Page 52 - UNIT 5- FLEXIBLE PAVEMENT DESIGN

Civil Engineering Department | DCC3113 : Highway & Traffic Engineering

Exercise

The estimated average daily traffic for a two-lane-two-way trunk road which will be built
across a flat terrain is 5500 vehicles for both ways. The traffic growth rate is 4.4%, percentage
of commercial vehicle is 12% and the value of California Bearing Ratio of the sub-grade soil is
5.2%. Design life 10 years.

Requirement of pavement layers:
Wearing Course = Asphalt Concrete.

Road-Base Course = Broken Aggregate.
Sub-Base Course = Broken Aggregate.

Assume road shoulder width 2.0m and carriageway width 7.5m.

Design the flexible pavement for two-way-two-lane road based on the JKR methodology.

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