Average head injury criterion (HIC) and g-max values for 6 inches of shredded rubber at ambient temperature by box size and drop height
| Drop height (feet) | HIC | g-max | ||||
|---|---|---|---|---|---|---|
| 18 × 18 | 18 × 36 | % Difference | 18 × 18 | 18 × 36 | % Difference | |
| 1 | 8.7 | 9.4 | 0.1 | 15.7 | 15.4 | −1.9 |
| 2 | 31.6 | 30.2 | −4.4 | 26.6 | 25.4 | −4.5 |
| 3 | 71.6 | 53.4 | −25.4 | 39.3 | 32.6 | −17.0 |
| 4 | 118.6 | 88.8 | −25.1 | 49.9 | 41.4 | −17.0 |
| 5 | 182.0 | 145.1 | −20.3 | 61.4 | 53.0 | −13.7 |
| 6 | 241.6 | 227.8 | −5.7 | 70.9 | 66.4 | −6.3 |
| 7 | 325.7 | 288.5 | −11.4 | 82.3 | 73.6 | −10.6 |
| 8 | 394.7 | 382.7 | −3.0 | 90.5 | 85.1 | −6.0 |
| 9 | 548.6 | 426.2 | −22.3 | 108.3 | 89.6 | −17.3 |
| 10 | 674.5 | 585.1 | −13.3 | 120.7 | 106.8 | −11.5 |
| 11 | 820.6 | 711.8 | −13.3 | 134.1 | 119.8 | −10.7 |
| 12 | 1117.0 | 917.1 | −17.9 | 158.8 | 139.1 | −12.4 |
| Mean difference | −13.5 | −10.7 | ||||