Minnesota Administrative Rules

1346.0404 SECTION 404 GARAGES.

Subpart 1.

Section 404.1.

IMC Section 404.1 is amended to read as follows:

404.1 Enclosed parking garages. Mechanical ventilation systems for enclosed parking garages shall provide a minimum exhaust rate of 0.75 cfm per square foot (0.228m³ per minute per square meter) of floor area. Mechanical ventilation systems are not required to operate continuously where the system is arranged to operate automatically upon detection of a concentration of carbon monoxide of 25 parts per million (ppm) by approved automatic detection devices.

Subp. 2.

Section 404.2.

IMC Section 404.2 is amended to read as follows:

404.2 Motor vehicle repair garages. Mechanical ventilation systems for motor vehicle repair garages shall provide a minimum exhaust rate of 0.75 cfm per square foot (0.228m³ per minute per square meter) of floor area.

Subp. 3.

Section 404.3.

IMC Section 404.3 is amended to read as follows:

404.3 Occupied spaces accessory to public garages. Connecting offices, waiting rooms, ticket booths, and similar uses that are accessory to a public garage shall be maintained at a positive pressure and shall be provided with ventilation in accordance with the Ventilation Rate Procedure, Section 6.2 of ASHRAE 62.1-2004, or the Indoor Air Quality Procedure, Section 6.3 of ASHRAE 62.1-2004.

Subp. 4.

Section 404.4.

IMC Section 404.4 is amended by adding a section to read as follows:

404.4 Prohibition of heated commercial parking garages. Commercial parking garages shall comply with the Minnesota Commercial Energy Code, chapter 1323.

Statutory Authority:

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

History:

15 SR 71; 29 SR 299; L 2007 c 140 art 4 s 61; art 13 s 4; 34 SR 537

Published Electronically:

October 23, 2009