You misunderstood. My sheet lifter/tilt-table has wonderful casters on it and rolls easily all over the router bay.
The problem is simply getting sheets of goods from the truck's delivery pallet onto the sheet lifter. Regardless of whether or not I could place the pallet inside the shop (no room for that, anyway), I'd still have to lift the sheets from the pallet onto the tilt-table's cleats. Once on there, it's a 'lark' to roll it to the storage rack, and deposit a sheet on the rack.
This is a logistics problem, not an equipment problem. The router bay just is NOT large-enough to permit pushing-in a 4x8 pallet of goods, even if I built a larger door. I have two 4'x8' CNC bed routers in there (along with barely-sufficient clearance around both to do work), plus two bandsaws, a grinder table, two storage racks for different raw materials, and lots of shelves for equipment, parts, and etc. There's just no room in there for a pallet, lying flat. All my sheet storage racks hold the material vertically to minimize the floor area they use. The tilt table will deliver material either horizontally or vertically. It's designed to pick up goods from the vertical storage racks, and place them horizontally on the routers.
Lloyd