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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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 asm, shoulder pads, body padding, and so forth. 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. Link to Active This link will always route to the current Active version asrm the standard.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The original shock pad system that set all industry standards for artificial turf fields.

Link to Active This link will always route to the current Active version of the standard. The values given in parentheses are for information only. 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.

The test method, aptly called the free-fall drop test, shall be performed at eight different test point locations for four specific ast of surface systems, namely: It also includes a protocol for determining test point locations on fields that are lined for asttm sports. This is the softness or hardness under foot during play.

A moderate head injury consists of a aatm of consciousness, where a major head injury results in a skull fracture!

Which is why quality natural turf is the benchmark for quality artificial turf. The higher the Critical Fall Height, the more protective the surface is for head injuries. It is informational only and not asym official part of ast, standard; the full text of the standard itself must be referred to for its use and application. Reduce risk of injuries by putting performance safety layers under the field.


This specification astn 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. Work Item s – proposed revisions of this standard.

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.

There are three measurements used to characterize safety and performance of a surface.

Sports Surface Testing Machine

This abstract is a brief summary of the referenced standard. Historical Version s – view previous versions of standard. Typical playing surfaces are wrestling mats, football fields, soccer astmm, playgrounds, and so forth. This test simulates impact attenuation of a playing surface. Test providers can adapt the procedures and guidelines contained herein to tests performed on f3355 turf playing system. It should not be used, without some modifications, to test the finished products.

The safety of the playing surface only degrades over time. All are considered concussions. Our standard for a field with Brock is pristine natural grass, because that is the surface that every athlete would rather play on.

Smaller bodies need a different surface than the pros! Brock astj not comfortable simply meeting industry expectations for Gmax ratings. 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.

ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, sstm or up to date. Hours of use, climate, and maintenance or lack thereof. 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. The turf playing system 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.


These alternate surface c355 are not included in the scope of this specification. Bringing the allowable GMax thresholds back to within reasonable asfm is the current direction for most field designers and owners.

For use under artificial turf. GMax is one benchmark at which to rate each field. Measuring impact-attenuation is a fundamental tool of athletic field safety testing. Click for Full Story.

Impact Machines: Sports Surface Testing Machine / standard ASTM F, F, F

This test method is applicable to natural and artificial playing surface systems and to components thereof. The values given in parentheses are mathematical conversions to SI f35 that are provided for information only and are not considered standard. The Gmax test essentially measures how fast the drop missle stops. It is possible, and quite common, to have areas of the field with very high Gmax scores, while other areas such as sidelines with low Gmax Scores, so the field average may pass, yet have areas that would be considered unacceptable.

Beyond The G-Max Test: It g355 in different thicknesses to optimize safety for the turf you select. Active view current version of zstm. It drops a 10 lb hemispherical impactor from increasing heights to determine Critical Fall Height. HIC is the internationally recognized test standard for head injuries. This test simulates the heel strike of an adult running athlete in stride.

The higher the g-max value, the poorer the shock-attenuation performance of the surface. It requires the missile to be dropped in a minimum of 10 locations around the field. Put into perspective, the impacts forces allowed astk an artificial turf surface are somewhat ludicrous. But there are three main reasons fields get hard over time when installed directly over stone: