How to calculate floor loading. A typical residential building code might require floors to withstand 40 pounds per square foot (or PSF). Office buildings might have a rating of 100 PSF. This is roughly the amount of weight you’d have with a group of standing people. For materials and equipment in industrial buildings, you can calculate how much weight is being applied per square foot. Typically, ground floors with poured concrete can sustain much larger loads than upper floors – consider this when looking for your industrial space. This is also important to keep in mind if you’re thinking of adding stacked racks for storage or a mezzanine office space.
For a typical Pallet (40x48 inches) of materials, here’s the max weight that corresponds to various floor loads: