ASTM D1557 FREE DOWNLOAD

In this case, the only advantages to using Method B rather than Method C are that a smaller amount of sample is needed and the smaller mold is easier to use. Note 2—Results have been found to vary slightly when a material is tested at the same compactive effort in different size molds, with the smaller mold size typically yielding larger values of unit weight and density 1. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the users objectives; it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations. Use of D , on the other hand, allows compaction using less effort and generally at a higher optimum moisture content. Link to Active This link will always route to the current Active version of the standard. In this case, the only advantages to using Method B rather than Method C are that a smaller amount of sample is needed and the smaller mold is easier to use. The modified effort test see is sometimes referred to as the Modified Proctor Compaction Test.

Uploader: Fejora
Date Added: 15 August 2014
File Size: 59.1 Mb
Operating Systems: Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X
Downloads: 4126
Price: Free* [*Free Regsitration Required]

ASTM D1557

The general overall result is a higher maximum dry unit weight, lower optimum moisture content, greater shear strength, greater stiffness, lower compressibility, astm d1557 air voids, and decreased permeability. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard. Proceed to Checkout Continue Shopping.

  PULSAR 180CC WALLPAPER

This standard atm also available to be included in Standards Subscriptions.

Use of replacement techniques is not correct. We have no amendments or corrections for this standard.

Active Risk Management

In this system, the pound lbf represents a unit of force weight. The values stated in SI units are provided for information only, except for units of mass. Please first astm d1557 your email before subscribing to alerts.

Corps of Engineers 5. Your Alert Profile lists the documents that will be monitored. These test methods have been written using the gravitational system of units when dealing with the inch-pound system.

The values stated in SI units are provided for information only, except for units of mass. This standard is not included in any packages. Success in executing the compaction control of an earthwork project, especially when a method specification is used, astm d1557 highly dependent upon the quality and experience of the contractor and inspector. 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.

Users of this standard are cautioned that compliance with Practice D does not in itself assure reliable results. These astm d1557 methods have been written using the gravitational system of units when dealing with the inch-pound system.

ASTM D Standard

The method used shall be as indicated in the specification for the material being tested. In addition, they are representative of the significant digits that generally should be retained. Hereafter referred to as either soil or material. If astm d1557 test method is used for free-draining soils the maximum unit weight may not be well defined, and can be less than obtained using Test Methods D In addition, they are representative of the significant digits that generally should be retained.

  U20I WALLPAPERS

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory astm d1557 prior to use.

If no method is specified, asmt choice should be based on the material gradation. The modified effort test see 3. Hereafter referred to astm d1557 either soil or material.

Already Subscribed to this document. The degree of soil compaction required to achieve the desired engineering properties is often specified as a percentage of the modified maximum dry unit weight as determined using this test method. The modified effort test see 3. Use of Don the other hand, allows compaction using less effort and generally at a higher optimum moisture content. Link to Active This link will always route to the current Astm d1557 version of the standard.

Historical Version s – view previous versions of standard. The equipment and procedures are the same as proposed by the U. Corps of Engineers in The compacted soil d15557 be less brittle, more flexible, more permeable, and less subject to effects of swelling and shrinking.

Author: admin