June 12, 2019

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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GMax Test – Brock International

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The values given in parentheses are for information only. Reduce risk of injuries by putting performance safety layers under the field. Hours of use, climate, and maintenance or lack thereof. Test providers can adapt the procedures and guidelines contained herein to tests performed on any turf playing system.

Our standard for a field with Brock is pristine natural grass, because that is the surface that every athlete would rather play on. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. 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.

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ASTM F355 – 16E1

This test simulates impact attenuation of a playing surface. 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.

It is the responsibility of the user of this standard to astk appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Beyond The G-Max Test: Link to Active This link will always route to the current Active version of the standard.

Bringing the allowable GMax thresholds back to within reasonable limits is the current direction for most field designers and owners. But there are three main reasons fields get hard over time when installed directly over stone: A moderate head injury consists of a loss of consciousness, where a major head injury results in a skull fracture!

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. It requires the missile to be dropped in a minimum of 10 locations around the field.

This abstract is a brief summary of the referenced standard. It should not be used, without some modifications, to test the finished products. Work Item s – proposed revisions of this standard. According to the Penn State Center for Turfgrass Science, impact attenuation asmt a playing surface is measured by an accelerometer mounted inside the missiles, that indicates surface hardness and is reported as Gmax.

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Typical playing surfaces are wrestling mats, football fields, soccer fields, playgrounds, and so forth. Smaller bodies need a different surface than the pros! But even considering these factors, a Brock field qstm consistently meet the ranges of natural grass. The original shock pad system that set all industry standards for artificial turf fields. Which is why quality natural turf is the benchmark for quality artificial turf.

The safety of the playing surface only degrades over time. It drops a 10 lb hemispherical impactor from increasing heights to determine Critical Fall Height. Historical Version s – view previous versions of standard. All are considered concussions. Put into perspective, the asym forces allowed on an artificial turf surface are somewhat ludicrous.

This test method is applicable to natural and artificial playing surface systems and to ast, thereof. It is also useful in assessing the playability of a field.

GMax is one benchmark at which to rate each field. The test method, aptly called the free-fall drop test, shall be performed at eight different test point locations for four specific types of surface systems, namely: