Minnesota Administrative Rules

1346.0401 SECTION 401 GENERAL.

IMC Section 401.4 is amended to read as follows:

401.4 Opening location. Outside air exhaust and intake openings, in buildings other than dwellings and Group R-3 occupancies, shall be located a minimum of 10 feet (3048 mm) from lot lines or buildings on the same lot. Where openings front on a street or public way, the distance shall be measured to the centerline of the street or public way.

401.4.1 Intake openings. Mechanical outside air intake openings shall be located a minimum of 10 feet (3048 mm) from any hazardous or noxious contaminant, such as chimneys, plumbing vents, streets, alleys, parking lots, and loading docks, except as otherwise specified in this code. Where a source of contaminant is located within 10 feet (3048 mm) of an intake opening, the intake opening shall be located a minimum of 3 feet (914 mm) below the contaminant source, unless the intake opening is a combustion air intake of a direct-vent appliance.

401.4.2 Exhaust openings. Outside exhaust openings, including bathroom exhaust, toilet exhaust, domestic kitchen range exhaust, and domestic clothes dryer exhaust, shall be located at least 3 feet (914 mm) from doors, operable windows, and nonmechanical intake openings. Exhaust air shall not be directed onto public walkways.

401.4.3 Flood hazard. For structures located in flood hazard areas, outdoor exhaust openings shall be at or above the design flood elevation.

401.4.4 Venting system terminations. Venting system terminations shall comply with IMC Section 804 and IFGC Section 503.8.

Statutory Authority:

MS s 16B.59; 16B.61; 16B.64; 326B.101; 326B.106; 326B.13

History:

29 SR 299; L 2007 c 140 art 4 s 61; art 13 s 4; 34 SR 537

Published Electronically:

October 23, 2009