Find the most up-to-date version of ASTM F at Engineering Penn State’s Center for Sports Surface Research. How is Gmax tested? • American Society for Testing and Materials. (ASTM). – Synthetic Turf. • F • F Buy ASTM F TEST METHOD FOR IMPACT ATTENUATION OF PLAYING SURFACE SYSTEMS, OTHER PROTECTIVE SPORT SYSTEMS, AND .
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For use under artificial turf. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
This specification covers a test method and the corresponding performance requirement for the maximum impact attenuation in all types of turf playing systems installed for North American football fields that is intended to establish a method for identifying and reporting areas within an existing playing system where shock-absorbing properties exceed recommended threshold values. This is the softness or hardness under foot during play.
By partnering with leading testing facilities and universities around the world, Brock has been able to push the safety standards for the artificial turf industry forward. All of these areas are regions where an athlete should expect compliant impact attenuation characteristics, but, it does not imply that an injury cannot be incurred if the surface system complies with this specification. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Bringing the allowable GMax thresholds back to within reasonable limits is the current direction for most field designers and owners. Hours of use, climate, and maintenance or lack thereof. Work Item s – proposed revisions of this standard. Typical playing surfaces are wrestling mats, football fields, soccer fields, playgrounds, and so forth.
GMax Test – Brock International
Note 1—This test method may also be used to measure the shock-attenuation properties of materials used as protective padding, such as the padding on trampoline frames, football goal posts, gymnasium wall, shoulder pads, body padding, and so forth.
It drops a 10 lb astn impactor from increasing heights to determine Critical Fall Height. This is our playground product.
The higher the g-max value, the poorer the shock-attenuation performance of the surface. ASTM does not give qstm warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. It comes in different thicknesses to optimize safety for the turf you select. Put into perspective, the impacts forces allowed on an artificial turf surface are somewhat ludicrous. According to the Penn State Center for Turfgrass Science, impact attenuation of a playing surface is measured by an accelerometer mounted inside the missiles, that indicates surface hardness and is reported as Gmax.
PowerBase Pro provides the ideal balance between shock absorption and field stiffness for elite athletes and is the only product engineered for NCAA, Pro and elite level players. Asttm should not be used, without some modifications, to test the finished products. Active view current version of standard. HIC is the internationally recognized test standard for head injuries. But there are three main reasons fields get hard over time when installed directly over stone: This test method is applicable to natural and artificial playing surface systems and to components thereof.
This test simulates impact attenuation of a playing surface. Link to Active This link will always route to the current Active version ast, the standard. Our standard for a field with Brock is pristine natural grass, asym that is the surface that every athlete would rather play on.
Beyond The G-Max Test: The original shock pad system that set all industry standards for artificial turf fields.
Sports Surface Testing Machine
It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. The turf playing g355 typically includes field areas within and outside the inbound lines extending to the sport specific limit lines as defined by the appropriate regulating body or appropriate standard, or both.
The test method, aptly called the free-fall drop test, shall be ast, at eight different test point locations for four specific types of surface systems, namely: Which is why quality natural turf is the benchmark for quality artificial turf.
Measuring impact-attenuation is a fundamental tool of athletic field safety testing. It also includes a protocol for determining test point locations on fields that are lined for multiple sports. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Smaller bodies need a different surface than the pros!
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
The higher the Critical Fall Height, the more protective the surface is for head injuries. GMax is one benchmark at which to rate each field. And for good reason. Test providers can adapt the procedures and guidelines contained herein to tests performed on any turf playing system.
The values given in parentheses are for information only. Historical Version s 3f55 view previous versions of standard. All are considered concussions. These alternate surface materials are not included in the scope of this specification. Link to Active This link will always route to the current Active version of the standard.
This abstract is a brief summary of the referenced standard. The safety of the playing surface only degrades over time.
It requires the missile to be dropped in a minimum f35 10 locations around the field. Brock is not comfortable simply meeting industry expectations for Gmax ratings.