Transcription of IS 2720-29 (1975): Methods of Test for Soils, Part 29 ...
1 Disclosure to Promote the Right To InformationWhereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. ! $ ' + - Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge 0 1 ' 5 Jawaharlal Nehru Step Out From the Old to the New 1 + , 1 + Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live !
2 > 0 B Bhart hari N ti atakam Knowledge is such a treasure which cannot be stolen Invent a New India Using Knowledge IS 2720-29 (1975): Methods of Test for Soils, Part 29: determination of Dry density of Soils In-place by theCore-cutter Method [CED 43: Soil and FoundationEngineering]Gr3IS : 2720 (PartXXIX)- 1975(Reaffirmed2005)IndianStandardMETHOD SOFTESTFORSOILSPART XXIX determination OF DRY density OFSOILSIN PLACEBY THE CORE-CUTTER METHOD( FirstRevision)Sixth Copyright1976 BURE A UOFI N D I A N STANDARD SMANAKBRAVAN, 9 BAHADURSHAH ZAFARMARGNEWDELli110002 March1976 IS : 2720 (PartXXIX ) - 1975 Indian StandardMETHODS OF TEST FOR SOILSPARTXXIXDETERMINATiONOFDRYDENSITYOF SOILSIN-PLACEBYTHECORE-CUTTERMETHOD( FirstRevision)SoilEngineeringSectionalCo mmittee,BDC 23 ChairmanPROFDINESHMOHANR epresentingCentralBuildingResearchInstit ute(CSIR).RoorkeeInpersonalcapacity(P-82 0 NewAlipore,Calcutta700053)Inpersonalcapa city[Inter StateEquipment(P)Ltd,3/1 LoudonStreet.]
3 Calcutta700017] ,PatnaIndianGeotechnicalSociety , , ,BombayMembersSHRI G. R. S. JAIN (AlternatetoProfDineshMohan)PROFALAMSING HDR (Alternate)SHRI K. A. (GEOTECHNICALSECTION)(Alternate)DIRECTOR I ndianInstituteofTechnology,NewDelhiDRSHA SHIK .GULHATI(Alternate)DIRECTOR(CSMRS) ( CS MRS)(Alternate)SHRI A. ;andHazarat& A. (Alternate) . (Alternate)(Continued onpare2 )eCopyright1976 BUREAU OFINDIANSTANDARDST hispublicationisprotectedundertheIndian CopyrightAct( XIVof1957)andreproductioninwholeorinpart byanymeansexceptwithwrittenpermissionoft hepublishershallbedeemedto be aninfringementofcopyrightunderthesaidAct IS : 2720 (PartXXIX ) -197!(Continuedfrompag~1 )PublicWorksDepartment,GovernmentofPunja bRoadsWinS,MinistryofTransport&: (MinistryofRailways)InstitutionofEnlinee rs(India" ,ChandigarhSHIUH. ,BombaySHRIV. K. VASUDBVAN(A/teT1 JQte) ,DirectorGeneral,lSI(Ex-ojJicioMember)Di rector(CivEngllPublicWorksDepartment, (Alurnate)SHRI ,BombaySHRIT.))
4 M .MENON(Alternate) (CSIR),NewDelhiREPRESENTATIVEH industanConstructionCoLtd, ' (Alternat )SURIK .R .SAXENAEoSineeriDJResearehLaboratory,Hyd erabadSECRETARYC entralBoardofIrrigationetPower,NewDelhiD EPlTTYSECRETARY(Alternate). , ,RoorkeeSUPERINTENDINOEN0 INEE RConcreteandSoilResearchLaboratory,Publi c(PuNNINGANDDESIONW orksDepartment,GovernmentofTamilNaduC1 RCU!)EXECUTIVEENGINEEJlINCHAROE(Alternat e) ~mb~rsJOII'n"DIRECTORRESEARCH(FE),RDSODE PlTTYDIRECTORRESEARCH(SoILMECHANICS),RDS O( Alternate)SHRI O. N. SEN (Alternate)SHRI G. ( ),lSISoil TestingProceduresandEquipmentSubcommitte e,DDC 23 : 3 ConveMrPROFALAMSINOHU niveraityofJodbpur,JodhpurM~mbersSHRIN . ,TalwaraTownshipSHRI K. (Alternate)(Cont/nJud0"pap9 )2 IS :2720(PartXXIX)-1975I ndianStandardMETHODS OF TEST FORSOILSPARTXXIXDETERMINATIONOFDRVDENSIT YOFSOILSIN-PLACEavTHECORE-CUTTERMETHOD(F irstRevision) (PartXXIX)( FirstRevision)wasadoptedbytheIndianStand ardsInstitutionon 22 September 1975,afterthedraftfinalized by the Soil Engineering SectionalCommitteehad beenapprovedby the Civil EngineeringDivision With a view toestablishinguniformprocedurefor thedeterminationofdifferentcharacteristi csof soils and also forfacilitatingcomparativestudiesof the results, theIndianStandardsInstitutionhasbroughto ut thisIndianStandardmethodsoftest for soils(IS:2720) which is published [ IS.]
