Forklift Load-Center Capacity Derate

Net forklift capacity at the actual load center from the data-plate rating, a pass / fail against the load, and the remaining margin. The capacity plate is the legal rating.

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Formula and source

net_capacity = rated_cap x rated_lc / actual_lc (data-plate method); pass = load <= net_capacity; margin_pct = (net_capacity - load) / net_capacity x 100.

ASME B56.1 (Powered Industrial Trucks) and the truck data plate by name; the data-plate load-center method.

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