Soil classification deals with the systematic categorization of soils based on distinguishing characteristics as well as criteria that dictate choices in use. Soil classification is a dynamic …

The Official Soil Series Description (OSD) database is a national collection of more than 20,000 detailed soil series descriptions. These descriptions, in a text format, serve as a national …

Type A Soils are cohesive soils with an unconfined compressive strength of 1.5 tons per square foot (tsf) (144 kPa) or greater. Examples of Type A cohesive soils are often: clay, silty clay, …

Jan 2, 2026 · The two principal systems of soil classification in use today are the soil order system of the U.S. Soil Taxonomy and the soil group system, published as the World Reference Base …

Soil Classification concerns the grouping of soils with a similar range of properties (chemical, physical and biological) into units that can be geo-referenced and mapped.

Different systems have been developed in different countries, so in this section we will cover the basics of the classification system commonly used in the US, as well as the younger world …

In order to map soils, they must be classified! There are several soil classification systems around the world. In the United States, the USDA-NRCS Soil Taxonomy system is used. It is …

The Unified Soil Classification System (USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil. The classification system can be …

Nov 10, 2024 · Understanding soil classification is crucial for various applications, including agriculture, construction, environmental management, and land-use planning. It allows us to …

To ensure proper application of the criteria for classifying soils, the latest version of the “Keys to Soil Taxonomy ” is needed. In addition, this guide omits all information needed to classify soils …