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From Wikipedia, the free encyclopedia

Layers in the construction of a mortarless pavement: A.) Subgrade B.) Subbase C.) Base course D.) Paver base E.) Pavers F.) Fine-grained sand
Layers in the construction of a mortarless pavement: A.) Subgrade B.) Subbase C.) Base course D.) Paver base E.) Pavers F.) Fine-grained sand
Section through railway track and foundation showing the sub-grade
Section through railway track and foundation showing the sub-grade

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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Transcription

Construction

Subgrades are commonly compacted before the construction of a road, pavement or railway track

See also

References

  1. ^ http://www.highwaysmaintenance.com/drainage.htm The Idiots' Guide to Highways Maintenance highwaysmaintenence.com
This page was last edited on 23 May 2020, at 19:56
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