What load capacities should you expect from different metal shelf uprights?

Load capacity for metal shelf uprights depends on gauge, height, and design. Light-duty 16-gauge slotted angle uprights typically handle 1,000–2,000 lbs per shelf level when spaced properly. Medium-duty 14-gauge versions often support 3,000–5,000 lbs per level in selective racking. Heavy structural uprights in 12-gauge or thicker steel carry 8,000–15,000 lbs or more per beam pair, common in drive-in or push-back systems. Always check manufacturer beam and upright charts-capacities drop with taller columns due to buckling risk. Seismic bracing or base plates boost ratings in earthquake zones. Even distribution matters; overloading one side cuts overall safety. (metal shelf uprights) rated for uniform loads perform best-point loads need extra support. Professional engineers calculate exact figures for tall or high-capacity setups. Ignoring ratings risks collapse, so stick to posted limits and factor in safety margins.