Designation:D7263–09Standard Test Methods for Laboratory Determination of Density (Unit Weight) of Soil Specimens1 This standard is issued under the fixed designation D7263; 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 ( ´) indicates an editorial change since the last revision or reapproval. 1. Scope otheruses,orboth.Howoneappliestheresultsobtainedusing 1.1 These test methods describe two ways of determining this standard is beyond its scope. the total/moist and dry densities (unit weights) of intact, 1.4 This standard does not purport to address all of the disturbed, remolded, and reconstituted (compacted) soil speci- safety concerns, if any, associated with its use. It is the mens.Density(unitweight)asusedinthisstandardmeansthe responsibility of the user of this standard to establish appro- same as “bulk density” of soil as defined by the Soil Science priate safety and health practices and determine the applica- Society of America. Intact specimens may be obtained from bility of regulatory limitations prior to use. thin-walled sampling tubes, block samples, or clods. Speci- 2. Referenced Documents mens that are remolded by dynamic or static compaction procedures may also be measured by these methods. These 2.1 ASTM Standards: 2 methods apply to soils that will retain their shape during the D653 Terminology Relating to Soil, Rock, and Contained measurement process and may also apply to other materials Fluids such as soil-cement, soil-lime, soil-bentonite or solidified D698 TestMethodsforLaboratoryCompactionCharacter- 3 soil-bentonite-cement slurries. It is common for the density istics of Soil Using Standard Effort (12 400 ft-lbf/ft (600 3 (unit weight) of specimens after removal from sampling tubes kN-m/m )) and compaction molds to be less than the value based on tube D854 Test Methods for Specific Gravity of Soil Solids by or mold volumes, or of in-situ conditions. This is due to the Water Pycnometer specimen swelling after removal of lateral pressures. D1557 Test Methods for Laboratory Compaction Charac- 1.1.1 Method A covers the procedure for measuring the teristics of Soil Using Modified Effort (56,000 ft-lbf/ volume of wax coated specimens by determining the quantity ft3(2,700 kN-m/m 3)) of water displaced. D1587 Practice for Thin-Walled Tube Sampling of Soils 1.1.1.1 Thismethodonlyappliestospecimensinwhichthe for Geotechnical Purposes wax will not penetrate the outer surface of the specimen. D2166 Test Method for Unconfined Compressive Strength 1.1.2 MethodBcoverstheprocedurebymeansofthedirect of Cohesive Soil measurement of the dimensions and mass of a specimen, D2216 Test Methods for Laboratory Determination ofWa- usually one of cylindrical shape. Intact and reconstituted/ ter (Moisture) Content of Soil and Rock by Mass remolded specimens may be tested by this method in conjunc- D2487 Practice for Classification of Soils for Engineering tionwithstrength,permeability(air/water)andcompressibility Purposes (Unified Soil Classification System) determinations. D2488 Practice for Description and Identification of Soils 1.2 The values stated in SI units are to be regarded as the (Visual-Manual Procedure) standard. The values stated in inch-pound units are approxi- D3550 Practice for Thick Wall, Ring-Lined, Split Barrel, mate. Drive Sampling of Soils 1.3 All observed and calculated values shall conform to the D3740 Practice for Minimum Requirements for Agencies guidelines for significant digits and rounding established in Engaged in Testing and/or Inspection of Soil and Rock as Practice D6026. Used in Engineering Design and Construction 1.3.1 The method used to specify how data are collected, D4220 Practices for Preserving and Transporting Soil calculated,orrecordedinthisstandardisnotdirectlyrelatedto Samples the accuracy with which the data can be applied in design or D4318 Test Methods for Liquid Limit, Plastic Limit, and 1 2 ThesetestmethodsareunderthejurisdictionofASTMCommitteeD18onSoil For referenced ASTM standards, visit the ASTM website, www.astm.org, or and Rock and are the direct responsibility of Subcommittee D18.03 on Texture, contactASTM Customer Service at
[email protected]. For Annual Book of ASTM Plasticity and Density Characteristics of Soils. Standards volumeinformation,refertothestandard’sDocumentSummarypageon Current edition approved March 15, 2009. PublishedApril 2009. theASTM website. 1 etc.1.1 Refer to Terminology D653 for standard definitions of have density values in the range of 0.4 Apparatus for Preparing Reconstituted or Remolded Specimens (Optional) —Such apparatus is only required if 3 Available online: www. etc. dry given off by molten wax ignite spontaneously above 205°C density can be used to calculate porosity and void ratio (see (400°F)andshouldnotbeallowedtocomeincontactwiththe Appendix X1). ablyoftheforced-drafttype. The basket is soilvolumeshrinkswithdryingofswellingsoils. 5. dependent on the competence of the personnel performing it and the 5. Practice 5. and data sheets provided as required.2 Densities (unit weights) of remolded/reconstituted 5. 5.1.1. cautioned that compliance with Practice D3740 does not in itself assure reliable results. Warning—Vapors specific gravity (Test Methods D854) is also known.bulkdensity suspendedfromthebalancebyafinethreadorstring.. 5.2.1 For MethodAthe following apparatus are required: to determine the height and width or diameter of the specimen 5. line. trimming tools.soils.Sincemoisturecontent 5. preferably thermostatically controlled. 4. Terminology NOTE 2—The waxes generally used are commercially available and 3. forming a uniform surface coating of wax. a nylon D6026 Practice for Using Significant Digits in Geotechni.1.poundspercubicyard. determiningdegreeofsoilcompaction. Reliable results depend on several factors.5 WireBasket —Awirebasketof3. specimens.1.1 Balance—See 5. paraffin and/or microcrystalline Soil Science Society of America Glossary of Soil Science wax that has a known and constant density. This is usually accom- D4753 Guide for Evaluating.2. 3. 0.7 Specimen Container —A corrosion-resistant container values are usually used in conjunction with compaction curve of sufficient size to contain the specimen for water content values (Test Methods D698 and D1557).1.91 g/cm 3 or Mg/m 3. Hence.87 to 0.moistsoildensityprovideslittleusefulinformation of approximately equal width and height of sufficient size to except to estimate the weight of soil per unit volume.1 Dry density. Agencies that meet the holder for moving and handling hot containers. the balance must be capable of measuring the mass pers for measuring the diameter of cylindrical specimens. determination. 5.3 Specimen-Size Measurement Devices —Devices used 5. Significance and Use shouldnotallowthewaxtooverheat. 2.2.2.1 g readability is required for specimens having a mass over 200 grams. the water content of may also be used in lieu of the basket for smaller soil the soil should be determined at the time of sampling. to four Terms3 significant figures and that does not change after repeated melting and cooling cycles.6 Container—A container or tank of sufficient size to specimens are commonly used to evaluate the degree of contain the submerged basket and specimen. Users of this standard are men containers.3 Wax—Non-shrinking.35mmorfinermesh isvariable. or a yoke assemblage is placed upon the pan which Construction Materials Testing suspends a thin. 4. non-absorbent string or wire. compaction of earthen fills.10 Miscellaneous—Paintbrush.Since prevent trapping air when it is submerged.1.1.Acontainerheatedbyhot 4. that is.8 Thermometer—Capableofmeasuringthetemperature determining the mass composition/phase relations of soil. D 7263 – 09 Plasticity Index of Soils of the specimen suspended in water. Selecting. prefer- E2251 Specification for Liquid-in-GlassASTMThermom.1. Dry density measurements are also useful for heating element or open flame.Ahairnet will vary with moisture content.1.AClass GP1 balance of digits and shall be constructed so that their use will not indent 0. Terminology D653 and “bulk density” by soil scientists. for contain the specimen. as defined as “density of soil or rock” in water. rr. and Specifying plished by a weighing hook built into