For AI agents: read the machine-readable documentation index at /llms.txt or the single-file full reference at /llms-full.txt.
Form a Business

General.

Municipal Code of Chicago § 18-28-311.1
in effect
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18-28-311.1 General. Buildings shall be provided with smoke and heat vents or mechanical smoke removal systems where required by the Chicago Building Code. (Amend Coun. J. 9-14-21, p. 35949, Art. III, § 9)
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2686825Fetched: 10/24/2026

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