ISO 14688-2:2017 PDF Download

ISO 14688-2:2017 is a standard that provides the principles for classifying and identifying soil for geotechnical engineering purposes. It should be used in conjunction with ISO 14688-1, which provides rules for soil identification and description. The standard allows for the classification of soil into groups with similar composition and geotechnical properties based on field and laboratory test results. This classification helps determine the suitability of the soil for different engineering purposes.

The standard is applicable to natural soil in its original state, as well as soil that has been artificially reworked and synthetic materials. It should be noted that there may be variations in the classification criteria depending on local geological conditions. For more specific use in earthworks, a detailed classification is provided in EN 16907-2.

ISO 14688-2:2017 does not cover the identification and description of rocks, which are addressed in ISO 14689. Materials that are intermediate between soil and rock are classified using the procedures in ISO 14688-1 and ISO 14689 as appropriate. For other purposes such as pedology, soil protection, and remediation of contaminated areas, ISO 25177 should be referred to for soil identification and classification.