ASTM_D_7700_-_22.pdf

Designation:D770022Standard Guide forSelecting Test Methods for Geomembrane Seams1This standard is issued under the fixed designation D7700;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 This guide is intended for use as a summary of testmethods necessary to evaluate geomembrane seams.It isintended to guide geomembrane users toward the appropriateevaluation techniques to assess geomembrane seam quality.1.2 Geomembrane seams covered by this guide are:high-density polyethylene(HDPE),linear low-density polyethylene(LLDPE),very low-density polyethylene(VLDPE),flexiblepolypropylene(fPP),polyvinyl chloride(PVC),ethylene pro-pylene diene terpolymer(EPDM),prefabricated bituminousgeomembranes(PBGM),ethylene interpolymer alloy(EIA),and reinforced geomembranes1.3 Although a significant effort has been made to gather alltypes of geomembranes and related evaluation techniqueswhich were on the market at the date of completion of thisdocument,some available materials and technologies mayhave been omitted.The information presented in this documentshall thus be considered to be non-exhaustive.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 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.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D4437/D4437M Practice for Nondestructive Testing(NDT)for Determining the Integrity of Seams Used in JoiningFlexible Polymeric Sheet GeomembranesD4439 Terminology for GeosyntheticsD5641/D5641M Practice for Geomembrane Seam Evalua-tion by Vacuum ChamberD5820 Practice for Pressurized Air Channel Evaluation ofDual-Seamed GeomembranesD6214/D6214M Test Method for Determining the Integrityof Field Seams Used in Joining Geomembranes byChemical Fusion MethodsD6365 Practice for Nondestructive Testing of GeomembraneSeams Using the Spark TestD6392 Test Method for Determining the Integrity of Nonre-inforced Geomembrane Seams Produced Using Thermo-Fusion MethodsD6747 Guide for Selection of Techniques for Electrical LeakLocation of Leaks in GeomembranesD7002 Practice for Electrical Leak Location on ExposedGeomembranes Using the Water Puddle MethodD7006 Practice for Ultrasonic Testing of GeomembranesD7007 Practices for Electrical Methods for Locating Leaksin Geomembranes Covered with Water or Earthen Mate-rialsD7056 Test Method for Determining the Tensile ShearStrength of Prefabricated Bituminous GeomembraneSeamsD7177/D7177M Specification forAir Channel Evaluation ofPolyvinyl Chloride(PVC)Dual Track Seamed Geomem-branesD7272 Test Method for Determining the Integrity of SeamsUsed in Joining Geomembranes by PremanufacturedTaped Methods1This guide is under the jurisdiction ofASTM Committee D35 on Geosyntheticsand is the direct responsibility of Subcommittee D35.10 on Geomembranes.Current edition approved July 1,2022.Published July 2022.Originally approvedin 2012.Last previous edition approved in 2015 as D7700 15.DOI:10.1520/D7700-22.2For 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.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 Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1D7408 Specification for Non-Reinforced PVC(PolyvinylChloride)Geomembrane SeamsD7703 Practice for Electrical Leak Location on ExposedGeomembranes Using the Water Lance MethodD7747/D7747M Test Method for Determining Integrity ofSeams Produced Using Thermo-Fusion Methods for Re-inforced Geomembranes by the Strip Tensile MethodD7749 Test Method for Determining Integrity of SeamsProduced Using Thermo-Fusion Methods for ReinforcedGeomembranes by the Grab MethodD7953 Practice for Electrical Leak Location on ExposedGeomembranes Using the Arc Testing MethodD7982 Practice f