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Q. Grouting in segmental linings in tunnels?
Grouting is typically carried out under pressure in segmental linings at the time of tunnel construction due to the below reasons:
(i) It helps in uniform transfer of ground pressure to the linings.
(ii) Grout serves to reduce the surface settlement.
(iii)Grout fills up the annulus of tunnel linings so as to it upholds the designed tunnel shapes.
(iv)The presence of grout aids in limiting groundwater seepage in the tunnels.
Q. Necessity of air voids in bituminous pavement? If the presence of air voids is too high, it results in an increase of permeability of bituminous pavement. This enables the f
Q. Can you explain Curved heads ? In case of rivers carrying high discharges of the order of 28300 m 3 Is and above, Gale's recommendations are more conservative than Spring's
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All semiconductors have how many electrons in their last orbit? Answer: All semiconductors have 4 electrons.
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