Concrete driveway thickness??

As with any foundation, a driveway/parking pad should be designed for the application. Obviously parts of the parking pad will have no weight on it and other parts will bear the weight of the RV. To make the whole pad the same thickness is a waste of money. The edges need to be thicker because they will get the weight of the RV as the wheels pass over it or when parked. Where the leveler pads rest is also an area that needs additional support. Concrete should be reinforced with steel mesh and rebar where the load will be concentrated. It makes sense to make the supporting areas a little thicker, just like any building foundation. I also prefer to use fiber-reinforced concrete to help resist cracking, which may happen anyway. Rather than waste concrete by pouring the entire slab the same thickness, just design the slab for the coach that it is to support.