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    ASTM D7401-08

    Standard Test Methods for Laboratory Determination of Rock Anchor Capacities by Pull and Drop Tests (Withdrawn 2017)

    Withdrawn Standard: ASTM D7401-08 | Developed by Subcommittee: D18.12


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    Withdrawn Rationale:

    These test methods cover the quantitative determination of the working and ultimate static or dynamic capacities of full scale rock anchors. Dynamic capacities are determined to simulate rockburst and blasting conditions The rock anchors are installed in steel pipe to simulate standard boreholes sizes. Rock anchor capacities are determined as a function of resin to steel bolt bond strength and steel bolt yield strength. These tests are not intended to determine rock anchor to borehole rock surface shear strength.

    Formerly under the jurisdiction of Committee D18 on Soil and Rock, these test methods were withdrawn in January 2017 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

    1. Scope

    1.1 These test methods cover the quantitative determination of the working and ultimate static or dynamic capacities of full scale rock anchors. Dynamic capacities are determined to simulate rockburst and blasting conditions (1). The rock anchors are installed in steel pipe to simulate standard boreholes sizes. Rock anchor capacities are determined as a function of resin to steel bolt bond strength and steel bolt yield strength. These tests are not intended to determine rock anchor to borehole rock surface shear strength.

    1.2 These test methods are applicable to mechanical, resin, or other similar anchor systems.

    1.3 Two methods are provided to determine the capacities of rock anchors, as follows:

    1.3.1 Method AUsing a horizontal hydraulically loaded pull test system.

    1.3.2 Method BUsing a vertical dynamically loaded drop test system.

    1.4 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.

    1.5 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D 6026.

    1.6 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

    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

    D4435 Test Method for Rock Bolt Anchor Pull Test

    D4436 Test Method for Rock Bolt Long-Term Load Retention Test

    D6026 Practice for Using Significant Digits in Geotechnical Data


    Referencing This Standard
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    DOI: 10.1520/D7401-08

    Citation Format

    ASTM D7401-08, Standard Test Methods for Laboratory Determination of Rock Anchor Capacities by Pull and Drop Tests (Withdrawn 2017), ASTM International, West Conshohocken, PA, 2008, www.astm.org

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