18-28-403.11 Multi-purpose rooms.

   If a room is used for two or more purposes, each of which is subject to different ventilating requirements, and it is possible to determine the space which will be used for each purpose, then each such space may be considered as a separate room and ventilated in accordance with the table of ventilating requirements applicable to that room. If it is not possible to determine the space which will be used for each purpose, the most restrictive, applicable ventilating requirements shall apply to the entire room.

18-28-403.12 Partitions.

   If a partition stops at a distance of 2 feet or more below ceiling level, the partition shall not be considered to form an independent room; the space on both sides of the partition shall be considered to form one room. A grille with an opening of not less than 75 percent free area may be placed in the 2 feet space. Door height shall not be considered to be part of the partition.

18-28-403.13 Public garages.

   If a mechanical ventilating system is used in a public garage, the system shall not be required to operate continuously if the system is equipped with an approved detection device that operates automatically upon detection of a concentration of carbon monoxide of 50 parts per million (ppm). The minimum density of carbon monoxide detectors shall be one detector for every 5,000 square feet of garage floor area. If the general exhaust of a building is discharged into a mechanically-exhausted public garage, the garage exhaust system shall exhaust at least 100 percent of the ordinance required air.

18-28-403.14 Compliance.

   The applicant for any permit ventilation schedule in a form substantially similar to Table 18-28-403.14 shall be submitted with permit plans to demonstrate compliance with the Ventilation Article of this chapter.

Table 18-28-403.14

 

Ventilation
Room Description			Ordinance Requirements				Actual Provided				Remarks/ Room Function
			Natural Light & Ventil. (SF)		Mechanical Ventil. (CFM)		Natural Light & Ventil. (SF)		Mechanical Ventil. (CFM)
Room No.	Room Name	Floor Area (Sf)	Glass Area	Vent Area	Supply Area	Exhaust Air from Room	Glass Area	Vent Area	Supply Air	Exhaust Air from Room
–	–	–	–	–	–	–	–	–	–	–	–

 

18-28-403.15 Generator rooms.

   A room containing a generator shall meet the air flow and combustion air requirements in the Chicago Electrical Code.

(Amend Coun. J. 9-14-21, p. 35949, Art. IV, § 6)

18-28-404 Deliberately omitted.