Most industrial shelves are made of steel, but due to the high-risk nature of industrial warehousing, it is better to consult with a licensed manufacturer than to attempt to build industrial shelves. Uline.com sells industrial shelving made of high-gauge welded steel built to support weights up to 2,750 pounds.
Many industrial shelves have welded floor plates for bolting the shelves. A 14-gauge steel product is the most common type used in Uline shelving. Wire decking also works better than wooden bases to increase fire sprinkler efficiency and permanently affix the shelving base.
Manufacturers list safety and liability instructions with new shelving units. Although the Occupational Safety and Health Administration does not explicitly list load limits for shelving, consider floor-bolting any above-ground shelf holding more than 250 pounds.