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

Question General requirement for Civil Engineering Works in 1992 Edition, Clause 15.09 details that tying wires for strengthening adjacent to and above Class F4 and F5 closes must

How the stabilization of black cotton soil was done in field? what are the methods to do that?

first of all i want to think you for this helpful website , and let me ask you this question . how to calculate w/c ratio ? thank you so much for you .

what is the advantages of Flemish bond

Specify the various methods of soil exploration and mention the circumstances under which each is best suited. What do you mean by undisturbed sample? Define with a neat sketch

Question What is major importance of air void content in bituminous pavements? Answer Air void content of bituminous materials is important control parameter for quali

in plane table surveying which activity is done first whether centering or levelling?

The local survey crew measures a distance of 1,135 ft of new drainage pipe that is required for the new road construction. The beginning point for the drainage is located at statio

Q. Fixed vs pinned connection between piles and pile caps? The type of connection amid piles and pile caps affects the load carrying capacity of pile groups. Fixity of pile hea