Soil in road construction, Civil Engineering

Soil in Road Construction:

Road Embankment and Sub-grade

Soil is mainly used as the material for constructing a road embankment. The road embankment supports the road pavement which receives the heavy loads from the traffic. The soil forming the embankment should have sufficient bearing power to withstand the loads transmitted to it. The embankment again rests on natural soil, and the natural soil should have sufficient bearing power to withstand the weight of the embankment and the pavement and the traffic loads.

The 300-500 mm layer in the soil embankment immediately below the pavement is known by the name sub-grade (Figure). Since this layer bears the traffic loads transmitted through the pavement, it is generally made with a selected soil and compacted to a density higher than the rest of the embankment. For all important highways, the sub-grade is 500 mm thick. For Rural Roads, a thickness of 300 mm is adequate.

1551_Soil In Road Construction.png

Figure: Road Embankment showing Sub-grade

Posted Date: 1/22/2013 2:45:34 AM | Location : United States







Related Discussions:- Soil in road construction, Assignment Help, Ask Question on Soil in road construction, Get Answer, Expert's Help, Soil in road construction Discussions

Write discussion on Soil in road construction
Your posts are moderated
Related Questions

how can Simulink calculate wave speed of water hammer

In some nations such as Britain, specification for concrete doesn'tusually require cube tests for standard mixes of concrete. Quality control of standard mixes in Britain is achiev


fabrication methods of ironmongery

A heavy equipment rental company uses a high interest rate of 30% for the rental of a specialty heavy haul dump truck.  The net annual profit for this investment is most nearly:


Derivation of Moment-Area Method

Q. What is Immediate Settlement? Strain in all coarse grained, dry or partly saturated fine grained soils occur immediately after the application of stress. Hence, this change

TYPES OF OBSTACLES IN CHAIN SURVEYING