Definition of Subgrade. Meaning of Subgrade. Synonyms of Subgrade

Here you will find one or more explanations in English for the word Subgrade. Also in the bottom left of the page several parts of wikipedia pages related to the word Subgrade and, of course, Subgrade synonyms and on the right images related to the word Subgrade.

Definition of Subgrade

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Meaning of Subgrade from wikipedia

- In transport engineering, subgrade is the native material underneath a constructed road, pavement or railway track (US: railroad track). It is also called...
- (sleepers, British English) and ballast (or slab track), plus the underlying subgrade. It enables trains to move by providing a dependable surface for their...
- highway engineering, subbase is the layer of aggregate material laid on the subgrade, on which the base course layer is located. It may be omitted when there...
- directly above this layer. Otherwise, it is built directly on top of the subgrade. Typical base course thickness ranges from 100 to 150 millimetres (4 to...
- The California Bearing Ratio (CBR) is a measure of the strength of the subgrade of a road or other paved area, and of the materials used in its construction...
- 30. Hogentogler, C.A.; Terzaghi, K. (May 1929). "Interrelationship of load, road and subgrade". Public Roads: 37–64. Unified Soil classification System...
- sub-ballast above a prepared subgrade/formation (see diagram). It is designed primarily to reduce the stress on the subgrade. Other definitions include...
- subgrade. When building a three layer flexible pavement, the subbase layer is not used and the base course is placed directly on the natural subgrade...
- pavers. The first layer in the construction of such a surface is called the subgrade—this is the layer of native material underneath the intended surface. It...
- the ACR-PCR method is based on layered elastic analysis, uses standard subgrade categories for both flexible and rigid pavement, and eliminates the use...