haul road having a rolling resistance of 60 lb per ton: Engine: 239 fwhp Capacity: Struck, 14.7 cu yd Heaped, 2:1, 18.3 cu yd Net Weight (empty) = 36,860 lb Payload = 44,000 lb Maximum Speed 6.5 mph (from Figure 1, or Fig. 10-9 Text) 6 9% 20 60 ≈ = + =