I want to build a plywood rack that will sit on four 4" wheels and tuck next to the side wall of my shop. The rack would have a base of 16 inches by 8 feet. It will be constructed with two rails at the base that will be 8 feet long dimensional yellow pine. I'm thinking about using 2x6s. Would this be sufficient? The rails would be bridged by 1" dowels located every 4" with
1" wide by 1" Sch 40 PVC sleeves over them to act as rollers (20 pieces of dowel connecting the two rails).My rough calculations show 490 lb load applied to each rail, evenly distributed across the entire length (assume 13 sheets of 3/4" plywood at 75 lb each).
Bob