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STC Performance Guidelines & Testing Methods for Synthetic
Turf Sports Surfaces
Welcome!
Moderator:Craig HonkompSenior Engineer Sportworks Field DesignCincinnati, Ohio
Topics of Discussion
• Overview of the synthetic turf industry
• Testing Methods for Synthetic Turf Sports Fields
• Relevance of the STC’s Guidelines for Synthetic Turf Performance
Panelist:John BaizePresident & OwnerAct GlobalAustin, Texas
Panelist:Alastair CoxDeputy CEO & Director of International CorporateLabosport InternationalDerbyshire, United Kingdom
Panelist:Matt AsburyManaging DirectorLabosport InternationalDalton, Georgia
The STC’s Four Pillars of Strategic Priority
Promoting growth of
synthetic turf market
Providing neutral, science‐based industry guidelines
Earning ongoing support and
participation of our members
Growing the acceptance and demand for synthetic turf
Player Needs: The Main Driver for Quality Synthetic Turf
In 2012, the U.S. Consumer Product Safety Commission’s National Electronic Injury Surveillance System (NEISS) tracked sports injury data, and found that:• 1,353,750 children under the age of 19 were seen in the
ER for sports‐related injuries.• The most common injuries are: Sprains: 33% Fractures: 18% Bruises and Abrasions: 16% Internal Organ Injuries including Concussions: 12%
STC Guidelines for Synthetic Turf Performance
• STC response to market questions on how to: Objectively select the right surface Improve quality and performance Maintain and when to replace the surface
• Encourages synthetic turf systems to: Play like good quality natural turf Minimize the risk of injury Provide a consistent and durable sports field
system
Voluntary Guidelines
• ASTM International Standards G‐max, product identification, and quality ASTM International was known previously as the
American Society of Testing & Materials
• FIFA Quality Concept Durability testing, with a wide‐range of natural grass
benchmarks for sports performance and quality FIFA is the international governing body for soccer
• Scope of work: Infilled synthetic turf systems
STC Guidelines for Synthetic Turf Performance
• Provides an easy‐to‐implement format for bidding purposes
IdentificationGuidelinesTestMethod(s) Property CommunityField StadiumField
ASTMD3218 FiberMicrons +/‐ 10%ofSpecification +/‐ 10%ofSpecification
ASTMD5823 PileHeight +/‐ 1/8”ofSpecification +/‐ 1/8”ofSpecification
ASTMD5793 StitchGauge SameasSpecification SameasSpecification
ASTMD5848orFIFA/ISO8543
PileWeight+/‐ 10%and nomorethanminus2oz./sq.yd.ofSpecification
+/‐ 10%and nomorethanminus2oz./sq.yd.ofSpecification
ASTMD5848orFIFA/ISO8543
PrimaryBacking +/‐ 10%ofSpecification +/‐ 10%ofSpecification
ASTMD5848orFIFA/ISO8543
SecondaryBacking+/‐ 10%and nomorethanminus2oz./sq.yd.ofSpecification
+/‐ 10%and nomorethanminus2oz./sq.yd.ofSpecification
ASTMD5848orFIFA/ISO8543
TotalWeight +/‐ 10%ofSpecification +/‐ 10%ofSpecification
FIFA/EN1969 InfillDepth +/‐ 15%ofSpecification +/‐ 15%ofSpecification
FIFA/EN13041 InfillBulkDensity +/‐ 15%ofSpecification +/‐ 15%ofSpecification
ASTMF2765‐09 LeadContent Below100ppm Below100ppm
PerformanceGuidelinesASTMF1936 ImpactAttenuation(g‐max) Below165 Below165
FIFA04andFIFA09 ShockAbsorption 55%to70% 60%to70%
FIFA05andFIFA09 VerticalDeformation(footstability)4mmto9mm
4mmto8mm
FIFA06andFIFA09 RotationalResistance(traction) 25nto50n 30nto45n
FIFA07 LinearFriction—Deceleration 3.0gto6.0g 3.0gto5.5g
FIFA07 LinearFriction—Slide 120to220 130to210
FIFA08 SkinAbrasion(dry) <30% <30%
FIFA08 Skin/SurfaceFriction(dry) 0.35to0.75 0.35to0.75
FIFA01andFIFA09 VerticalBallRebound(soccer)60cmto100cm
60cmto85cm
FIFA02 AngledBallBehavior(soccer) 45%to70% 45%to60%
FIFA03 BallRoll(soccer‐specific) 4mto10m 4mto8m
TestingFrequencyGuidelines
ClientRequirements LaboratoryTestingPre‐purchaseandasQCMeasure
Pre‐purchaseandasQCMeasure
ClientRequirements FieldTesting AfterInstallation AfterInstallation
ClientRequirementsFieldTesting(follow‐up)
EveryFourYears EveryYear
Videos on Testing Methods
1. Lisport2. Tuft Bind3. Pile Weight ASTM D58484. G‐max5. Advanced Artificial Athlete (AAA)6. Rotational Resistance7. Field Planarity8. Vertical Ball Rebound9. Ball Roll
Field Test Locations
STC Guidelines for Synthetic Turf Performance: Identification Guidance
• Identification guidance to make sure that you get the surface you specified
• Maintaining proper infill depth is essential for field safety, performance, and durability
