ASTM D5093-02
(Test Method)Standard Test Method for Field Measurement of Infiltration Rate Using a Double-Ring Infiltrometer with a Sealed-Inner Ring
Standard Test Method for Field Measurement of Infiltration Rate Using a Double-Ring Infiltrometer with a Sealed-Inner Ring
SCOPE
1.1 This test method describes a procedure for measuring the infiltration rate of water through in-place soils using a double-ring infiltrometer with a sealed inner ring.
1.2 This test method is useful for soils with infiltration rates in the range of 1 x 107 m/s to 1 x 10-10 m/s. When infiltration rates ≥ 1 x 10-7 m/s are to be measured Test Method D 3385 shall be used.
1.3 All observed and calculated values shall conform to the guide for significant digits and rounding established in Practice D 6026.
1.3.1 The method used to specify how data are collected, calculated, or recorded in this standard is not directly related to the accuracy to which the data can be applied in design or other uses, or both. How one applies the results obtained using this standard is beyond its scope.
1.4 This test method provides a direct measurement of infiltration rate, not hydraulic conductivity. Although the units of infiltration rate and hydraulic conductivity are similar, there is a distinct difference between these two quantities. They cannot be directly related unless the hydraulic boundary conditions, such as hydraulic gradient and the extent of lateral flow of water are known or can be reliably estimated.
1.5 This test method can be used for natural soil deposits, recompacted soil layers, and amended soils such as soil bentonite and soil lime mixtures.
1.6 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.
1.7 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: D 5093 – 02
Standard Test Method for
Field Measurement of Infiltration Rate Using a Double-Ring
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Infiltrometer with a Sealed-Inner Ring
This standard is issued under the fixed designation D5093; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope * D653 Terminology Relating to Soil, Rock, and Contained
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Fluids
1.1 This test method describes a procedure for measuring
D3385 Test Method for Infiltration Rate of Soils in Field
the infiltration rate of water through in-place soils using a
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Using Double Ring Infiltrometers
double-ring infiltrometer with a sealed inner ring.
D3740 Practice for Minimum Requirements for Agencies
1.2 This test method is useful for soils with infiltration rates
−7 −10
Engaged in theTesting and/or Inspection of Soil and Rock
in the range of 1 310 m/s to 1 310 m/s. When infiltra-
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−7
Used in Engineering Design and Construction
tion rates $1 310 m/s are to be measured Test Method
D6026 Practice for Using Significant Digits in Geotechni-
D3385 shall be used.
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cal Data
1.3 All observed and calculated values shall conform to the
guideforsignificantdigitsandroundingestablishedinPractice
3. Terminology
D6026.
3.1 Definitions:
1.3.1 The method used to specify how data are collected,
3.1.1 infiltration—downward entry of liquid into a porous
calculated,orrecordedinthisstandardisnotdirectlyrelatedto
body.
theaccuracytowhichthedatacanbeappliedindesignorother
3.1.2 infiltration rate, I—quantity of liquid entering a po-
uses, or both. How one applies the results obtained using this
3 2
rous material (m ) per unit area (m ) per unit time (s),
standard is beyond its scope.
expressed in units of m/s.
1.4 This test method provides a direct measurement of
3.1.3 infiltrometer—a device used to pond liquid on a
infiltration rate, not hydraulic conductivity.Although the units
porous body and to allow for the measurement of the rate at
of infiltration rate and hydraulic conductivity are similar, there
which liquid enters the porous body.
is a distinct difference between these two quantities. They
3.1.4 For definitions of other terms used in this test method,
cannot be directly related unless the hydraulic boundary
see Terminology D653.
conditions, such as hydraulic gradient and the extent of lateral
flow of water are known or can be reliably estimated.
4. Summary of Test Method
1.5 This test method can be used for natural soil deposits,
4.1 The infiltration rate of water through soil is measured
recompacted soil layers, and amended soils such as soil
usingadouble-ringinfiltrometerwithasealedorcoveredinner
bentonite and soil lime mixtures.
ring (Fig. 1). The infiltrometer consists of an open outer and a
1.6 The values stated in SI units are to be regarded as
sealed inner ring. The rings are embedded and sealed in
standard. The values in parentheses are for information only.
trenches excavated in the soil. Both rings are filled with water
1.7 This standard does not purport to address all of the
such that the inner ring is submerged.
safety concerns, if any, associated with its use. It is the
4.2 The rate of flow is measured by connecting a flexible
responsibility of the user of this standard to establish appro-
bag filled with a known weight of water to a port on the inner
priate safety and health practices and determine the applica-
ring.Aswaterinfiltratesintothegroundfromtheinnerring,an
bility of regulatory limitations prior to use.
equal amount of water flows into the inner ring from the
flexible bag.After a known interval of time, the flexible bag is
2. Referenced Documents
removedandweighed.Theweightloss,convertedtoavolume,
2.1 ASTM Standards:
is equal to the amount of water that has infiltrated into the
ground. An infiltration rate is then determined from this
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ThistestmethodisunderthejurisdictionofASTMCommitteeD18onSoiland volume of water, the area of the inner ring, and the interval of
Rock and is the direct responsibility of Subcommittee D18.04 on Hydrologic
Properties of Soil and Rocks.
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Current edition approved July 10, 2002. Published September 2002. Originally Annual Book of ASTM Standards, Vol 04.08.
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published as D5093–90. Last previous edition D5093–90(1997). Annual Book of ASTM Standards, Vol 04.09.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5093–02
ratory hydraulic conductivity tests are recommended for stud-
iesoftheinfluenceoflevelofstressonthehydraulicproperties
of the soil.
NOTE 1—Thequality
...
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