Can you put a Suncast shed on the ground?
At minimum, suncast recommends a 4” slab with reinforcement bar. Secure the shed to the concrete slab using 3/8” masonry anchors with 1” flat washers. Do not exceed 3/8” anchors. Masonry anchors and washers are available at most local hardware retailers. Use a hammer drill with a masonry bit to create holes in the plastic shed base where the bolts will be installed. Place the anchor bolts into the holes and turn them until the frame is firm. The shed should remain in place with no wobble or movement.