ASTM D6243-98

D2487-17(2025)

Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)

D6072-08

Standard Practice for Obtaining Samples of Geosynthetic Clay Liners

D653-26a

Standard Terminology Relating to Soil, Rock, and Contained Fluids (Includes all amendments and changes 6/15/2026).

D1557-12(2021)

Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3 (2,700 kN-m/m3))

D2435-04

Standard Test Methods for One-Dimensional Consolidation Properties of Soils Using Incremental Loading

D698-12(2021)

Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/ft3 (600 kN-m/m3))

D3080-04

Standard Test Method for Direct Shear Test of Soils Under Consolidated Drained Conditions

D3740-26

Standard Practice for Minimum Requirements for Agencies Engaged in Testing of Soil and Rock as Used in Engineering Design and Construction

D4439-25a

Standard Terminology for Geosynthetics (Includes all amendments and changes 9/30/2025).