Friday 30 January 2015

Road construction

Road construction 


In a modren time road where constructed with diffrent types and mostly used the construction of road with various method

first of all site selection of road for road .

and then site clearence
use the machinary
grader will used for the lavel of sub grade there are three type of road base .
sub base
base
topping

dry compaction of road with roller and then 4 inch thcikness of aggregate laying and compaction on this then wet compaction and 2 inch thickness of sand laying on aggregate for filling the voids of aggregate .
and then taken the camber and gradient in the road .
gradient mean the side slope of road in longutudional axix and given the camber in width of road .
then prepar the surface of road with esphalt pever .

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