ARSD 44:73:12:33. Water supply systems

A facility shall ensure its water supply system supplies water to the fixtures and equipment on the facility's upper floors at a minimum pressure of fifteen pounds per square inch, or 1055.9 kilograms per square meter, during maximum demand periods. Each water service main, branch main, riser, and branch to a group of fixtures must be valved. Stop valves must be provided at each fixture. Hot, cold, and chilled water piping and waste piping on which condensation may occur must be insulated. Insulation of cold and chilled water lines must include an exterior vapor barrier.