The subgrade provides support to the subbase level and acts as an integral load-bearing layer. Failure of the subgrade can cause depressions and rutting of the upper base and surface courses. These in turn can lead to water pooling in deformations and cause vehicle aquaplaning among other issues.[2]
The term can also refer to imported material that has been used to build an embankment.
Constructionedit
Subgrades are commonly compacted before the construction of a road, pavement or railway track. This is to ensure their ability to absorb the loads being transferred down from the upper layers, increasing the life and wear of the surface courses.
^"Ruts Cause Hydroplaning Accidents". www.atlantaeng.com. Retrieved 2024-02-09.
January 01, 1970
subgrade, transport, engineering, subgrade, native, material, underneath, constructed, road, pavement, railway, track, railroad, track, also, called, formation, level, layers, construction, mortarless, pavement, subbase, base, course, paver, base, pavers, fine. 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 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 The subgrade provides support to the subbase level and acts as an integral load bearing layer Failure of the subgrade can cause depressions and rutting of the upper base and surface courses These in turn can lead to water pooling in deformations and cause vehicle aquaplaning among other issues 2 The term can also refer to imported material that has been used to build an embankment Construction editSubgrades are commonly compacted before the construction of a road pavement or railway track This is to ensure their ability to absorb the loads being transferred down from the upper layers increasing the life and wear of the surface courses See also editSubsoil Track bedReferences edit http www highwaysmaintenance com drainage htm The Idiots Guide to Highways Maintenance highwaysmaintenence com Ruts Cause Hydroplaning Accidents www atlantaeng com Retrieved 2024 02 09 Retrieved from https en wikipedia org w index php title Subgrade amp oldid 1205298534, wikipedia, wiki, book, books, library,