1、Designation:D815218Standard Practice forMeasuring Field Infiltration Rate and Calculating FieldHydraulic Conductivity Using the Modified Philip DunneInfiltrometer Test1This standard is issued under the fixed designation D8152;the number immediately following the designation indicates the year oforig
2、inal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice describes a procedure for field measure-ment of the infi
3、ltration rate of liquid(typically water)into soilsusing the modified Philip Dunne(MPD)infiltrometer.The datafrom the field measurement is then used to calculate the fieldhydraulic conductivity.Soils should be regarded as naturaloccurring fine or coarse-grained soils or processed materials ormixtures
4、 of natural soils and processed materials,or otherporous materials,and which are basically insoluble and are inaccordance with requirements of 5.1.1.2 This practice may be conducted at the ground surface orat given depths in pits,on bare soil or with vegetation in place,depending on the conditions f
5、or which infiltration rates aredesired.However,this practice cannot be conducted where thetest surface is at or below the groundwater table,a perchedwater table,or the capillary fringe.1.3 This practice is for soils within a range of infiltrationrate range defined in 5.1,as long as an adequate seal
6、can bemade between the MPD Infiltrometer base and the soil beingtested.In highly permeable soils,readings can be taken atshorter intervals,to ensure that enough data are collected todetermine the infiltration rate.1.4 The field measurement is a falling head test that can beperformed relatively quick
7、ly(30 to 60 minutes)in silty sand orclayey sand soils suitable for stormwater infiltration practices.It is suitable for testing several locations across a site,tocharacterize the spatial variability of the infiltration ratethroughout the site.1.5 The field measurement can be used to measure theinfil
8、tration rate,which can be used to calculate the fieldhydraulic conductivity.The field hydraulic conductivity can beused as an index to compare the suitability of soils for use inthe development of surface drainage applications(for example,rain gardens or stormwater fills).1.6 UnitsThe values stated
9、in SI units are to be regardedas the standard.No other units of measurement are to beincluded in this standard.1.7 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026.1.8 The procedures used to specify how data are collec
10、ted/recorded or calculated in this standard are regarded as theindustry standard.In addition,they are representative of thesignificant digits that generally should be retained.The proce-dures used do not consider material variation,purpose forobtaining the data,special purpose studies,or any conside
11、r-ations for the users objectives;and it is common practice toincrease or reduce significant digits of reported data to becommensurate with these considerations.It is beyond the scopeof this standard to consider significant digits used in analyticalmethods for engineering design.1.9 This standard do
12、es not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.10 This international
13、standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.R
14、eferenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD2216 Test Methods for Laboratory Determination of Water(Moisture)Content of Soil and Rock by Mass1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct respon
15、sibility of Subcommittee D18.04 on HydrologicProperties and Hydraulic Barriers.Current edition approved July 1,2018.Published August 2018.DOI:10.1520/D8152-18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTM
16、Standards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade
