ASTM_F_3248_-_17.pdf

Designation:F324817Standard Test Method forDetermining Vertical Deformation and Area Deflection ofArea Elastic,Point Elastic,Combined Elastic and MixedElastic Sport and Dance Surfaces1This standard is issued under the fixed designation F3248;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.INTRODUCTIONThis standard provides the methods to measure the deflective properties of a sports surface.Thesedeflective properties provide estimates on the stability and comfort from a sport surface.Verticaldeformation is a property that provides a quick and cost-effective means of estimating the stability thata sport surface provides during lower extremity loading.Area deflection is a property that provides aquick and cost-effective estimate of the vibration properties of a sports surface.Area deflection testingis limited to area elastic,combination elastic,and mixed elastic flooring systems.It is not applicableto natural turf,synthetic turf,or playground surfaces.1.Scope1.1 This method covers the quantitative measurement andnormalization of deflections generated within a sports surfaceas an indication of the stability and comfort provided by thesystem.1.2 Vertical deformation provides a measure for the verticalmotion generated within the sports surface system directlybelow the point of impact which has been normalized to astandard impact force.1.3 Area deflection provides a measure of the vibrationsgenerated during an impact and their strength at a pre-determined distance from the point of impact.1.4 This method is not applicable to natural turf,syntheticturf or playground safety surfaces.1.5 This method is applicable to indoor and outdoor sur-faces including but not limited to:wood and synthetic courts,walk/jog/run tracks,tennis courts,dance surfaces,aerobics andgeneral fitness surfaces.1.6 The methods described are applicable in both laboratoryand field settings.1.7 Area deflection testing is optional,and only applicableto area-elastic,combined elastic and mixed elastic sportsurfaces.These include wood surfaces,synthetic surfaces on asprung wood subfloor,and point elastic surfaces with aninternal area elastic component.1.8 The values stated in SI units are to be regarded asstandard.Units provided in parenthesis are informational only.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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.10 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:2F2569 Test Method for Evaluating the Force ReductionProperties of Surfaces for Athletic Use2.2 Other Standards:EN 14809 Surfaces for sports areas Determination ofvertical deformationDIN 18032-2 Halls for Gymnastics,Games and Multipur-pose Use,Part 2:Sports Floors Requirements,Testing1This test method is under the jurisdiction of ASTM Committee F08 on SportsEquipment,Playing Surfaces,and Facilities and is the direct responsibility ofSubcommittee F08.52 on Miscellaneous Playing Surfaces.Current edition approved Dec.1,2017.Published January 2018.DOI:10.1520/F3248-17.2For 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.1 MFMA PURTMStandard Performance and Uniformity Rat-ing:Maple Flooring Manufacturers Association,Inc.FIBA Official Basketball Rules 20155 International Basket-ball Federation3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 area deflection,ndownward vertical displacement agiven distance(100 mm or 500 mm)from the center point ofan impacted area expressed as a percent of the displacementproduced at the center of the impacted area.3.1.2 area elastic sport surface,nsports surface of whicha relatively large area around the point of an applied force isdeflected(such as a wood floor).3.1.