What is EN ISO 22476-6:2021?

The European Standard EN ISO 22476-6:2021 is a part of the series of geotechnical investigation and testing standards, which provide guidelines for various geotechnical aspects. Specifically, EN ISO 22476-6 focuses on field testing within the field of geotechnical investigation and testing.

Scope of EN ISO 22476-6:2021

EN ISO 22476-6:2021 specifies requirements for carrying out and reporting cone penetration tests (CPTs) in soils. In geotechnical engineering, CPT is one of the most widely used in-situ testing methods to determine soil properties and evaluate ground conditions.

Key Components of CPT

In a cone penetration test, a cone penetrometer is pushed into the ground at a constant rate using specialized equipment. The cone penetrometer consists of a metal cone attached to a series of rods that record measurements during the test.

The key measurements obtained from a CPT include the cone resistance (qc), sleeve friction (fs), pore pressure (u2), and local friction angle (Φ). These parameters provide valuable information about the soil strength, density, and mechanical behavior.

Benefits and Applications

EN ISO 22476-6:2021 ensures standardized procedures and reporting formats, guaranteeing consistency and accuracy in cone penetration testing. This allows geotechnical professionals to compare results across different test locations and make informed decisions in design and construction projects.

Cone penetration testing is widely applied in various geotechnical engineering projects, including foundation design, soil classification, settlement analysis, slope stability assessment, and offshore exploration. Its non-destructive nature makes it a cost-effective and efficient method for assessing site conditions.

By following the guidelines outlined in EN ISO 22476-6:2021, geotechnical engineers and testing professionals can ensure reliable and consistent results when performing cone penetration tests. The standard contributes to the advancement of geotechnical engineering practices and improves the overall quality of geotechnical investigations.