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

Trap seal protection.

Municipal Code of Chicago § 18-29-901.2
in effect
Sign in to generate a plain English summaryAsk Belisarius Agent
18-29-901.2 Trap seal protection. The plumbing system shall be provided with a system of vent piping that will permit the admission or emission of air so that the seal of any fixture trap shall not be subjected to a pneumatic pressure differential of more than 1 inch (25 mm) of water (249 Pa).
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2692426Fetched: 10/24/2026

Starting a business in Illinois? Illinois LLC guide: costs and requirements

18-29-901.2 | Corpus