ASTM_D_7015_-_13.pdf

Designation:D701513Standard Practices forObtaining Intact Block(Cubical and Cylindrical)Samples ofSoils1This standard is issued under the fixed designation D7015;the number immediately following the designation indicates the year oforiginal 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.Scope*1.1 These practices outline the procedures for obtainingintact block(cubical and cylindrical)soil samples.1.2 Intact block samples are obtained for laboratory tests todetermine the strength,consolidation,permeability,and othergeotechnical engineering or physical properties of the intactsoil.1.3 Two sampling practices are presented.PracticeAcoverscubical block sampling,while Practice B covers cylindricalblock sampling.1.4 These practices usually involve test pit excavation andare limited to relatively shallow depths.Except in the case oflarge diameter(that is,greater than34m)bored shafts ofcircular cross-section in unsaturated soils,for depths greaterthan about 1 to 112metres or depths below the water table,thecost and difficulties of excavating,cribbing,and dewateringgenerally make block sampling impractical and uneconomical.For these conditions,use of a thin-walled push tube soilsampler(Practice D1587),a piston-type soil sampler(PracticeD6519),or Hollow-Stem Auger(Practice D6151),Dennison,or Pitcher-type soil core samplers,or freezing the soil andcoring may be required.These practices do not addressenvironmental sampling;consult Guides D6169 and D6232 forinformation on sampling for environmental investigations.1.5 Successful sampling of granular materials requires suf-ficient cohesion,cementation,or apparent cohesion(due tomoisture tension(suction)of the soil for it to be isolated in acolumn shape without undergoing excessive deformations.Additionally,care must be exercised in the excavation,pres-ervation and transportation of intact samples(see PracticeD4220,Group D).1.6 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.7 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026 unless superseded by this standard.1.7.1 The procedures used to specify how data are collected/recorded or calculated in this standard are regarded as theindustry standard.In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 consider-ations for the users objectives;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.1.8 These practices offer a set of instructions for performingone or more specific operations.This document cannot replaceeducation or experience and should be used in conjunctionwith professional judgment.Not all aspects of these practicesmay be applicable in all circumstances.This ASTM standard isnot intended to represent or replace the standard of care bywhich the adequacy of a given professional service must bejudged,nor should this document be applied without consid-eration of a projects many unique aspects.The word Stan-dard in the title of this document means only that thedocument has been approved through the ASTM consensusprocess.1.9 This standard does 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 and health practices and determine the applica-bility of regulatory requirements prior to use.For specifichazard statements,see Section 6.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluids1These practices are under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.02 on Sampling andRelated Field Testing for Soil Evaluations.Current edition approved July 1,2013.Published August 2013.Originallyapproved in 2004.Last previous edition approved in 2007 as D7015 07.DOI:10.1520/D7015-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 D1587 Practice for Thin-Walled Tube Sampling of Soils forGeotechnical PurposesD1785 Specification for Poly(Vinyl Chloride)(PVC)PlasticPipe,Schedules 40,80,and 120D2488 Practice for