This standard is issued under the fixed designation D ; the number 1 This standard is under the jurisdiction of ASTM Committee D on Soil and Rock. GeoTesting Express is a provider of Soil Testing Services – ASTM D, Standard Test Methods for Maximum Index Density and Unit Weight of Soils Using a. All the Controls products ASTM D standard. Enter now!.

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After the density has been determined, the unit weight is calculated in SI or inch-pound units, or both. In this system, the pound lbf represents a unit of force weight.

Adtm of this standard are cautioned that compliance with Practice D does not in itself ensure reliable results. While reporting density is not regarded as nonconformance with this standard, unit weights should be calculated and reported since the results may be used to determine force or stress.

Link to Active This link will always route to the current Active version of the standard.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This standard has been written using the gravitational system of units when dealing with the inch-pound system. The adjective “dry before density or unit weight is omitted in the title and remaining portions of this standard to be consistent with the applicable definition given in Section 3 on Terminology.

## ASTM D4253

Therefore, test apparatus dimensions and mass given in inch-pound units are regarded as the standard. Link to Active This link will always route to the current Active version of the standard.

Therefore, considerable engineering judgment must be used in relating the engineering properties of soil to the state of compactness. While reporting density is not regarded as nonconformance with this standard, unit weights should be calculated and reported since the results may be used to determine force or stress. In the inch-pound system, it is common to assume that 1 lbf is equal to 1 lbm.

### ASTM D Standard

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of v standard. In this standard density is given only in SI units. Therefore, test apparatus dimensions and mass given in inch-pound units are regarded as the standard. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard.

See Section 3 for descriptions of terms. However, balances or scales measure mass; and weight must be calculated. In addition, there are published data to indicate that these test methods have a high degree of variability.

In addition, they are representative of the significant digits that generally should be retained. After the density has been determined, the unit weight is calculated in SI or inch-pound units, or both. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. However, balances or scales measure mass; and weight must be calculated. Density is mass per unit volume whereas unit weight is force per unit volume. However, the engineering properties, such as strength, compressibility, and permeability of a given soil, compacted by various methods to a given state of compactness can vary considerably.

Density is mass per unit volume whereas unit weight is force per unit volume. In this system, the pound lbf represents a unit of force weight. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design. Historical Version s – view previous versions of standard.

In this standard density is given only in SI units. Active view current version of standard. This standard has been written using the gravitational system of units when dealing with the inch-pound system.

This implicitly combines two separate systems of units; that is, the absolute system and the gravitational system. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

This implicitly combines two separate systems of units; that is, the absolute system and the gravitational system. In the inch-pound system, it is common to assume that 1 lbf is equal to 1 lbm. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard.