Want an easy to do and reasonably affordable shop floor?
Stretch a string line across the area and work the dirt floor smooth, as if you were finishing concrete. Make this surface 1 inch below your desired finished floor surface. Put down a double layer of 6 mil black plastic moisture barrier over the dirt.
Put down a layer of 1/2 inch particle board fitted snug. You can use scrap lumber for the first layer if you got it. Adjust your thickness calculations accordingly. Over that layer put a layer of 1/2 inch particle board and give much attention to tight fitting edges & ends.
Next cut 4 X 4 inch squares from scrap sheet metal. Use 1/2 - 3/4 inch long shingle nails to nail the squares over all the 4 corner junctions of the top panels. Nail the same way 2 X 4 inch metal strips at 2 foot intervals on all the panel edge joints.
This type of floor is easy on the feet and legs. It is also easy to repair if damaged.
Hank Calonkey, IA, entered 2000-01-31