To prevent movement of moisture from subgrade to road pavement on embankments about 0.6 m to 1 m higher than water table, the thickness of cut off layer of coarse sand used, is
Options
A. 15 cm
B. 20 cm
C. 30 cm
D. 45 cm
E. none of these.
Correct Answer
none of these.
Highway Engineering problems
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1. For the design of cement concrete pavement for corner loading, Indian Road Congress recommends the use of
5. The statement, regarding the size of stones used at the wearing surface. "The size of a stone used on a road must be in due proportion to the space occupied by a wheel of ordinary dimensions on a smooth level surface. The point of contact will be found to be longitudinal about 2.5 cm and every piece of stone put into the road which exceeds 2.5 cm in any of its dimension is mischievious" was made by