Join Date: May 2009
Location: UK and Katowice, Poland, plus All Europe
My Motorhome: Niesmann+Bischoff Arto 69GL (2003)
Thanked 498 Times in 441 Posts
We had to reprofile our driveway as the angle between the flat and the slope up to the road was too sharp and would have caused grounding.
We got over this by splitting the angle into two by extending the sloping bit onto the flat with a shallower slope and angle, which then transitioned with a shallow angle onto the original slope. The two transitions have the same angle this halving the original angle.
To work out the angles required I drew out the profile of the overhang on graph paper from measuring the distance from the centre of the back axle to the lowest point at the rear of the MH and the clearance at that point. From this one can measure of what angle the overhang will tolerate without grounding. Then add a little for clearance.
Of course you do need sufficient longitudinal space to achieve this, but we had 40m from the pavement level and a drop of about 1-1.5m
As said above, you may have to do similar for the camber of the road.
Hope this is clear enough to help.