Homeowner looking for advice on how to handle transitioning a wheelchair boardwalk to a driveway. The boardwalk will be meeting at a right angle and there is a mild slope to the driveway. I am following the plans on http://www.wheelchairramp.org/rampma...al/ramp33b.htm My first thought is to use concrete, but I have not worked with concrete since helping my dad in High School, so I would need advice on how to do that. Complicating matters is the huge maple tree root system running through that part of my yard.