ASTM D653-26a provides authoritative terminology for soil, rock, and contained fluids used throughout ASTM Committee D18 standards. It includes definitions and related terminology covering geotechnical engineering, hydrogeology, groundwater, soil classification, rock mechanics, grouting, drilling, erosion control, consolidation, density, stress, unit weight, and other engineering applications. The standard also organizes terms into groupings and related-term listings and identifies selected definitions and symbols from the International Society for Rock Mechanics.
Application Scope: Use this reference for consistent interpretation and application of soil, rock, groundwater, geotechnical, and contained-fluid terminology in engineering, testing, construction, drilling, environmental monitoring, and related ASTM Committee D18 work.
