ASTM_D_7383_-_19.pdf

Designation:D738319Standard Test Methods forAxial Rapid Load(Compressive Force Pulse)Testing ofDeep Foundations1This standard is issued under the fixed designation D7383;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.Scope1.1 These test methods,commonly referred to as RapidLoad Testing,cover procedures for testing an individualvertical or inclined deep foundation element to determine thedisplacement response to an axial compressive force pulseapplied at its top.These non-static foundation test methodsapply to all deep foundation units,referred to herein as“piles,”that function in a manner similar to driven or cast-in-placepiles,regardless of their method of installation.1.2 Two alternative procedures are provided:1.2.1 ProcedureAuses a combustion gas pressure apparatusto produce the required axial compressive force pulse.1.2.2 Procedure B uses a cushioned drop mass apparatus toproduce the required axial compressive force pulse.1.3 This standard provides minimum requirements for test-ing deep foundations under an axial compressive force pulse.Plans,specifications,provisions(or combinations thereof)prepared by a qualified engineer,may provide additionalrequirements and procedures as needed to satisfy the objectivesof a particular deep foundation test program.The engineer inresponsible charge of the foundation design,referred to hereinas the“Engineer,”shall approve any deviations,deletions,oradditions to the requirements of this standard.1.4 The proper conduct and evaluation of the test requiresspecial knowledge and experience.A qualified engineer shoulddirectly supervise the acquisition of field data and the interpre-tation of the test results so as to predict the actual performanceand adequacy of deep foundations used in the constructedfoundation.A qualified engineer shall approve the apparatusused for applying the force pulse,rigging and hoistingequipment,support frames,templates,and test procedures.1.5 The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.The word“shall”indicates amandatory provision,and the word“should”indicates arecommended or advisory provision.Imperative sentencesindicate mandatory provisions.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 D6026.1.7.1 The procedures used to specify how data are collected/recorded or calculated in the 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;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 analysismethods for engineering data1.8 The method used to specify how data are collected,calculated or recorded in this standard is not directly related tothe accuracy to which the data can be applied in the design orother uses,or both.How one uses the results obtained usingthis standard is beyond its scope.1.9 ASTM International takes no position respecting thevalidity of any patent rights asserted in connection with anyitem mentioned in this standard.Users of this standard areexpressly advised that determination of the validity of any suchpatent rights,and the risk of infringement of such rights,areentirely their own responsibility.1.10 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.Section 7 provides a partial list of specific hazards andprecautions.1These test methods are under the jurisdiction ofASTM Committee D18 on Soiland Rock and is the direct responsibility of Subcommittee D18.11 on DeepFoundations.Current edition approved March 1,2019.Published March 2019.Originallyapproved in 2008 as D738308.Last previous edition approved in 2010 asD738310.DOI:10.1520/D7383-19.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