They were designed for a low axle load of just 10.7 tonnes.
If a lower axle load is needed, one engine can be left off.
They are also popular because the greater number of axles results in a lower axle load to the track.
Because it had a high axle load, the G 8.1 could however only be used on main lines.
The axle load is 13 t for which the structures are to be designed.
The line has been upgraded several times to increase the axle load.
The axle load had to be no more than 17,5 tons.
This would have required the axle load to be increased.
The first two figures gave the axle load in Mp.
The average axle load followed, separated by a full stop.