pre-stressed concrete are used for construction of underwater elements. Since the majority
Explain Subcritical flow and Supercritical flow Subcritical flow: The depth of flow is greater than critical depth and the velocity of the fluid is slow. Also termed "tranquil"
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Q. Necessity of pile tip cover for rock-socketed H-piles? In current practice concrete cover is generally provided at the pile tips of pre-bored H-piles socketed in rock. The o
Define Inspection of Pier or Abutment? Inspection of pier/abutment may then be carried out as under: i. Conduct visual inspection of the entire surface using up and down swe
working from whole to part
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