Designation:F2117−10(Reapproved2017)AnAmericanNationalStandardStandardTestMethodforVerticalReboundCharacteristicsofSportsSurface/BallSystems;AcousticalMeasurement1ThisstandardisissuedunderthefixeddesignationF2117;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthequantitativemeasurementandnormalizationoftheverticalreboundproducedduringimpactsbetweenathleticballsandathleticsurfaces.1.2Measurementsmaybeconductedonnonathleticsur-facestotesttheperformancepropertiesoftheball.1.3Measurementsmaybeconductedusingnonathleticballstotesttheperformancepropertiesofthesurface.1.4Themethodsdescribedareapplicableinbothlaboratoryandfieldsettings.1.5Thevaluesstatedinmetricunitsaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesareforreferenceonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.7Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1DIN(DeutschesInstitutfurNormung):218032PartII,1991Section5.82.2BritishStandards:37044,1990,Section2.12.3EN(EuropeanCommitteeforStandardization):4EN12235Surfacesforsportsareas-Determinationofverticalballbehaviour3.Terminology3.1Definitions:3.1.1areaelasticsurface,n—surfaceswheretheenergyatimpactisdispersedthroughoutanareasignificantlylargerthantheimpactpoint(forexample,sprungwoodenbasketballfloors,pouredurethanefloorsoversprungsubfloor).Areaelasticsu...
