ASTM D2937-17e2 PDF Download

The ASTM D2937-17e2 standard provides guidelines for determining the in-place density of soils using the drive-cylinder method. This test method is applicable to soils that do not contain significant particles larger than 4.75 mm and can be retained in the drive cylinder.

The standard emphasizes that larger drive cylinder volumes should be used to obtain accurate and reliable results, especially when the in-place density is used for acceptance purposes. The test method can also be used to obtain soil samples for testing other engineering properties.

However, the standard cautions that the precision of the test method depends on the competence of personnel, suitable equipment, and facilities. Compliance with ASTM Practice D3740, which evaluates testing factors, is important but not a guarantee of reliable testing. Factors such as organic or friable soils, highly plastic soils, noncohesive soils, and heavily compacted soils may affect the applicability and validity of the test method.

The standard also clarifies that it focuses on the determination of in-place density and water content for certain soils, and not on the procedures for selecting sampling locations or determining engineering properties.

In addition, the standard addresses the use of pounds as units of mass and force within the engineering/construction profession, explaining that the combination of the absolute and gravitational systems of units is scientifically undesirable. While the standard uses the gravitational system, the use of pounds for mass or density measurements is considered acceptable.

Lastly, the standard includes guidelines for significant digits and rounding, as established in Practice D6026, to ensure consistency and accuracy in reporting test results. However, it is noted that additional considerations, such as material variation and purpose for obtaining data, may require adjustments to the significant digits used. The standard does not cover significant digits for engineering design analysis methods.