the balance for that Balances and Standard Masses for Use in Soil.atthetimeofsampling. embankments. to 200 grams and a Class GP2 balance of 0.9 Container Handling Apparatus —Gloves or suitable suitability of the equipment and facilities used. Apparatus 5. terms.org/sssagloss/index. speci- and objective testing/sampling/inspection/etc. criteriaofPracticeD3740aregenerallyconsideredcapableofcompetent 5.4 Wax-Melting Container —Used to melt the wax. cal Data 5.2 Drying Oven —See 5.1. see range within which the test is being performed graduated in a Appendix X1. and purpose.php.1. Rock.1. these types of specimens are being tested. For NOTE 3—Circumferentialmeasuringtapesarerecommendedovercali- methodA. The basket shall be constructed to example.capableofmaintainingauniform eters with Low-Hazard Precision Liquids temperature of 110 6 5°C throughout the drying chamber. 2 .Whenparticledensity. below the balance into the water reservoir. is satisfactory.1 degree C division scale and meeting the requirements of NOTE 1—The quality of the result produced by this standard is Specification E2251.01 g readability is required for specimens having a mass up or penetrate into the specimen.3 Density (unit weight) is one of the key components in 5. but 4. can The wax should be heated to only slightly above the melting be used to convert the water fraction of soil from a mass basis pointtoavoidflashingofthewaxvaporsandtopermitquickly toavolumebasisandvise-versa.2. Dry density 5.2 Other Reference: 5.2 Drying Oven —A thermostatically controlled.thatis. 5.1 Balance—Allbalancesmustmeettherequirementsof shall measure the respective dimensions to four significant Specification D4753 and this section.2 For Method B the following apparatus are needed: D3740 provides a means of evaluating some of these factors. thebalancemusthave airtight containers at a temperature between approximately 3° been previously balanced (tared to zero) with the wire basket and 30°C and in an area that prevents direct contact with completely submerged in the container of water.) and the largest the same as when calibrated or zeroed. for most samples.2. change in shape.specimencontainers. Samples and Test Specimens 7. miter may cause the moisture to vaporize and form air bubbles under the wax.placethespeci- firstcoathashardened.3 If required. visual observations indicate that larger NOTE 6—Thewatercontentmaybedeterminedfromanadjacentpiece particlesthanpermittedarepresent. disturbance. orothersuitabledevice. being pulled out should be patched carefully with material from the trimmings. 7.1. see 7. steel straightedge.3.2 from the sample to be tested.anddata Bubbles may be trimmed out and filled with wax. Handle 7.2.1. enclosure. Specimens shall NOTE 5—Maintainwaterbathtemperatureandsubmergedbasketdepth have a minimum dimension of 30 mm (1. sample type (that is. the density samples/specimenscarefullytominimizedisturbance.2.1 largest particle size shall be smaller than one-sixth of the percent in accordance with Method D2216. changes in water content are 7.2 Trim specimens in an environment that minimizes minimized by trimming specimens.2. container of melted wax.1 degrees C. When the sample 7. Typically.9 Remove the wax from the specimen.). This is done by placing the specimen in a wire basket soil.1 Intact Specimens —Prepare intact specimens from such as project.1 Determine. sheets shall be provided as required.3 Afterobtaininguniformdimensions.ifthewaxbecomes the remarks section of the report of test data.orchangeinwatercontent. trimmed.If. perpendiculartothelongitudinalaxisofthesamplingtube.2.indicatethisinformationin ofsoilorfromtrimmingsifappropriate. or change in water content. Procedure 7. incrosssection. Re-entrant angles height and inner dimensions of the tube may be taken to should be avoided.3 Method B—Direct Measurement : 7. any change in water content. boxandverticaltrimminglathe.)orlarger. procedure if Method A is used.2.1.2 Prepare specimens in an environment that minimizes are usually cubical or cylindrical in shape. wax-coated specimen ( Msub) to four significant digits in g or ported in accordance