1、Designation: F1292 17a An American National StandardStandard Specification forImpact Attenuation of Surfacing Materials Within the UseZone of Playground Equipment1This standard is issued under the fixed designation F1292; the number immediately following the designation indicates the year oforiginal
2、 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.INTRODUCTIONSurveys by the United States Consumer Product Safety Commission (CP
3、SC)2and others haveshown that falls from playground equipment onto the underlying surface are a significant cause ofinjuries to children. Severe head injuries are the most frequently implicated cause of death inplayground equipment-related falls. Use of appropriate impact-attenuating surfacing mater
4、ials in theuse zone of playground equipment can reduce the risk of fall-related injury. In particular, it is believedthat the risk of life-threatening head injuries is reduced when appropriate surfacing materials areinstalled.This specification specifies impact attenuation performance requirements f
5、or playground surfacesand surfacing materials and provides a means of determining impact attenuation performance using atest method that simulates the impact of a childs head with the surface. The test method quantifiesimpact in terms of g-max and Head Injury Criterion (HIC) scores. G-max is the mea
6、sure of themaximum acceleration (shock) produced by an impact. The Head Injury Criterion or HIC score is anempirical measure of impact severity based on published research describing the relationship betweenthe magnitude and duration of impact accelerations and the risk of head trauma. The standard
7、includesprocedures allowing surfacing materials to be performance-rated before installation and for installedsurfacing materials to be tested for conformance with the specification.The purpose of this specification is to reduce the frequency and severity of fall-related head injuriesto children by e
8、stablishing a uniform and reliable means of comparing and specifying the impactattenuation of playground surfaces. Its use will give designers, manufacturers, installers, prospectivepurchasers, owners, and operators of playgrounds a means of objectively assessing the performanceof surfacing material
9、s under and around playground equipment and hence of evaluating the associatedinjury risk.1. Scope1.1 This specification establishes minimum performancerequirements for the impact attenuation of playground surfac-ing materials installed within the use zone of playgroundequipment.1.2 This specificati
10、on is specific to surfacing used in con-junction with playground equipment, such as that described inSpecifications F1148, F1487, F1918, F1951, and F2075.1.3 This specification establishes an impact attenuationperformance criterion for playground surfacing materials; ex-pressed as a critical fall he
11、ight.1.4 This specification establishes procedures for determin-ing the critical fall height of playground surfacing materialsunder laboratory conditions. The laboratory test is mandatoryfor surfaces to conform to the requirements of this specifica-tion.1.5 The laboratory test required by this speci
12、fication ad-dresses the performance of dry surfacing materials.1.6 The critical fall height of a playground surfacing mate-rial determined under laboratory conditions does not accountfor important factors that have the potential to influence theactual performance of installed surfacing materials. Fa
13、ctorsthat are known to affect surfacing material performance includebut are not limited to aging, moisture, maintenance, exposureto temperature extremes (for example, freezing), exposure to1This specification is under the jurisdiction of ASTM Committee F08 on SportsEquipment, Playing Surfaces, and F
14、acilities and is the direct responsibility ofSubcommittee F08.63 on Playground Surfacing Systems.Current edition approved Oct. 1, 2017. Published January 2018. Originallyapproved in 1991. Last previous edition approved in 2017 as F1292 17. DOI:10.1520/F1292-17A.2U.S. CPSC Special Study. Injuries and
15、 Deaths Associated with ChildrensPlayground Equipment, April 2001. US Consumer Product Safety Commission,Washington DC.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with interna
16、tionally 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.1ultraviolet light, contamination with other materi
17、als,compaction, loss of thickness, shrinkage, submersion in water,and so forth.1.7 This specification also establishes a procedure for test-ing installed playground surfaces in order to determine whetheran installed playground surface meets the specified perfor-mance criterion.1.8 The results of a f
