Field Health Systems

Field Health Systems

Lincoln High School

John Smith

Athletic Director

Testing Data Management

Input and track field testing measurements

Testing Guidelines

GMAX Testing

  • • Measures surface hardness
  • • Safe limit: <100
  • • Critical: >100
  • • Take 8+ readings across field

Shear Factor

  • • Measures traction/grip
  • • Minimum safe: >20
  • • Critical: <15
  • • Test in multiple directions

Infill Depth

  • • Measures infill level
  • • Target: ~50mm
  • • ±20% deviation OK
  • • Check high-traffic areas

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