with Practice D4220 Groups C and D kg. In order to directly measure the samples that are stored prior to testing in non-corrodible submergedmassofthewetsoilandwax. such as Practice D3550.Apply a second coat of wax after the 7. Specimens can be obtained 7.Thewaxshouldbesufficientlywarmto men in a miter box or trimming collar (especially for friable flowwhenbrushedonthespecimen.the 7. withoutextrusionexceptforcuttingtheendsurfacesplaneand ments given in 6.3). anychangesinwatercontent. visual soil classification (Practice with Practice D1587 or other acceptable tube sampling pro- D2488).3. specimen’ssmallestdimension.3.2.4 Determine and record the moist mass of the soil the surface of the specimen.2.8in.it carving tools including a wire saw. gravel or crumbling resulting from trimming causes voids on 7. large block samples or from samples secured in accordance tube. and any cavities formed by large particles represent specimen dimensions. Maintain the in a container of water. such as a controlled high-humidity room/ compression. For off after a break is made in the wax surface. difficult to remove from the specimen. cohesive and firm to maintain shape during the measuring 7. Wet soils tend to be more plastic and subject to environment.1.1. specimenshavingadimensionof72mm(2. that the specimen and basket is fully submerged. such as a controlled high-humidity room/enclosure.The trim the specimen to a fairly regular shape. etc. 7.2 Method A—Water Displacement : from intact block samples using a sharp cutting ring. 6.1.Specimens 7.7 Determine and record the submerged mass of the 6.changes of the wax to be used to four significant digits (see 5.3. particle contained within the test specimen shall be smaller 7.aftercompletionofateston an intact specimen.5 Miscellaneous Apparatus —Specimen trimming and NOTE 4—Ifoverheatedwaxcomesincontactwiththesoilspecimen. in a controlled environ.10 Determine the water content to the nearest 0.1.2. cedures. Handle specimens carefully to minimize NOTE 8—Some soils may expand into the sampling tube with a resultant change in volume from the original in-situ condition. depth.Forsomesoils. 7. condition permits. 3 . remolded soil obtained from the trimmings.yetitshouldnotbesohot soils)andcutthespecimentoauniformheightwithawiresaw that it dries the soil.3 in.forexample.1 Samples—Intact samples shall be preserved and trans. D 7263 – 09 5. Make sure sunlight.2.2 Specimens—Specimens for testing shall be sufficiently basket is not touching the sides or bottom of the container.changesinwater NOTE 7—Core sampling might be difficult or impossible in gravelly or content are minimized by trimming specimens in a controlled hard dry soils.1 Specimensobtainedbytubesamplingmaybetested 7. If required.8 Record the temperature of the water to 0.suchasasharpenedsteelstraightedge. boring number.1 Record all identifying information for the specimen. 7. if not previously established.2. carefully fill the voids with specimen ( Mt) to four significant figures in g or kg.6 Determine and record the mass of the wax-coated specimen in air ( MC) to four significant figures in g or kg. and that the 6.1.5 Cover the specimen with a thin coat of melted wax. Note in the report if water content is not from the specimen itself. or other pertinent data. Where removal of ment. cut a specimen meeting the size require.2. Compacted or remolded specimens shall be preserved in hookedontoabalanceandimmersingthebasketandspecimen accordance with Practice D4220 Group B soil. see 1. a vertical trimming lathe may be used to either with a paintbrush or by dipping the specimen in a reduce cylindrical specimens to a uniform diameter.2. It can be peeled than one-tenth of the specimen’s smallest dimension.see6. or reconstituted (compacted). 9.03isseekingpertinentdatafromusersofthetestmethod. mm. Subcommittee rm 5 ~ M t / V ! (2) D18.) 8. describes a procedure for four significant digits. 8. g.2.2 Calculatethemoistdensitytofoursignificantfiguresas elevation in meters (feet) (if applicable). 