Answer Posted / dhir

A]EARTH ROADS
Ordinary earth road
Stabilized earth road
B]GRAVEL ROADS
C]WATER BOUND MACADAM ROADS
D]BITUMINOUS ROADS
1.Surface painting road or surface dressing road
2.Bituminous macadam road
3.Bituminous concrete road
4.Sheet asphalt road or asphaltic mat
E]CEMENT CONCRETE ROADS

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What is the origin of name railway sleepers?

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Formula of mid span bar

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