[GWN7]

While the pallet racks will support the weight you have mentioned what you need to consider is the base they will be standing on. For a proper base you would need to drill belled piles to support the weigh and the deck weight load. A engineer who is familiar with your soil conditions would have to design the foundation plans which would include depth, size, number and the type of concrete they would be made of. Anything else and you would be risking your life to be on or under that structure.