18、ield test determine conformance ofinstalled playground surfacing materials with the criterion ofthis specification and are specific to the ambient conditionsunder which the test was performed.1.9 The impact attenuation specification and test methodsestablished in this specification are specific to t
19、he risk of headinjury. There is only limited evidence that conformance withthe requirements of this specification reduces the risk of otherkinds of serious injury (for example, long bone fractures).NOTE 1The relative risk of fatality and of different degrees of headinjury may be estimated using the
20、information in Appendix X1, whichshows the relationships between the Head Injury Criterion (HIC) scores ofan impact and the probability of head injury.1.10 This specification relates only to the impact attenuationproperties of playground surfacing materials and does notaddress other factors that con
21、tribute to fall-related injuries.While it is believed that conformance with the requirements ofthis specification will reduce the risk of serious injury anddeath from falls, adherence to this specification will notprevent all injuries and deaths.1.11 The values stated in inch-pound units are to be r
22、e-garded as standard. The values given in parentheses aremathematical conversions to SI units that are provided forinformation only and are not considered standard.1.12 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of th
23、e user of this standard to establish appro-priate safety, health, and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.13 This international standard was developed in accor-dance with internationally recognized principles on standard-ization establish
24、ed 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:3E691 Practice for Conducting an Interlaboratory Study toDetermine t
25、he Precision of a Test MethodF355 Test Method for ImpactAttenuation of Playing SurfaceSystems, Other Protective Sport Systems, and MaterialsUsed for Athletics, Recreation and PlayF429 Test Method for Shock-Attenuation Characteristics ofProtective Headgear for Football (Withdrawn 2017)4F1148 Consumer
26、 Safety Performance Specification forHome Playground EquipmentF1487 Consumer Safety Performance Specification for Play-ground Equipment for Public UseF1918 Safety Performance Specification for Soft ContainedPlay EquipmentF1951 Specification for Determination of Accessibility ofSurface Systems Under
27、and Around Playground Equip-mentF2075 Specification for Engineered Wood Fiber for Use as aPlayground Safety Surface Under andAround PlaygroundEquipment2.2 SAE Standard:SAE J211 Recommended Practice for Instrumentation forImpact Tests52.3 Federal Documents:U.S. Consumer Product Safety Commission, Pub
28、lication325, Handbook for Public Playground SafetyU.S. Consumer Product Safety Commission, Special Study:Injuries and Deaths Associated with Childrens Play-ground Equipment. April 20023. Terminology3.1 Definitions of Terms Related to Playground Installa-tions:3.1.1 critical fall height (CFH)a measur
29、e of the impactattenuation performance of a playground surface or surfacingmaterials; defined as the highest theoretical drop height fromwhich a surface meets the impact attenuation performancecriterion specified by this specification. The critical fall heightapproximates the maximum fall height fro
30、m which a life-threatening head injury would not be expected to occur.3.1.2 designated play surfaceany elevated surface forstanding, walking, sitting, or climbing, or a flat surface largerthan 2.0 in. (51 mm) wide by 2.0 in. (51 mm) long having lessthan 30 angle from horizontal.3.1.3 fall heightthe
31、vertical distance between a designatedplay surface and the playground surface beneath it.3.1.3.1 DiscussionFall heights for specific types of playstructure are defined in Specifications F1148, F1487, andF1918.3.1.4 playground equipmentany fixed physical structureinstalled in a designated play area t
32、hat is accessible to childrenfor activities such as climbing, swinging, sliding, rocking,spinning, crawling, creeping, or combinations thereof.3.1.5 playground surfacea manufactured or natural mate-rial used to cover the ground below playground equipment,including foundations, substrates, and any co
33、mpliant surfacingmaterials intended to attenuate impact.3.1.6 play structurea free-standing structure with one ormore components and their supporting members.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of A
34、STMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4The last approved version of this historical standard is referenced onwww.astm.org.5Available from Society of Automotive Engineers (SAE), 400 CommonwealthDr., Warrendale, PA 15096-0001.F1292 17a23.1.7 p
