Overturning is a definite risk when operating a truck or forklift on the factory floor. This often occurs when maneuvering with the load elevated or at too high a speed. Other causes of overturning are:
- Sudden braking
- Wheels striking an obstruction
- Use of forward tilt with an elevated load
- Driving down a ramp with the load preceding the vehicle
- Striking overhead obstruction when reversing
- Load shifting
- Wheels sinking into unsuitable floor or ground
The maximum safe load is shown as the rated capacity defined by a weight and distance. With the exception of rough terrain trucks, manufacturer’s specifications are usually based on operations of firm, level floors. The existence of gullies, potholes and debris on the floor should not be tolerated.
Load displacement occurs because recognized methods of load restraint are not used. The full height of any load should be supported by a load rest. Careful use of backward tilt will prevent the load from falling forward. Bonded stacking and load ties of paper, cardboard, thin timber battens will help to stabilize a load. Shrink or stretch wrapping or cardboard inserts can stabilize loose loads.
Failure of the truck can be prevented by regular checks being made and this will also ensure that the truck remains safe to operate.