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Form a Business

Construction.

Municipal Code of Chicago § 14X-5-505.12.3
in effect
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14X-5-505.12.3 Construction. The structure must be capable of supporting a live load of 100 pounds per square foot (4788 Pa) and must be constructed of steel or other approved noncombustible materials. Walkways and railings located over or supported by combustible roofs in buildings of Type III and IV construction may be constructed of wood not less than nominal 2 inches (51 mm) thick. Stair treads and landings must be so constructed as to prevent accumulation of snow or ice, but the maximum dimension of any opening, through such treads, landings, or floors may not exceed 1-1/4 inches (32 mm).
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2676017Fetched: 10/24/2026

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14X-5-505.12.3 | Corpus