9.2.Thisoccursasaresultofthespecimenswellingafterremoval of the lateral confinement due to the mold. Table1).2 Bias—Sincethereisnotanacceptedreferencematerial where: suitable for measuring the bias for this procedure.2 Remolded/Reconstituted (Compacted) Specimens — significant figures for either methodAor B as follows: Specimens shall be prepared as prescribed by the individual gm 5 62. 8. h = average height. g/cm or Mg/m3.4 Moist/total and dry density (unit weight).1 Identification of the sample (material) being tested. porosity.2 Sampledepthinmeters(feet)belowgroundsurfaceor 8. D 7263 – 09 Performoneormorewatercontentdeterminationsonmaterial d = average specimen diameter.2. NOTE 10—It is common for the density (unit weight) of the specimen 9.. and 10. if deter- 8. and obtained during the trimming of the specimen in accordance h = average specimen height.1. remove the mold.3 Classification of soil by Practice D2487.3.3 Calculate the dry density for either method A or B as and at least three diameter measurements at the quarter points follows: of the height shall be made to determine each the average rd 5 rm / ~1 1 w /100 ! (5) height and diameter of cylindrical specimens. with Test Method D2216 for the estimated water content(s). disturbed. on bias cannot be made. molded. follows: 9.2. sample number. A minimum of three height measure. section 6.1 Cylindrical Shape : V 5 ~p d2 h! /4000 (3) 11. w —Calculate in accordance with Test container number. w = average width.80665 rm inkN/m and gd 5 9. and determine the mass and dimensions of the test specimens where: gm = moist/total unit weight of specimen.2. and inaccordancewith7. where: void ratio 4 . and ratus described in 5. and w = watercontentofsoilspecimen(inpercent). saturation. 9. Test Methods D4318.1. test number.1. Method D2216 to four significant digits. Mc = mass of wax-coated specimen.1 The report (data sheet) shall contain the following (see ofthemold. and Msub = mass of submerged paraffin-coated specimen.7 Whether the specimen was intact. g. 8. g/cm 3 or Mg/m 3. 8.1 density. re- rr = density of paraffin. Mt = mass of moist/total soil specimen.2. Keywords 11. specimen. mm.90°apartiffour. to four significant digits.2.After a specimen is formed. trim (if necessary) the gm 5 9.1. mm.6 Method used (Aor B).2 Method B—Direct Measurement : specimens is being determined. the mold may be taken to represent specimen dimensions. methodformeasuringthedensity(unitweight)ofcohesivesoil 8.etc. specimen to four significant digits using the applicable appa. boring number.orvisualclassificationofsoil(groupnameandsymbol) as determined by Practice D2488. A minimum of three measurements each of length. 8.1 Method A—Water Displacement : mined.4 Calculate the moist/total and dry unit weights to four 7.Theheightandinnerdimensionsof gd = dry unit weight of soil specimen. In addition. (see Test Methods D854. g/cm 3 or Mg/m 3. ments(approximately120°apartifthree. 3 rw = density of water at test temperature.tonearest NOTE 9—Test Method D2166. preparing intact test specimens for strength testing.2 Cubical Shape : Final water content shall be performed on the whole specimen V 5 ~l w h! /4000 (4) orrepresentativeslice(ifothertestingsuchasplasticitylimits. where: Determineandrecordthemass(g)anddimensions(mm)ofthe l = average length.5 Water content (in percent).1. g/cm or 10.2. etc. Appendix X2 andAppendix X3): 9. mm. a statement 3 V = volume of moist soil specimen. rm 5 Mt / @~~Mc – Msub!/rw! – ~~Mc – Mt!/rr!# (1) 9. width and height shall be where: made to determine the volume of cubical specimens.1.80665 rd inkN/m ends perpendicular to the longitudinal axis.3.1.1. unit weight.1 Precision—The precision of the procedure in this test Mg/m3. mm.428 rd inlbf/ft 3 (6) assigningthetestorasprescribedbytheapplicablerelatedtest 3 3 procedure.3.428 rm inlbf/ft 3 and gd 5 62.1 Water Content. 10. Calculations such as project. to four where: significant digits. 