Minnesota Administrative Rules

4658.4515 VENTILATION REQUIREMENTS; NEW CONSTRUCTION.

Mechanical supply and exhaust ventilation must be provided for all areas according to part 4658.4520. The systems must be designed and balanced to provide the pressure relationships described in part 4658.4520. Areas not covered in part 4658.4520 must be ventilated according to the Minnesota State Building Code. Areas requiring an equal or positive pressure relationship to adjacent areas according to part 4658.4520 must be provided with tempered makeup air. All air-supply and air-exhaust systems must be mechanically operated. Required exhaust ventilation must not be activated by a light switch. All fans serving exhaust systems must be located at the discharge end of the system. The ventilation rates shown in part 4658.4520 are minimum acceptable rates, and do not preclude the use of higher ventilation rates if the rates do not result in undesirable velocities in resident areas.

Statutory Authority:

MS s 144A.04; 144A.08

History:

21 SR 196

Published Electronically:

October 11, 2007