The methods of sampling and testing as defined by this specification are those in effect April 1985 and may be
revised or altered by the individual railway company.
2.4.1.1 Method of Sampling
Field samples shall be secured in accordance with the current ASTM Methods of Sampling, designation D 75.
Test samples shall be reduced from field samples by the means of ASTM C 702.
2.4.1.2 Sieve Analysis
Sieve analysis shall be made in accordance with ASTM Method of Test, designation C 136.
2.4.1.3 Material Finer Than No. 200 Sieve
Material finer than the No. 200 sieve shall be determined in accordance with the ASTM Method of Test,
designation C 117.