5 2720(PartXXIX)-1975]deals with thedetermina-tionofdry densityofsoil in-place by using in-placedensity of soil isneededfor stability analysis, for thedeterminationof thedegreeofcompactionofcompactedsoil, core-cuttermethodcovered by thispartis suitablefor fine-grained soils free from lessaccuratethanthesand-replacementmetho dandisnotrecommended,unless speed is essentialorunless the soil is in-placedeterminationof densityofsoils are:PartXXVIIID eterminationofdrydensityofsoils in-place by thesandreplacementmethodPartXXXIIID eterminationofthe density in-place by the ring andwaterreplacementmethodPartXXXIVD eterminationofdensityofsoil in-place by firstpublishedin 1966. In this revision, the testhas been madeapplicableto soil 90percentofwhich passes the 4'75-mmIS Sieve. The dimensionsandrequirementsof thecore-cutterhave the steelrammerrequiredfor the IS : 2720 (PartXXIX)- theformulationofthisstandarddueweightage has been given tointernationalco-ordinationamongthe standardsandpracticesprevailingin different co unt ries inadditiontorelatingit to thepracticesin the fieldin thefollowingpublications:BS1377: 1974 Methodsoftestingsoils for , , 'Forthepurposeofdecidingwhethera particularrequirementofthisstandard iscompliedwith, the final value, obser vedorcalculated,expressingthe result of a testoranalysis,shall beroundedoff inaccordancewithIS :2-1960*.
6 Thenumberofsignificantplacesretainedin theroundedoffvalueshouldbe the same asthatofthespecified value in Thisstandard(PartXXIX)coversthemethodfor thedeterminationofthe in-placedensityoffine-grainednaturalorco mpactedsoils free fromaggregates using thisstandard,a soilshall betermedasfine-grainedsoil ifnotlessthan90percentofit passesa4'75-mmIS CYlindricalCore-Cutter-ofseamlesssteeltu be,130 mm long( seeNote I)and10 eminternaldiameter,with a wallthicknessof 3 mm,bevelled at oneend,ofthe typeillustratedin bekeptproperly greased -Length0/CUller-Iftheaveragedensityovera smallerdepthisrequiredthen theappropriatelengthofCUllershouldbe -Wheresitua ti o nspermit,forqualitycontrolpurposessmalle rsizecuttershave also been ~Steel Dolley - 2'5 em highand10 eminternaldiameterwith a wallthicknessof7'5mmwith a liptoenableittobe fittedontopofthecore-cutter(seeFig. 1 )."Rulesforroundingoffnumericalvalues(re visedi ,4 IS :2720 ( PartXXIX).)
7 1975 STEEL FOOTmt/JSOLIDSTEEL STAFF1ol>..11---140 --lRAMMER25m> <MILO0I0::e,e,cf00r""LO< ,HARDENEDCUTTINGEDGECUTTERNOTE1 - These designs have beenfoundsatisfactory,butalternativedesi gns maybeemployedprovidedthatthe -Essentialdimensionsareunderlined.(Toler anceon all essential dimen-sionsshallbe O'25 mm ). 1 CORE-CUTTERApPARATUSFOR SOILDENSITYDETERMINATION5 IS :2720(PartXXIX) 1" ~nd75mm height withaconcentricallyscrewed25mmdiameterso lid mildsteel staff. Theoveralllengthoftherammerincludingthef ootas well asthe ( footandstafftogether)shouldweighapproxim ately9 kg (seeFig. 1 ). Aconvenientsize isonehavingabladeapproximately20 em long and3cm - A steelstripabout30 emlong,2'~em wideand3to 5 mm thick, with one bevellededgewill :tiacSamplesfrom forDetmoiutloaofWaterContent-Inaccordanc ewithIS: 2720(PartII) Theinternalvolume (V,)ofthecore-cutterincubiccentimetressh allbecalculatedfrom itsdimensionswhichshallbemeasuredto thenearest0 Thecuttershall hewei&bedto thenearestgram(W,).
