BRICK AND STONE SOLING:
BRICK
AND STONE SOLING: - When the
subgrade is made of black cotton soil due to capillary rise of water extra
precautions are required to be taken. In that case thin sub base should be made
below the base, out of Murram or coarse sand. This sub base will be of stone or
boulder soling and roller should be moved over this after spraying water.
Normally soling coat is always laid but only
those places are left where the road is on the hard soil surface or big stones.
Soling should be made of those boulder or stones which are fitted on the road
sides. Grading stone, Ballast, hard stone, hard laterite stone, first class
bricks (pucca bricks), over burned bricks (jhama bricks) or any other such type
of material is also used to make the soling according to the instruction given
by the Engineer. The width of soling should be 30 cm i.e. 15 cm on each sides
more than the wearing coat.