ASTM D5779 / D5779M - 14

    Standard Test Method for Field Determination of Apparent Specific Gravity of Rock and Manmade Materials for Erosion Control

    Active Standard ASTM D5779 / D5779M | Developed by Subcommittee: D18.17

    Book of Standards Volume: 04.08


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    Significance and Use

    5.1 Riprap and armor material are composed of pieces of natural rock or manmade material that are placed on construction projects, shorelines, streambeds, bridge abutments, pilings and other structures to minimize the effects of erosion. The ability of rock or manmade material to withstand deterioration from weathering affects both the effectiveness of the project and its cost. The specific gravity and absorption provide useful information that can be used in evaluating possible deterioration of rock or manmade material.

    5.2 Test specimens equal in size to the proposed design size would provide the best correlations between laboratory tests and actual field performance; however, this is usually neither practical nor economically feasible.

    5.3 This test method has been used to evaluate different types of rocks and manmade material. There have been rare occasions when test results have provided data that have not agreed with the durability of rock or manmade material under actual field conditions.

    5.4 The results of this test is not to be used as the sole basis for determination of durability, but should be used in conjunction with the results of other tests.

    Note 1The quality of the result produced by this standard is dependent upon the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluation some of those factors

    1. Scope

    1.1 This test method covers the determination of the rapid specific gravity of rock or man-made materials for erosion control.

    1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

    1.3 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026, unless superseded by this standard.

    1.3.1 For purposes of comparing measured or calculated value(s) with specified limits, the measured or calculated value(s) shall be rounded to the nearest decimal or significant digits in the specified limits.

    1.3.2 The procedures used to specify how data are collected/recorded or calculated, in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives; and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering design.

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.


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

    ASTM Standards

    C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials

    D653 Terminology Relating to Soil, Rock, and Contained Fluids

    D3740 Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction

    D4753 Guide for Evaluating, Selecting, and Specifying Balances and Standard Masses for Use in Soil, Rock, and Construction Materials Testing

    D4992 Practice for Evaluation of Rock to be Used for Erosion Control

    D6026 Practice for Using Significant Digits in Geotechnical Data

    D6473 Test Method For Specific Gravity And Absorption of Rock For Erosion Control


    ICS Code

    ICS Number Code 13.080.20 (Physical properties of soil)

    UNSPSC Code

    UNSPSC Code


    Referencing This Standard

    DOI: 10.1520/D5779_D5779M

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D5779 / D5779M-14, Standard Test Method for Field Determination of Apparent Specific Gravity of Rock and Manmade Materials for Erosion Control, ASTM International, West Conshohocken, PA, 2014, www.astm.org

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