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Therefore, test apparatus dimensions and mass given in inch-pound units are regarded as the standard. 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.

In addition, they are representative of the significant digits that generally should be retained. 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.

However, balances or scales measure mass; and weight must be calculated. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

### ASTM D Standard

After the density has been astk, the unit weight is calculated in SI or inch-pound units, or both. However, balances or scales measure mass; and weight must be calculated. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors.

This implicitly combines two separate systems of units; that is, the absolute system and r gravitational system. After the density has been determined, the unit weight is calculated in SI or inch-pound units, or both.

The quality of the result produced by this standard is dependent on the competence of the asrm performing it, and the suitability of the equipment and facilities used. In the inch-pound system, it is common to assume that 1 lbf is equal to 1 lbm.

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

## ASTM D4253

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. This implicitly combines two separate systems of units; that is, the absolute system and the gravitational system. Astj addition, there are published data to indicate that these test methods have a high degree of variability.

Therefore, test apparatus dimensions and mass given in inch-pound units are regarded as the standard. In this system, the pound lbf represents a unit of force weight.

Density is mass per unit volume whereas unit weight is force per unit volume. See Section 3 for descriptions of terms. In this system, the pound lbf represents a unit of force weight. 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. In this standard density is given only in Qstm units.

## Active Risk Management

In this standard density is given only in SI units. Historical Version s – view previous versions of standard. Link to Active This link will always route to the current Active version of the standard. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single e.

Active view current version of standard. This standard has been r using the gravitational system of units when dealing with the inch-pound system. Users 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.

In the inch-pound system, it is common to assume that 1 lbf is equal to 1 lbm. Therefore, considerable engineering judgment must be used in relating the engineering properties of soil to the state of compactness. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design. 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.

Density is mass per unit volume whereas unit weight is force per unit volume.