ASTM D8123-22
(Test Method)Standard Test Methods for Measuring the Opening Size of Geohazard Nettings
Standard Test Methods for Measuring the Opening Size of Geohazard Nettings
SIGNIFICANCE AND USE
5.1 Using a geohazard netting as a medium to retain rock particles necessitates compatibility between it and the adjacent rock. These test methods measure the opening size of a geohazard netting which may be used to estimate the largest size of rocks or other objects that may pass through the geohazard netting without transferring load to the wire mesh or wire net.
5.2 These test methods may be applied to other components of the geohazard netting, such as regularly spaced reinforcement elements or secondary mesh openings.
5.3 These test methods may also be used for quality control during the manufacturing process and quality assurance that materials supplied conform to project or material specifications.
Note 1: 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. 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 evaluating some of those factors.
SCOPE
1.1 These test methods are index tests to measure the opening size of a geohazard netting, or its components, or both, as it has been manufactured. They can be used for estimating the largest size of rock or other object that may pass through an individual opening in the geohazard netting without transferring load to the wire mesh or wire net and may also be used for quality control purposes. These test methods are not used to determine the maximum size rock or other object that the geohazard netting may contain through mobilization of the netting’s strength. These test methods do not apply to the measurement of the opening size of a geosynthetic, such as a turf reinforcement mat or geotextile, that may be manufactured as a composite system with the geohazard netting.
1.2 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only and are not considered standard. Reporting of test results in units other than SI shall not be regarded as nonconformance with this standard.
1.3 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026.
1.3.1 For purposes of comparing a measured or calculated value(s) with specified limits, the measured or calculated value(s) shall be rounded to the nearest decimal of significant digits in the specified limit.
1.3.2 The procedures used to specify how data are collected/recorded or calculated in the 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 objective; 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 analysis 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT...
General Information
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D8123 − 22
Standard Test Methods for
1
Measuring the Opening Size of Geohazard Nettings
This standard is issued under the fixed designation D8123; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 These test methods are index tests to measure the
responsibility of the user of this standard to establish appro-
openingsizeofageohazardnetting,oritscomponents,orboth,
priate safety, health, and environmental practices and deter-
as it has been manufactured. They can be used for estimating
mine the applicability of regulatory limitations prior to use.
the largest size of rock or other object that may pass through an
1.5 This international standard was developed in accor-
individual opening in the geohazard netting without transfer-
dance with internationally recognized principles on standard-
ring load to the wire mesh or wire net and may also be used for
ization established in the Decision on Principles for the
quality control purposes. These test methods are not used to
Development of International Standards, Guides and Recom-
determine the maximum size rock or other object that the
mendations issued by the World Trade Organization Technical
geohazard netting may contain through mobilization of the
Barriers to Trade (TBT) Committee.
netting’s strength. These test methods do not apply to the
measurement of the opening size of a geosynthetic, such as a
2. Referenced Documents
turf reinforcement mat or geotextile, that may be manufactured
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as a composite system with the geohazard netting. 2.1 ASTM Standards:
D653 Terminology Relating to Soil, Rock, and Contained
1.2 Units—The values stated in SI units are to be regarded
Fluids
as standard. The values given in parentheses are provided for
D3740 Practice for Minimum Requirements for Agencies
information only and are not considered standard. Reporting of
Engaged in Testing and/or Inspection of Soil and Rock as
test results in units other than SI shall not be regarded as
Used in Engineering Design and Construction
nonconformance with this standard.
D6026 Practice for Using Significant Digits and Data Re-
1.3 All observed and calculated values shall conform to the
cords in Geotechnical Data
guidelines for significant digits and rounding established in
Practice D6026.
3. Terminology
1.3.1 For purposes of comparing a measured or calculated
3.1 Definitions:
value(s) with specified limits, the measured or calculated
3.1.1 For definitions of common technical terms used in this
value(s) shall be rounded to the nearest decimal of significant
standard, refer to Terminology D653.
digits in the specified limit.
1.3.2 Theproceduresusedtospecifyhowdataarecollected/
3.2 Definitions of Terms Specific to This Standard:
recorded or calculated in the standard are regarded as the 3.2.1 geohazard netting opening, n—in geohazard
industry standard. In addition, they are representative of the mitigation, the minimum clear distance between the wires or
significant digits that generally should be retained. The proce- wire ropes forming the mesh structure.
dures used do not consider material variation, purpose for
3.2.2 geohazard netting opening size, n—in geohazard
obtaining the data, special purpose studies, or any consider-
mitigation, the measurement of the minimum clear distance
ations for the user’s objective; and it is common practice to
between the wires or wire ropes forming the opposite sides of
increase or reduce significant digits of reported data to be
the wire mesh or net opening.
commensuratewiththeseconsiderations.Itisbeyondthescope
3.3 Definitions:
of this standard to consider significant digits used in analysis
3.3.1 geohazard netting, n—in geohazard mitigation, a ma-
methods for engineering design.
terial made typically from steel wire, or wire ropes, or both,
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This test method is under the jurisdiction ofASTM Committee D18 on Soil and
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Rock and is the direct responsibility of Subcommittee D18.25 on Erosion and For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Sediment Control Technology. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Jan. 15, 2022. Published January 2022. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
D8123-22. the ASTM website.
Copyright © ASTM I
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