Standard Specification for
Terms Relating to Subgrade,
Soil-Aggregate, and Fill Materials
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These definitions cover terms used in descriptions and specifications of materials occurring as or employed in the construction of subgrades, soil-aggregate base and surface courses, and fills.
The values stated in SI units are to be regarded as the standard.
Click below to download AASHTO Designation M 146 (2004) pdf free
Click here to download AASHTO Desig11ation. M 145-91 (2004) pdf free download
