ASTM D4718 PDF

GeoTesting Express is a provider of Soil Testing Services – ASTM D, Standard Practice for Correction of Unit Weight and Water Content for Soils Containing. Calibration of Laboratory Mechanical-rammer Soil Compactors. Uploaded by. Pablo Antonio Valcárcel Vargas · ASTM D Hoja de Cálculo. Uploaded by. 15 Dec ASTM D/DM Standard Practice for Correction of Unit Weight and Water Content for Soils Containing Oversize Particles. standard.

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This standard has been written using the gravitational system of units when dealing with the inch-pound system. Historical Version s – view previous versions of standard. For some gradations, this interference may begin to occur at lower percentages of oversize particles, so the limiting percentage must be lower for these materials to avoid inaccuracies in the computed correction. However, the correction may not be of practical significance for soils with only small percentages of oversize particles.

This document cannot replace education or experience and should be used in conjunction with professional judgment. You may delete a document from your Alert Profile at any time. Add to Alert PDF. 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.

Sieve size is identified by its standard designation in Specification E However, the correction may not be of practical significance for soils with only small percentages of oversize particles. Your Alert Profile lists the documents that will be monitored.

The person or agency specifying this practice shall specify a minimum percentage of oversize particles below which the practice need not be applied. The person or agency using this practice shall determine whether a lower percentage is to be used.

Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects.

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This practice provides a mathematical equation for correcting the unit weight and water content of the finer fraction of a soil, tested to determine the unit weight and water content of the total soil. The alternative designation given in brackets is for information only and does not represent a different standard sieve size. This document cannot replace education or experience and should be used in conjunction with professional judgment.

Calculated values of percent compaction based on this correction practice will vary depending on which unit weight value is used for reference. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.

For some gradations, this interference may begin to occur at lower percentages of oversize particles, so the limiting percentage must be lower for these materials to avoid inaccuracies in the computed correction. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard. The person or agency specifying this practice shall specify a minimum percentage of oversize particles below which the practice need not be applied.

The person or agency specifying this practice shall specify a minimum percentage of oversize particles below which the practice need not be applied. Nat all aspects of this practice may be applicable in all circumstances. If a soil used in construction contains large particles, and only the finer fraction is used for laboratory tests, some method of correcting the laboratory test results to reflect the characteristics of the total soil is needed.

You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. In this system, the pound lbf represents a unit of force weight.

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However, the correction may not be of practical significance for soils with only small percentages of oversize particles. The practice also is considered valid when the oversize fraction is that portion retained on some other sieve, but the limiting percentage of oversize particles for which the correction is valid may be lower.

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The person or agency using this practice shall determine whether a lower percentage is to be used. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects. If the document is revised or amended, you will be notified by email.

Please first log in with a verified email before subscribing to alerts. It is beyond the scope of these test methods to consider significant digits used in analysis methods for engineering design.

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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part 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.

Link to Active This link will always route to the current Active version of the standard. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process.

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Users of this standard are cautioned that compliance with Practice D does not in itself ensure reliable atsm. The unit weight-water content relations determined by the tests reflect the characteristics of the actual material tested, and not the characteristics of the total soil material from which the test specimen was obtained.

We have no amendments or corrections for this standard. The person or agency using this practice shall determine whether a lower percentage is to be used. Combining values from the two systems may result in non-conformance with the standard.