Contact the Floor Jack rep at the corporation that manufactures. They should have a list of vendors and send you proper installation standards. Best of Luck. Also we would recommend a structural engin ... read more
Mark, the answer depends on the topo ie the slope and terrain. Consult a local structual engineer..
proper drainage away, footers, rock, filter cloth, french drainect ect ( water is a hydrolic tool)
T ... read more