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Standard Test Methods for Measuring the Opening Size of Geohazard NettingsTranslate name
STANDARD published on 15.1.2022
Designation standards: ASTM D8123-22
Publication date standards: 15.1.2022
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
geohazard netting, mesh opening size, net opening size,
|Significance and Use|
5.1Using 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.
5.2These test methods may be applied to other components of the geohazard netting, such as regularly spaced reinforcement elements or secondary mesh openings.
5.3These 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 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice does not in itself assure reliable results. Reliable results depend on many factors; Practice provides a means of evaluating some of those factors.
1.1These 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 nettings 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.
1.2UnitsThe 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.
1.3All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice .
1.3.1For 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.
1.3.2The 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 users 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.
1.4This 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.
1.5This 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.
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