Page 28 - Unit 1: Introduction of Highway and Engineering

Civil Engineering Department | DCC3113 : Highway & Traffic Engineering

History Macadam Roads ( 1756-1838 )

• The method of construction for Macadam roads

 Sub-grade was prepared and compacted to the required width of the road.
 Prepared sub-grade with a camber

 Construction of road consists of three layers: foundation layer, intermediate layer
and wearing surface layer.
 Cross slope of finished surface was kept as 1 in 36.

 Macadam method was first scientific method based on modern concepts and
hence is still in use in most parts of the world.

250mm

Cambered Formation

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Prepared by : SITI ZURAIFA BINTI MD SAH, zuraifa@pmu.edu.my