IdentificationGuidelinesTestMethod(s) Property CommunityField StadiumField
ASTMD1907 FiberDenier +/‐ 10%ofSpecification +/‐ 10%ofSpecification
ASTMD3218 FiberMicrons +/‐ 10%ofSpecification +/‐ 10%ofSpecification
ASTMD5823 PileHeight +/‐ 1/8”ofSpecification +/‐ 1/8”ofSpecification
ASTMD5793 StitchGauge SameasSpecification SameasSpecification
ASTMD5848orFIFA/ISO8543 PileWeight+/‐ 10%and nomorethanminus2oz./sq.yd.ofSpecification
+/‐ 10%and nomorethanminus2oz./sq.yd.ofSpecification
ASTMD5848orFIFA/ISO8543 PrimaryBacking +/‐ 10%ofSpecification +/‐ 10%ofSpecification
ASTMD5848orFIFA/ISO8543 SecondaryBacking+/‐ 10%and nomorethanminus2oz./sq.yd.ofSpecification
+/‐ 10%and nomorethanminus2oz./sq.yd.ofSpecification
ASTMD5848orFIFA/ISO8543 TotalWeight +/‐ 10%ofSpecification +/‐ 10%ofSpecification
FIFA/EN1969 InfillDepth +/‐ 15%ofSpecification +/‐ 15%ofSpecification
FIFA/EN13041 InfillBulkDensity +/‐ 15%ofSpecification +/‐ 15%ofSpecification
ASTMF2765‐09 LeadContent Below100ppm Below100ppm
STC Guidelines for Synthetic Turf Performance: Player Performance
• Provides performance guidance to address the players’ needs and expectations
PerformanceGuidelines
ASTMF1936 ImpactAttenuation(g‐max) Below165 Below165
FIFA04andFIFA09 ShockAbsorption 55%to70% 60%to70%
FIFA05andFIFA09 VerticalDeformation(footstability) 4mmto9mm 4mmto8mm
FIFA06andFIFA09 RotationalResistance(traction) 25nto50n 30nto45n
FIFA07 LinearFriction—Deceleration 3.0gto6.0g 3.0gto5.5g
FIFA07 LinearFriction—Slide 120to220 130to210
FIFA08 SkinAbrasion(dry) <30% <30%
FIFA08 Skin/SurfaceFriction(dry) 0.35to0.75 0.35to0.75
FIFA01andFIFA09 VerticalBallRebound(soccer) 60cmto100cm 60cmto85cm
FIFA02 AngledBallBehavior(soccer) 45%to70% 45%to60%
FIFA03 BallRoll(soccer‐specific) 4mto10m 4mto8m
STC Guidelines for Synthetic Turf Performance: Quality
• Quality guidance on recommended industry tests for durability and quality
QualityGuidelinesTestMethod(s) Property CommunityField StadiumField
ASTMD1335orISO4919 TuftBind(withoutinfill) >6.8lbs.or30N >6.8lbs.or30N
FIFA09/EN13672SimulatedWear/AbrasionResistance
ShockAbsorption,VerticalDeformation,BallReboundandRotationalResistance—passafter20,200Lisport cycles
ShockAbsorption,VerticalDeformation,BallReboundandRotationalResistance—passafter5,200Lisportcycles
FIFA/ENISO20105‐A02ArtificialWeathering(3,000hoursUVA)TurfColorChange
>GrayScale3 >GrayScale3
FIFA/EN13864ArtificialWeathering(3,000hoursUVA)PileYarnTensileStrength
Reductionofnomorethan50% Reductionofnomorethan50%
FIFA/ENISO20105‐A02ArtificialWeathering(3,000hoursUVA)InfillColorChange
>GrayScale3 >GrayScale3
FIFA/EN13036 SurfaceRegularity<10mmdifferenceover3mstraightedge
<10mmdifferenceover3mstraightedge
Surveyor’slevel Slope <1% <1%
ASTMF1551orFIFA/EN12616 WaterPermeability(afterinstall) >10inchesperhour >10inchesperhour
A Two Stage Assessment
Step One• Laboratory TestsTo assist architects and field owners to ensure that they select products of proven quality and performance
Step Two• Field TestsOnsite quality assurance tests to check manufacturing, construction and installation. Ongoing testing suggests to assess changes in performance
Summary
• There are numerous quality assurance benefits to utilizing the STC Guidelines for Synthetic Turf Performance and proper lab and field testing
• The most important driver is the need of the player• International research indicates that when field‐tested turf systems that fit within FIFA test methods, they have Similar fatigue levels to natural grass
o Measured by heart rate and blood lactate levelso 41% of injuries connected to fatigue/over use
Similar injury rates to natural grass
STC’s Free Technical Guidelines
• Synthetic Turf Performance*• Essential Elements for Synthetic Turf Systems*• Maintenance of Infilled Synthetic Turf*• Removal, Recovery, Reuse & Recycling• Attracting Funding and Local Support• Buying Synthetic Grass for Landscape Use
* Translated into Spanish
How to Join the STC
• Apply online at www.syntheticturfcouncil.org• Special dues categories are available for: Municipal officials, athletic directors, teachers,
and students Landscape architects, engineers, and synthetic
turf consultants Base contractors (no field construction) Regional landscape and recreation installers
Thank you for attending!Feel free to contact us:
www.syntheticturfcouncil.orgoffice@syntheticturfcouncil.org400 Galleria Parkway, Suite 1500
Atlanta, GA 30339(678) 385‐6720
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