Verb:

बढती द्या, यंत्रे सुधारणे इ.,

subgrade's Usage Examples:

It is designed primarily to reduce the stress on the subgrade.

Scarification of the subgrade layer prior to application of the surface gravel layer.

course, and subbase course constructed over a compacted, natural soil subgrade.

and road construction as a subbase layer reinforcing and protecting the subgrade.

surface layer will follow the crown established by the subgrade layer.

In transport engineering, subgrade is the native material underneath a constructed road, pavement or railway track (US: railroad track).

In the early stages, sealing cracks with crack sealant limits further deterioration of the subgrade due to moisture penetration.

the California pavement design method, and specify R-Value testing for subgrade soils and road aggregates.

procedure underwent a series of tests examining whether an increase of the subgrade tensile strength occurred.

This method involved spreading tar on the subgrade, placing a typical macadam layer, and finally sealing the macadam with a mixture.

the construction site, the pavement constructed on the marine clay (as subgrade) will have less durability and requires lot of maintenance cost.