Average resistances for various surfaces
Average Resistances for Various Surfaces (N/tonne)
Surface resistance
| Surface Type | Starting | Rolling |
|---|---|---|
| Smooth concrete | 300 | 150 |
| Rough concrete | 500 | 250 |
| Macadam (good) | 400 | 200 |
| Smooth brick or tile | 360 | 180 |
| Wood | 400 | 200 |
| Hard gravel | 700 | 350 |
| Steel rails (straight line) | 100 | 50 |