ASTM D5199-11
(Test Method)Standard Test Method for Measuring the Nominal Thickness of Geosynthetics
Standard Test Method for Measuring the Nominal Thickness of Geosynthetics
SIGNIFICANCE AND USE
Thickness is one of the basic physical properties used to control the quality of many geosynthetics. Thickness values are required in calculation of some geotextile and geomembrane parameters such as permeability coefficients, tensile stress (index), and the like thickness is not indicative of field performance and therefore is not recommended for specifications.
The thickness of geotextiles and geomembranes may vary considerably depending on the pressure applied to the specimen during measurement. Where observed changes occur, thickness decreases when applied pressure is increased. To minimize variation, specific sample size and applied pressure are indicated in this method to ensure all results are comparable.
To determine the effect of difference pressure loadings on the measure thickness of geotextiles and geomembranes, use this test method.
This test method may be used for acceptance testing of commercial shipments of geotextiles and geomembranes, but caution is advised since information on between-laboratory precision is incomplete. Comparative tests, as directed in 5.4.1 may be advisable.
In case of a dispute arising from differences in reported test results when using this test method for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens that are as homogeneous as possible and that are formed from a lot of material of the type in question. The test specimens should be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using Student's t-test for unpaired data and an acceptable probability level chosen by the two parties before the testing is begun. If bias is found, either its cause must be found...
SCOPE
1.1 This test method covers the measurement of the nominal thickness of geotextiles, smooth surfaced geomembranes, geonets, and geocomposite drainage products.
1.2 This test method does not provide thickness values for geosynthetics under variable normal compressive stresses. This test method determines nominal thickness, not necessarily minimum thickness.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
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.
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Designation:D5199–11
Standard Test Method for
1
Measuring the Nominal Thickness of Geosynthetics
This standard is issued under the fixed designation D5199; 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 D4439. For definition of other textile terms used in this
standard, refer to Terminology D123.
1.1 Thistestmethodcoversthemeasurementofthenominal
3.2 Definitions:
thickness of geotextiles, smooth surfaced geomembranes, geo-
3.2.1 pressure, n—the force or load per unit area.
nets, and geocomposite drainage products.
3.2.2 thickness—(1) the distance between one planar sur-
1.2 This test method does not provide thickness values for
face and its opposite parallel and planar surface; (2) in the
geosyntheticsundervariablenormalcompressivestresses.This
textiles the distance between the upper and lower surfaces of
test method determines nominal thickness, not necessarily
the material, measured under a specified pressure and time.
minimum thickness.
1.3 The values stated in SI units are to be regarded as
4. Summary of Test Method
standard. The values given in parentheses are for information
4.1 The nominal thicknesses of geosynthetics is determined
only.
byobservingtheperpendiculardistancethatamovableplaneis
1.4 This standard does not purport to address all of the
displaced from a parallel surface by the geotextile or geomem-
safety concerns, if any, associated with its use. It is the
brane material while under a specified pressure (2 kPa for
responsibility of the user of this standard to establish appro-
geotextiles and 20 kPa for geomembranes for 5 s).
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Significance and Use
5.1 Thickness is one of the basic physical properties used to
2. Referenced Documents
2
controlthequalityofmanygeosynthetics.Thicknessvaluesare
2.1 ASTM Standards:
required in calculation of some geotextile and geomembrane
D123 Terminology Relating to Textiles
parameters such as permeability coefficients, tensile stress
D1776 Practice for Conditioning and Testing Textiles
(index), and the like thickness is not indicative of field
D2905 PracticeforStatementsonNumberofSpecimensfor
3 performance and therefore is not recommended for specifica-
Textiles
tions.
D4354 Practice for Sampling of Geosynthetics for Testing
5.2 The thickness of geotextiles and geomembranes may
D4439 Terminology for Geosynthetics
vary considerably depending on the pressure applied to the
D5199 Test Method for Measuring the Nominal Thickness
specimenduringmeasurement.Whereobservedchangesoccur,
of Geosynthetics
thickness decreases when applied pressure is increased. To
E691 Practice for Conducting an Interlaboratory Study to
minimize variation, specific sample size and applied pressure
Determine the Precision of a Test Method
are indicated in this method to ensure all results are compa-
3. Terminology rable.
5.3 To determine the effect of difference pressure loadings
3.1 For definitions of other terms relating to geotextiles and
on the measure thickness of geotextiles and geomembranes,
geomembranes used in this standard, refer to Terminology
use this test method.
