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kf e 1y Designation: D 3385--94 -, �I NAL Standard Test Method for Infiltration Rate of Soils in Field Using Double-Ring C Infiltrorrmeter' E This standard isf issued under the fixed designation D 3385,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 reapprovak.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval. " LVii,standard has been approved for use by agencies of thi Deparment of Defense. 'If� �l. Scope 2. Referenced Documents 1.1 This test method describes a procedure for field mea- 2.1 ASTM Standards: Usurement of the rate.of infiltration of liquid (typically water) D 653 Terminology Relating to Soil, Rock, and Contained to soils using double-ring infiltrometer. Fluids 22 1.2 Soils should be regarded as natural occurring fine or D 1452 Practice for Soil Investigation and Sampling by coarse-grained soils or processed materials or mixtures of Auger Borings2 natural soils and processed materials,or other porous materials, D 2216 Method for Laboratory Determination of Water .:. Land which are basically insoluble and are in accordance with (Moisture) Content of Soil, Rock, and Soil-Aggregate requirements of 1.5. l Mixtures2 ` 1.3 This test method is particularly applicable to relatively D 2488 Practice for Description and Identification of Soils L uniform fine-grained soils}with an absence of very plastic(fat) Visual-Manual Procedure)' f clays and gravel-size particles and with moderate to low D 5093 Test Method for Field Measurement of Infiltration resistance to ring penetration. Rate Using a Double-Ring Infiltrometer With a Sealed L1.4 This test ethod[may be conducted at the ground Inner Rine surface or at given depths in pits, and on bare soil or.with 3. Terminology vegetation in place, depending on the conditions for which ;y!? infiltration rates are desired. However, this test method cannot 3.1 Definitions: ;. be conducted where the test surface is below the ground water 3.1.1 incremental infiltration velocity—the quantity of flow L table or perched water table. per unit area over an increment of time. It has the same units 1.5 This test method is difficult to use or the resultant data as the infiltration rate. ;t may be unreliable,or both,in very pervious or impervious soils 3.1.2 infiltration-the downward entry of liquid into the (soils with a hydraulic conductivity greater than about 10-2 soil. curls or less than about 1 X 10-6 cm/s) or,in dry or.stiff soils 3.1.3 infiltration rate---a selected rate, based on measured that most likely will fraciure when the rings are installed. For incremental infiltration velocities,at which liquid can enter the soils with hydraulic Lconductivity less than 1 X 10--6 cm/s refer soil under specified conditions, including the presence of an to Test Method D 5093. f excess of liquid..It has the dimensions of velocity (that is, 1.6 This test method cannot be used directly to determine cm cm h = cm h-'). the hydraulic conductivity (coefficient of permeability) of the 3.1.4 infiltrometer—a device for measuring the rate of entry sail (see 5.2). of.liquid into a porous body, for example, water into soil. , 1.7 The values stated in SI units are to be regarded as.the 3.1.5 For definitions of other terms used in this test method, stanfecr'y'rdco'ncerns, refer to Terminology D 653. r1.8 This standard does not purport to address all of the L if any, associated with its use. It is the 4. Sanatory of Test Method responsibility of the user of this standard to establish appro- 4.1 The double-ring infiltrometer method consists of driving priate safety and health,Practices and determine the applica- two open cylinders, one inside the other, into the ground, Lbili o,regulatory limitations prior to use: partially filling the rings with water or other liquid, and then ty f S ry maintaining the liquid at a constant level.The volume of liquid added to the inner ring,to maintain the liquid level constant is This test method is under the jurisdiction of ASTM Committee D-18 on Soil the measure of the volume of liquid that infiltrates the soil.The i and Rock and is the direct responsibility of Subeonuniuee Dl8.tl4 on hydrologic Properties of Soil and Rock_ i Curraot edition approved Sept_15,1994.Published November 1994,Originally Published as D 3385—75.Last previous edition D 3385—88. s Annual Book of ASTM Standards,Vol 04.08. i� Copyright 11 ASTM Yntemational,100 Barr Harbor Drive,PO Y3o11 0700,West Conshohocken,PA 19428-2959,MOW States. i 371 k �4