Field Testing

 

Delivering Safety Metrics for every Brock Artificial Turf Field

The venues for athletic play need to be safe for every athlete. Period. It’s not enough to simply reassure parents that, “Yeah the field is plenty safe.” There has to be data to back up such a claim. To determine the safety and playability of any turf, research facilities and universities around the world have developed standardized tests and equipment. These certified devices test for three primary parts of the body: the head, the body, and when a foot strikes the surface.

Brock has helped push the industry forward and demand higher standards for safety. Every brock field is tested after installation to determine HIC (Head Injury Criterion) and Gmax (unit of measurement for Gravity) scores. The third test Brock conducts on every field is the Vertical Deformation test that measures the stiffness under foot during running, meaning the depression and recovery of a field in millimeters. These three tests are conducted across the entire field and each Brock customer is delivered a thorough report that they can use in proving the safety measures employed in their field design. Brock can provide these tests as a general field assessment, or we can recommend a third party lab that can conduct a certified test.


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HIC TEST

(HEAD IMPACTS)

HIC is the internationally recognized test standard for head injuries. It drops a 10 lb hemispherical impacter from increasing heights to determine Critical Fall Height. It’s the same test used in playgrounds, automotive crashes, wall padding, pole vault, and the WR Reg22 standard for artificial turf. The higher the Critical Fall Height, the more protective the surface is for head injuries.

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GMAX TEST

(BODY IMPACTS)

This test method covers the measurement of certain shock-absorbing characteristics, like during body impacts. It’s applicable to natural and artificial playing surface systems. It does not correlate to head injury. It drops a 20 lb flat missile from 24”. GMax is a good measurement when used in conjunction with HIC above, but as a standalone test is not a total measure of field safety.

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DEFORMATION TEST

(FIRMNESS UNDER FOOT)

This test simulates the heel strike of an adult running athlete in stride. This is the softness or hardness under foot during play. A great natural grass field hits the “sweet spot” of being firm under foot while producing very low gmax and high Critical Fall Height. Which is why quality natural turf is the benchmark for quality artificial turf.

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