You should check with your building inspector for local codes. It may be wise to obtain this in writing. We consider most spiral stairs to be secondary or ornamental stairs.
IMPORTANT NOTICE: The selection of Steel Spiral Stair products to comply with your local building codes, safety laws, or any other law, ordinance, regulation, etc., that apply is the entire responsibility of the buyer, building owner, architect and or engineer. We have no responsibility in this matter.