In my absence from this site, one of the new things done around the place was a new fuel storage shed. Had a smaller one in the same location, but an early fall snow hit us couple years back, and the leaves were still on a big oak that butted right up to the shed (my bad for building it there). It came down root ball and all, lifting a corner of the shed, pretty much ruining it. I had a diesel and gas tank on metal stands, it knock them over, but they didn't puncture or spill. So I removed the fuels, and knocked the shed down, and built a bigger one with concrete base. (Other was just 4 posts in the ground). Put 4 - 4x6 treated posts in the ground and poured an 8x12' slab around them. Framed the walls, put a loft in just over 6' high to hold the tanks. Finished shed. 300 gal gas, 250gal diesel in loft so they gravity feed thru filters into filler hoses. Shelving below is for cases of oil, grease, trans fluid, etc.