What does ASTM F1292-18e1 evaluate?
Impact attenuation of playground surfacing materials
What is the primary injury ASTM F1292 aims to prevent?
Head injuries from falls
What two metrics are used to assess impact attenuation?
G-max and Head Injury Criterion (HIC)
What is the maximum allowable g-max value?
200 g
What is the maximum allowable HIC value?
1000
What is critical height?
The maximum fall height from which a surface can attenuate impact within ASTM limits
What is the minimum test temperature in ASTM F1292?
25°F (−4°C)
What is the maximum test temperature in ASTM F1292?
120°F (49°C)
What is the ambient test temperature in ASTM F1292?
72°F (22°C)
How many temperatures must be tested for compliance?
Three: 25°F
What is the drop height increment used during testing?
Typically 1-foot increments
What is the test missile used in ASTM F1292?
An instrumented hemispherical headform
What is the mass of the test missile?
10.1 ± 0.1 lb (4.6 ± 0.05 kg)
What is the diameter of the test missile?
8.0 ± 0.1 inches (203 ± 2.5 mm)
What does HIC measure?
The likelihood of head injury from impact
What does g-max measure?
Peak acceleration during impact
What is the minimum number of drops per height?
Two drops
What is the required drop spacing?
At least 18 inches apart
What is the required surface area for testing?
Minimum 36 inches × 36 inches
What is the required thickness of test samples?
As installed or specified by manufacturer
What is the purpose of conditioning surfacing samples?
To simulate real-world temperature effects
What is the purpose of lab testing?
To verify surfacing meets impact attenuation thresholds
What is the purpose of field testing?
To confirm installed surfacing performs as expected
What standard governs field testing?
ASTM F3313