IMC section 404.1 is amended to read as follows:
Enclosed parking garages.
Mechanical ventilation systems for enclosed parking garages shall operate
automatically upon detection of certain gas concentrations. Enclosed parking
garages shall be equipped with a carbon monoxide (CO) detector and a nitrogen
dioxide (NO2) detector. The mechanical ventilation
system shall activate upon detection of a CO level of 25 parts per million
(ppm) or greater, a NO2 level of 3 ppm or greater, or both. Such detectors
shall be listed in accordance with UL 2075 and installed in accordance with
their listing and manufacturers instructions.
IMC section 404.2 is amended to read as follows:
Occupied spaces accessory to
public garages. Connecting offices, waiting rooms, ticket booths,
elevator lobbies, 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 IMC section 403.3.
IMC section 404 is amended by adding a subsection 404.3 to
read as follows:
exhaust. The mechanical ventilation system shall be capable of producing
a minimum exhaust rate of 0.75 cfm per square foot (0.0038 m3/s·m2) of
IMC Section 404.4 is amended by adding a section to read as
heated commercial parking garages. Commercial parking garages shall
comply with the Minnesota Commercial Energy Code, chapter 1323.