Scenario challenges
What makes a construction site different
Unpaved ground defeats smooth tires
Industrial smooth or cushion tires built for warehouse floors lose traction on mud, gravel and loose fill.
Ramps and grades stall yard trucks
A yard-specified truck without 4WD and high gradeability stalls on access ramps a construction site requires daily.
Uneven ground needs axle compliance
Rigid axles lose ground contact on uneven terrain; an oscillating castor axle keeps all tires loaded.
Selection logic
How to spec a construction-site truck
| Decision factor | What changes on site | How this solution is specified |
|---|---|---|
| Traction | Loose fill and mud need an aggressive tread pattern, not a smooth industrial tire. | RT40 aggressive-lug solid tires. |
| Drive mode | Full-time 4WD costs fuel efficiency on firmer ground within the same site. | RT40 4WD/2WD switchable drive. |
| Gradeability | Access ramps and graded roads exceed what a yard truck is rated to climb. | RT40 rated 30% gradeability. |
| Ground contact | Rigid axles lift a wheel off uneven ground, reducing available traction. | RT40 oscillating castor axle keeps all tires loaded. |
Recommended model
One rough-terrain platform for the whole site
RT40 — 4.0 t Rough-Terrain Forklift (4WD)
Oscillating castor axle, 30% gradeability and aggressive-lug solid tires for unpaved ground.
- Rated capacity 4,000 kg @ 600 mm
- Turbocharged diesel, 45 kW, 4WD
- CE
Canopy cab option
For open-air conditions, the RT40 is available with a canopy cab to protect the operator from sun and rain without changing the base machine.
Spec a construction-site truck with us
Send your ground conditions, grade and load profile — engineering responds within 12 hours on average.
Other working scenarios
Cold storage, warehousing & logistics, ports & heavy industry, farms & ranches — the same scenario-first matching across five environments.
Related reading
Selection guides and comparisons from the Granvolt engineering team, including rough-terrain and power-type selection.