8 A small area, approximately30 cmsquareofthesoillayerto be testedshallbeexposed steel dollythallbeplacedontopofthecutterand thelattershall herammeddownverticallyintothe soil layeruntil onlyabout15 mmofthe dollyprotrudesabovethesurface,care beingtakennottorockthecutter(seeNote).Th ecuttershallthenbedugoutof careheiD,takentoallowsomesoil toprojectfrom the lower fiat to the :rhecuttin, heweighedtothenearestgram(Ws). soil coreshallberemovedfromthecutterandarepre sentativesample shallbeplacedin anair-tightcontaineranditswatercontent(w )determinedas in IS: 2720(Pan11) soils:PartnDeterminationofwatercontent(s econdrevision).6 IS:1720(PartXXIX ) 1975 NOTIl-Itisnecessarytomakea Dumber ofrepeatdeterminations(atleastthree)and toaverageresults. since the dry density ofthesoilvariesap~ablyfrom,ointto not alter the average si& ;thatis, the weightofthewet soil percubiccentimetreshallbecalculatedfromt hefollowingformula:wherert=Ws-WeII,gemVe Ws=weightofsoilandcore-cutterini,We=weig htofcore-cuttering,andVe= ,thatis.
9 Theweightofthedry soil percubiccenti-metreshallbecalculatedfrom thefollowingformula:_100rtgJIr4-lOO+w'em wherert=bulkdensity(se ).andw=watercontentofthesoil(percent) Theresultsofthe-testshall berecordedina bereported:a)Drydensityofthe soiltosecondplaceofdecimaling/em',andb)W atercontentofthe soil (percent)to IS :2720(PartXXIX ) 1975 APPENDIXA( )DETERMINATIONOFDRYDENSITYOFSOILIN-PLACE (CORE-CUTrERMETHOD)A-I. The test results shallbetabulatedas follows:PROJECT:TESTEDBY:LocATION: Weight ofcore-cutter+ wet soil(Ws),in g3. Weightofcore-cutter(W,),in g4.~eightof wet soil (Ws-W,).mg5. Volumeofcore-cutter(V,),in cm36. Bulk density (Ws-W,). ,,mg em" Weightofcontainerwithlid( Wi ),in g9. Weightofcontainerwith lidandwet soil (W,),in g10. Weightofcontainerwith lidanddry soil(W3),in (w),inpercentw=W,-W3X100W3-Wi12. Dry density (Y4=100Y.), ingfcm3lOO+w8 IS : 2720 ( PartXXIX)- 1975( COl/til/lied from page2 )CentralWaterCommission, NewDelhiGeologists 'SyndicatePrivateLtd,CalcuttaIndianInsti tuteofTechnology, NewDelhiCentralBuildingResearchInstitute ( CSIR),RoorkceM embersR ep resentingDR R.
10 :-;OARIC entralRoa dRese a rchInstitute( C S I ewD elhiSHRIT. adsWing,Min isuyofTransport&Shipp ingSHRI A. ' Ol(Alternate)DR ksDepartment, (Alternate) ,PatnaDEPUTYDIRECTORRESEARCHR ailwayBoard(MinistryofRailways)( S,)ILMECHANICS)-1 ,ROSaAss1 STA NTDIRECTORRESEARCH( S O I LMECH AN( C S )-1,Rosa( A lte rnat e)DIRECTOR( C SMRS)DEPUTYDIRECTOR( CSM RS)(Alternate)SHRIH . K .GUHASHRIN . N .BHATTACHARAYA( A lte rn ate) ULHATISHRIG. R. (AMARSINGH(Alternate) AI NUnitedTechnicalConsultantsPrivateLtd,Ne wDelhiBuilding&RoadsResearchLaboratory,P unjabInpersonalcapacity(F-24 GreenBark,NewDelhiIlOOJ6 )MAJK. M. (Engineer-in-Chref'sBranch ,ArmyHeadquartersSHRIP. PUTHISIGAMANI(Alternate)SHRIH. ( Ind ia)PrivateLtd,NewDelhiPROFT. (Alternate)DR .DE(Alternate)SHRIa .P . U PPAL(Alternate)DRV. V. BUREAU OF INDIANSTANDARDSH eadquarters:Manak Bhavan, 9 BahadurShahZafarMarg,NEWDELHI 110002 Telephones:23230131,23233375,23239402 Fax: 91+01123239399,23239382E-Mail: info@ bsite: hlt :Plot ,SiteIV, SahibabadIndustrialArea,SAHIBABAD201010 RegionslOffices:Central: Manak Bhavan, 9 BahadurShahZafarMarg,NEWDELHI 110002"Eastern: 1/14 CITS chemeVII M, , Kankurgachi, KOLKATA 700054 Northern: SCO335-336, Sector34-A, CHANDIGARH160022 Southern: , IV Cross Road, CHENNAI600113twestern: Manakalaya, E9, MIDC, BehindMarol Telephone Exchange,Andheri(East), MUMBAI400093 BranchOffices:'Pushpak', NurmohamedShaikh Marg, Khanpur,AHMEDABAD380001 PeenyaIndustrialArea,1"Stage,Bangalore-T umkurRoad, BANGALOREC ommercial-cum-OfficeComplex, Opp.)))
