Quantity - Emergency conditions.
Municipal Code of Chicago § 18-28-1105.8.4
in effect18-28-1105.8.4 Quantity - Emergency conditions.
Upon actuation of the refrigerant detector required in Section 18-28-1105.5, the mechanical ventilation system shall exhaust air from the machinery room in the following quantity:
[image omitted; see the official code]
where:
Q = The airflow in cubic feet per minute (m3/s).
G = The design mass of refrigerant in pounds (kg) in the largest system, any part of which is located in the machinery room.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2688868Fetched: 10/24/2026
