subgrade

As nouns the difference between subgrade and null

is that subgrade is the layer of native soil on which the foundation of a road is laid while null is zero, nil; the cardinal number before einn.

As a letter s

is the letter s with a.

As a noun subgrade is

the layer of native soil on which the foundation of a road is laid.

As nouns the difference between subgrade and roadbase

is that subgrade is the layer of native soil on which the foundation of a road is laid while roadbase is the layer of aggregates under the paved layer of a road.

As an acronym base

is b'''uilding'', '''''a'''ntenna-tower'', '''''s'''pan'', '''''e arth .

As a noun subgrade is

the layer of native soil on which the foundation of a road is laid.

As nouns the difference between taxonomy and subgrade

is that taxonomy is the science or the technique used to make a classification while subgrade is the layer of native soil on which the foundation of a road is laid.

As nouns the difference between subbase and subgrade

is that subbase is the lowest projecting part of a baseboard, a pedestal or a similar construct while subgrade is the layer of native soil on which the foundation of a road is laid.

As nouns the difference between subgrade and roadbed

is that subgrade is the layer of native soil on which the foundation of a road is laid while roadbed is the prepared location for a road, including its foundation.

As nouns the difference between road and subgrade

is that road is (obsolete) the act of riding on horseback while subgrade is the layer of native soil on which the foundation of a road is laid.

As nouns the difference between foundation and subgrade

is that foundation is the act of founding, fixing, establishing, or beginning to erect while subgrade is the layer of native soil on which the foundation of a road is laid.