Quick and dirty shed floor: shed assembly part 1 this is the floor i build to put the best barn denver model on top of here is my amazon affiliate link to the shed i put on top. https://amzn.to. 10 x 12 storage shed project plans. jul 11, 2016. 1.5 out of 5 stars 9. app free. available instantly on compatible devices. shelterlogic 12' x 12' corral shelter and livestock shade waterproof and uv treated universal cover for horses, goats, and other livestock (corral panels not included). How to build a skid foundation step 1: plan and skid foundation design. the size of your shed determines the skid dimensions and the floor joist plan. use pressure treated lumber or cedar for the skids. the skids usually run the length of the shed so the narrower frontage is being pulled..