Kevin,

I came up with a joist/sleeper system that I have seen in some barns is Wisconsin. There is less notching, (which will save on labor, and since all the joists will be hidden under the flooring in the crawl space, you wouldn't know that they weren't "joined".)

I dropped the main sleepers to go under the lower sill tie-beams, and the joists then sit on the sleepers and are at the same elevation. I also added extra joist down the driveway mow/bay and an extra sleeper down the middle to help carrier the live load of moving equipment around. You should be able to create pockets in the concrete walls to let the sleepers transfer load.

Good Luck,

Rooster

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