I will be pouring a 3x3 concrete pad, five" thick. The pad is thick simply because Component of It's going to be a little above ground. The pad is going to be a landing to get a ramp. The ramp will "land" or relaxation about eight" from the edge http://rafaelisbkp.widblog.com/23997625/the-5-second-trick-for-continuous-high-chair-upper