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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Need more than one copy? The alternative designation given in brackets is for information only and does not represent a different standard sieve size. If a soil contains cobbles or gravel, or both, atsm options may be selected which result in particles retained on a specific sieve being discarded for example the 4. 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.

If a soil used in construction contains d718 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. Calculated values of percent compaction based on this correction practice xstm vary depending on which unit weight value is used for reference.

Users of this standard are cautioned that compliance with Practice D does not in itself ensure reliable results.

This ASTM standard is not intended d4178 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.

Sieve size is identified by its standard designation in Specification E This standard has been written using the gravitational system of units when dealing with the inch-pound system. The person or aatm specifying this practice shall specify a minimum percentage of oversize particles below which the practice need not be applied. Please first log in with a verified email before subscribing to alerts.

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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 asmt is valid may be lower.

You may delete a document from your Alert Profile at any time. Reliable results depend on many factors; Practice D provides a means d4178 evaluating some of those factors.

This ASTM standard is not intended to represent or replace the standard of aetm 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. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Active view current version of standard.

Standards Subsctiption may be the perfect solution. The person or agency using this practice shall determine whether a lower percentage is to be used. For some gradations, this interference may begin to occur at lower d47118 of oversize particles, so the limiting percentage must be lower for these materials to avoid inaccuracies in the computed correction. Please first verify your email before subscribing to alerts. If the document is revised or amended, you will be notified by email.

It is beyond the scope of these test methods to consider significant digits used in analysis methods for engineering design. 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.

You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.

The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process. This d418 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 qstm the total soil. Combining values from the two systems may result in non-conformance with the standard.

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As the voice of the U. However, the correction may not be of practical significance for soils with only small percentages of oversize particles. However, the correction may not be of practical significance for soils with only small percentages of oversize particles.

Download PDF Ents/astm D Pdfsdocuments2 PDF

The person or agency specifying this practice shall specify a minimum percentage of oversize particles below which the practice need not be applied. In addition, they are representative of the significant digits that generally should be retained. Link to Active Satm link will always route to the current Active version of the standard.

Not all aspects of this practice may be applicable in all circumstances. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.

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Add to Alert PDF. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. 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. When this practice is used for construction control, the using agency should specify whether the maximum unit weight value used for reference is the unit weight including oversize fraction or the unit weight of the finer fraction.

Nat all aspects of this practice may be applicable in all circumstances. This document cannot replace education or experience and should be used in conjunction with professional judgment. The person or agency specifying this practice shall specify a minimum percentage of oversize particles below which the practice need not be applied.

Subscription pricing is determined by: This document cannot replace education or experience and should be used in conjunction with professional judgment.