5.4 This test method may be used for acceptance testing of
1
This test method is under the jurisdiction of ASTM Committee D35 on
commercial shipments of geotextiles and geomembranes, but
Geosynthetics and is the direct responsibility of Subcommittee D35.03 on Perme-
caution is advised since information on between-laboratory
ability and Filtration.
precision is incomplete. Comparative tests, as directed in 5.4.1
Current edition approved Feb. 1, 2011. Published March 2011. Originally
approved in 1991. Last previous edition approved in 2006 as D5199 – 01(2006).
may be advisable.
DOI: 10.1520/D5199-11.
5.4.1 In case of a dispute arising from differences in
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
reported test results when using this test method for acceptance
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
testing of commercial shipments, the purchaser and the sup-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
plier should conduct comparative tests to determine if there is
3
Withdrawn. The last approved version of this historical standard is referenced
on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5199–11
a statistical bias between their laboratori
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D5199–01 (Reapproved 2006) Designation:D5199–11
Standard Test Method for
1
Measuring the Nominal Thickness of Geosynthetics
This standard is issued under the fixed designation D5199; 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
1.1 This test method covers the measurement of the nominal thickness of geotextiles, smooth surfaced geomembranes, geonets,
and geocomposite drainage products.
1.2 This test method does not provide thickness values for geosynthetics under variable normal compressive stresses. This test
method determines nominal thickness, not necessarily minimum thickness.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
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
2
2.1 ASTM Standards:
D123 Terminology Relating to Textiles
D1776 Practice for Conditioning and Testing Textiles
D2905 Practice for Statements on Number of Specimens for Textiles
D4354 Practice for Sampling of Geosynthetics for Testing
D4439 Terminology for Geosynthetics
D5199 Test Method for Measuring the Nominal Thickness of Geosynthetics
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1
3.1 For definitions of other terms relating to geotextiles and geomembranes used in this standard, refer to Terminology D4439.
For definition of other textile terms used in this standard, refer to Terminology D123.
3.2 Definitions:
3.1.1geomembrane, n—an essentially impermeable membrane used with foundation, soil, rock, earth or any other geotechnical
engineering related material as an integral part of a man-made project, structure, or system.
3.1.2geotextiles, n—a planar product manufactured from polymeric material used with soil, rock, earth, or other geotechnical
engineering related material as an integral part of a man-made project, structure, or system.
3.1.3geotextiles, n—any permeable textile used with soil, rock, earth or any other geotechnical material as an integral part of
a man-made project, structure, or system.
3.1.4
3.2.1 pressure, n—the force or load per unit area.
3.1.5
3.2.2 thickness—(1) the distance between one planar surface and its opposite parallel and planar surface; (2) in the textiles the
distance between the upper and lower surfaces of the material, measured under a specified pressure and time.
3.1.6For definition of other textile terms used in this standard, refer to Terminology D123.
3.1.7For definitions of other terms relating to geotextiles and geomembranes used in this standard, refer to Terminology D4439.
1
This test method is under the jurisdiction of ASTM Committee D35 on Geosynthetics and is the direct responsibility of Subcommittee D35.03 on Permeability and
Filtration.
Current edition approved JuneFeb. 1, 2006.2011. Published June 2006.March 2011. Originally approved in 1991. Last previous edition approved in 20012006 as
D5199–01. DOI: 10.1520/D5199-01R06. – 01(2006). DOI: 10.1520/D5199-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
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D5199–11
4. Summary of Test Method
4.1 The nominal thicknesses of geosynthetics is determined by observing the perpendicular distance that a movable plane is
displaced from a parallel surface by the geotextile or geomembrane material while under a specified pressure (2 kPa for geotextiles
and 20 kPa for geomembranes for 5 s).
5. Significance and Use
5.1 Thickness is one of the basic physical properties used to control the quality of many geosynthetics. Thickness values are
required in calculation of some geotextile and geomembrane parameters such as permeability coefficients, tensile stress (index),
and the like thickness i
...
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