03-29-2007, 11:40 AM
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Aggie there are a lot of varibels here that need to be taken into consideration before you start. My experience is over 45 years working as a construction superintendent on dams, nuke plants, bridges and several othe heavy construction projects not only in this country but around the world. The first thing to take into consideration is what will be the final elevation of your finnished grade. You don't want any low spots. Next is what kind of drainage is there in the soil sub grade. You may need to build the whole floor leval up so when it rains you will not be in a mud hole. After your sub grade has been brought up and graded to a satisfactory elevation I would go with sand as a finnished base. Sand can be harrowd down and maintained fairly easy and it is absobant also. Good luck.