ASTM D 4986 (Standard Guide for the Evaluation of Earthen Materials)

ASTM D 4986 is a standard guide that outlines methods for evaluating earthen materials, such as soil or clay, often used in construction or land development. It provides criteria for assessing properties like stability, moisture content, and composition to ensure these materials are suitable for their intended use. This guide helps engineers and builders make informed decisions about the quality and performance of earthen materials, which is crucial for safe and effective building practices. Overall, it serves as a benchmark for ensuring the reliability of natural materials in various applications.