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Q. Purpose of using capping layers in pavement construction?
When California Bearing Ratio of subgrade is checked to be below a specific percentage (for example 5%), a capping layer is generally provided to decrease the effect of weak subgrade on the structural performance of the road. It also provides a working platform for sub-base to be created on top in wet weather condition since the compaction ofwet subgrade is difficult on site. Effect of interruption by wet weather can be decreased significantly and progress of construction works wouldn't be hindered. Most significantly, cost of cappinglayers is low since the material can be readily attained locally.
Q.- Explain the Unit hydrograph Method for estimation of peak flood discharge in a river. Ans.- Unit hydrograph Method A hydrograph is a representation of hydraulic cha
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Define Hydraulic tools for underwater inspection of bridge? Hydraulic tools involve grinders, rotary brushes and scrubbers. The benefits of hydraulic tools are the same as thos
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A cylindrical concrete tank, 30 m external diameter, is to be prestressed circumferentially by means of high-strength steel wire (E, = 2 x 10 5 N/mm 2 ) jacked at 4 points, 9
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