Page 70 - Lecture Notes DCC3113

The functions of a road shoulder are;
i. It prepares a flat support to the road pavement.
ii. Drains the water surface to the road side drain and avoid humidity from diffusion.
iii. Provides space for traffic users to stop by the roadside of the road and also for emergency lane
during overtaking, especially on the one way street road.
iv. Provides lane/ path for pedestrians and cyclists
v. Provides space for traffic signs and guard rails.

The purpose road shoulder design is:

Safety
i. It can provide a factor of safety for road user who accidently
ii. To provide sealed pavement area on the roadside.
iii. Provide space for vehicles to stop during emergency.
iv. Improved sight distances

Structured
i. Protect the sealed pavement from excess deterioration.
ii. Support side of the road pavement

Recreation
i. Increased roadway width to accommodate agricultural
ii. Vehicles for cyclist

Figure 4-7: The types of road shoulder

4.1.4 Priming work in flexible pavement

Premix is the process of surface layer after finishing spraying the prime coat. Usually the
process of paving of the road will use the paving machine. The pavement construction is as follows:
a. Firstly, the trunk will pour the premix (the call to a mixture of aggregate and bituminous oil in
the paver).
b. Paver machine will move forward while premix will pass from the machines slowly.
c. Elevation will be controlled automatically follow the design
d. The temperature must be approximately 150 degrees Celsius.
e. Make sure the condition method follow the standard,

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