In transport engineering, subgrade is the native material underneath a constructed road,[1] pavement or railway track (US: railroad track). It is also called formation level.
The term can also refer to imported material that has been used to build an embankment.
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Subgrade
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Lec-6 Subgrade and Survey Work | Railway Engineering in HINDI / Transportation Engineering |GATE
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Modern Road Structure | Civil Engineering | 2017 | Transportation
Transcription
Construction
Subgrades are commonly compacted before the construction of a road, pavement or railway track
See also
References
- ^ http://www.highwaysmaintenance.com/drainage.htm The Idiots' Guide to Highways Maintenance highwaysmaintenence.com
