Thanks for all the good info! I will be leaving the pad a compacted lime stone sand base. With concrete going for $125 a yard my budget will not allow that. The limestone sand, we have around here compacts down very hard even under wet conditions. I use a sand floor in my barns and I have found them to work very well. I am planing on putting gutters on the building to channel water away. I hope to start on leveling the pad in the next few weeks if the weather holds. But with that being said I am excepting some very cold temps, so the ground may freeze up and stay that way for awhile.