9. g. Report: Test Data Sheet/Form afterremovalfromthemoldtobelessthanthevaluebasedonthevolume 9. are required) at the end of the test. Precision and Bias 3 rm = density of total (moist) soil specimen. cm . rd = dry density of soil. Md Vv = volume of voids in soil specimen. %. VOID RATIO.1 Let: X1. %. D 7263 – 09 APPENDIXES (Nonmandatory Information) X1. s n 5 V 3 100 5 V 3 100 5 V 3 100 5 1 1 e 3 100 e = void ratio. s s d w = water content of soil specimen. cm 3. Mg/m . S5G –r 5 e (X1. cm 3 . Gs Gs = specific gravity of soil solids in soil specimen as wGsrd Gsw determined by Test Methods D854. g. and Md = dry mass of soil in soil specimen. RELATIONSHIPSAMONG SOILPHASES.2) Vs = volume of solids in soil specimen. 5 . (X1. %.1) S = saturation. & SATURATION USING METRIC UNITS X1.3) 3 s d rd = dry density of soil specimen. V = volume of soil specimen.2 Then: Md Vv V – Vs V– G e n = porosity. POROSITY. cm . V v V – V s V – Gs n Gsw 3 e 5 V 5 V 5 M 5 100– n 5 S (X1. TESTTEMPERATURE OF WATER. T.4 gd VOID RATIO = ~V–V s! /V s e POROSITY. POROSITY. DEPTH/ELEV. MAY BE COMPUTEDAS FOLLOWS: M d 5 Mt / ~1 1 0. TARE NO. SAMPLE NO.% = @~V–V s! /V] 3 100 n % % % % DEGREE OF SATURATION = @Vw / ~V–V s!# 3 100 S % % % % VOLUME OF WAX = WEIGHT OF WAX / SPECIFIC GRAVITY OF WAX = C VOLUME OF WATER = V w =M w / SPECIFIC GRAVITY OF WATER A IF NOT MEASURED DIRECTLY. VOID RATIO.01w! B ~WTOFWETSOIL&WAXINAIR ! – ~WTOFWETSOIL&WAXINWATER ! VOLUME OF WET SOILAND WAX = DENSITYOFWATERATTESTTEMPERATURE C SPECIFIC GRAVITY OF WATER IN METRIC SYSTEM = 1 (APPROX) REMARKS COMPUTED BY CHECKED BY 6 . EXAMPLE DATASHEET DISPLACEMENT METHOD—A UNIT WEIGHTS.4 gm CU FT DRY UNIT WEIGHT = ~Md /V ! 3 62. DESCRIPTION OF SAMPLE WATER CONTENT SAMPLE OR SPECIMEN NO. TARE PLUS WET SOIL TARE PLUS DRY SOIL MASS WATER Mw IN GRAMS TARE DRY SOIL Md WATER CONTENT w % % % % WEIGHT-VOLUME RELATIONS SAMPLE OR SPECIMEN NO. °C SOILAND WAX INAIR WET SOIL Mt MASS WAX IN GRAMS WET SOILAND WAX IN WATER DRY SOIL A Md SPECIFIC GRAVITY OF SOIL Gs WET SOILAND WAX B VOLUME WAX IN CC WET SOIL V DRY SOIL= M d /G s Vs LBS PER WET UNIT WEIGHT = ~Mt /V ! 3 62. LOCATION BORING NO. D 7263 – 09 X2.AND DEGREE OF SATURATION (DISPLACEMENT METHOD—A) NAME DATE JOB NO. TARE NO. HEIGHT OF CYLINDER H CENTIMETERS INSIDE DIAMETER OF CYLINDER D WET SOILAND TARE MASS TARE IN GRAMS WET SOIL Mt DRY SOIL A Md SPECIFIC GRAVITY OF SOIL Gs VOLUME WET SOIL(VOLUME OF CYLINDER) IN CC DRY SOIL= M d /G s Vs LBS PER WET UNIT WEIGHT = ~Mt /V ! 3 62. or through the ASTM website (www. V = ( pD2H) / 4 B VOLUME OF WATER = V w =M w / SPECIFIC GRAVITY OF WATER A IF NOT MEASURED ON ENTIRE SPECIMEN.POBoxC700.org). DESCRIPTION OF SAMPLE WATER CONTENT SAMPLE OR SPECIMEN NO. or service@astm.Yourcommentsareinvitedeitherforrevisionofthisstandardorforadditionalstandards andshouldbeaddressedtoASTMInternationalHeadquarters. Thisstandardissubjecttorevisionatanytimebytheresponsibletechnicalcommitteeandmustbereviewedeveryfiveyearsand ifnotrevised.% = @~V–V s! /V] 3 100 n % % % % DEGREE OF SATURATION = @Vw / ~V–V s!# 3 100 S % % % % VOLUME OF CYLINDER.100BarrHarborDrive. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the above address or at 610-832-9585 (phone).whichyoumayattend. D 7263 – 09 X3. POROSITY. DEPTH/ELEV.4 gm CU FT DRY UNIT WEIGHT = ~Md /V ! 3 62. 7 . ThisstandardiscopyrightedbyASTMInternational.PA19428-2959. VOID RATIO.Usersofthisstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights. 610-832-9555 (fax). LOCATION BORING NO.WestConshohocken. United States.eitherreapprovedorwithdrawn.AND DEGREE OF SATURATION (VOLUMETRIC METHOD—B) NAME DATE JOB NO.Yourcommentswillreceivecarefulconsiderationatameetingofthe responsibletechnicalcommittee.4 gd VOID RATIO = ~V–V s! /V s e POROSITY. CYLINDER NO. EXAMPLE DATASHEET VOLUMETRIC METHOD—B UNIT WEIGHTS. MAY BE COMPUTEDAS FOLLOWS: M d 5 Mt / ~1 1 0. TARE PLUS WET SOIL TARE PLUS DRY SOIL MASS WATER Mw IN GRAMS TARE DRY SOIL Md WATER CONTENT w % % % % WEIGHT-VOLUME RELATIONS SAMPLE OR SPECIMEN NO.astm.Ifyoufeelthatyourcommentshavenotreceivedafairhearingyoushould make your views known to theASTM Committee on Standards.01w! B SPECIFIC GRAVITY OF WATER IN METRIC SYSTEM = 1 (APPROX) REMARKS COMPUTED BY CHECKED BY ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned inthisstandard. SAMPLE NO.andtherisk of infringement of such rights.org (e-mail). at the address shown below. are entirely their own responsibility.