35、ublic use playground equipmenta play structureanchored to the ground or not intended to be moved, for use inplay areas of schools, parks, child-care facilities, institutions,multiple-family dwellings, private resorts and recreationdevelopments, restaurants, and other areas of public use.3.1.8 surfac
36、ing materialsmaterials used to cover the sur-face of the playground use zone.3.1.8.1 loose-fill surfacea compliant top layer of small,independently, movable components; for example, wood fiber,bark mulch, wood chips, shredded foam, shredded rubber,sand, gravel, and so forth.3.1.8.2 aggregate surface
37、a loose fill surface in which thecompliant top layer is made of particulate materials (forexample, sand, gravel, crushed marble, slag, cinders, calcinedmaterials).3.1.8.3 unitary surfacea compliant top layer of one ormore material components bound together to form a continu-ous surface; for example,
38、 urethane and rubber composites,moulded foam, moulded rubber mats.3.1.9 use zonethe area beneath and immediately adjacentto a play structure or playground equipment that is designatedfor unrestricted circulation around the equipment and on whosesurface it is predicted that a user would land when fal
39、ling fromor exiting the equipment.3.1.10 specifierperson or entity responsible for specifyingthe performance requirements of a playground surface. (Forexample an architect, or the prospective purchaser, owner, oroperator of a playground.)3.2 Definitions of Terms Related to Impact Testing:3.2.1 accel
40、erationthe rate of change of velocity with time,expressed in units of m s2(ft s2).3.2.2 drop heightheight from which the missile is droppedduring an impact test, measured as the vertical distancebetween the lowest point of the elevated missile and surfaceunder test.3.2.3 gcommon notation for acceler
41、ations expressed inunits of standard gravity, where 1 g = 1 standard gravity.3.2.4 g-maxthe maximum acceleration of a missile duringan impact, expressed in g units.3.2.5 head injury criterion (HIC)a specific integral of theacceleration-time history of an impact, used to determinerelative risk of hea
42、d injury. See Appendix X1.3.2.6 HIC intervalthe time interval within theacceleration-time history of an impact over which the HICintegral is evaluated.3.2.7 impactcontact caused by a moving object (forexample, an impact test missile) striking another object (forexample, a surface) and during which o
43、ne or both bodies aresubject to high accelerations.3.2.8 impact attenuationproperty of a playground surfacethat, through localized deformation or displacement, absorbsthe energy of an impact in a way that reduces the magnitudesof peak impact force and peak acceleration.3.2.9 impact testa procedure i
44、n which the impact attenu-ation of a playground surface or surfacing materials is deter-mined by measuring the acceleration of a missile dropped ontothe surface.3.2.9.1 free-fall impact testan impact test in which thetrajectory of the missile is not restrained by rails, wires, ormechanisms or struct
45、ures of any type.3.2.9.2 guided impact testan impact test in which thetrajectory of the missile is restrained by rails, wires, or othermechanism or structure.3.2.9.3 impact test resultsone or more measured or calcu-lated values from one or more impact tests used to define theimpact attenuation of a
46、playground surface or surfacing mate-rials.3.2.10 impact test sitepoint on the surface of an installedplayground surface that is selected as the target of an impacttest.3.2.11 impact velocitythe velocity (V0) of a falling body(for example, a missile) at the instant of impact.3.2.12 missilea rigid ob
47、ject of specified mass having ahemispherical surface of specified radius; used to impart animpact to a surface (see Fig. 1).3.2.13 missile reference planethe plane of the flat circularface of the hemispherical missile.3.2.14 performance criterionlimiting values of one ormore impact test results used
48、 to specify minimum impactattenuation performance.3.2.15 reference drop heighta specification of the theoreti-cal drop height of an impact test.3.2.16 reference MEP pada modular elastomer program-mer pad with consistent and known impact attenuation prop-erties that is used to verify proper functioni
49、ng of the impact testequipment.3.2.17 reference temperaturea specification of the tem-perature conditioning of a surfacing materials on which animpact test is performed.3.2.18 sample test pointpoint on the surface of a sampleselected as the target of an impact test.3.2.19 standard gravitythe nominal value of the accelera-tion due to gravity at sea level having an international standardvalue of exactly 9.806 65 m s2(approximately 32.174 ft s2).3.2.19.1 DiscussionAccelerations may be expressed inunits of standard gravity.3.2.20 theoretical
