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Chicago Overview
Municipal Code of Chicago
MUNICIPAL CODE OF CHICAGO
TITLE 1 GENERAL PROVISIONS
TITLE 2 CITY GOVERNMENT AND ADMINISTRATION
TITLE 3 REVENUE AND FINANCE
TITLE 4 BUSINESSES, OCCUPATIONS AND CONSUMER PROTECTION
TITLE 5 HOUSING AND ECONOMIC DEVELOPMENT
TITLE 6 HUMAN RIGHTS*
TITLE 7 HEALTH AND SAFETY
TITLE 8 OFFENSES AFFECTING PUBLIC PEACE, MORALS AND WELFARE
TITLE 9 VEHICLES, TRAFFIC AND RAIL TRANSPORTATION
TITLE 10 STREETS, PUBLIC WAYS, PARKS, AIRPORTS AND HARBORS
TITLE 11 UTILITIES AND ENVIRONMENTAL PROTECTION
TITLE 12 RESERVED
TITLE 13 BUILDINGS AND CONSTRUCTION
TITLE 14 RESERVED*
TITLE 14A ADMINISTRATIVE PROVISIONS OF THE CHICAGO CONSTRUCTION CODES*
TITLE 14B BUILDING CODE*
TITLE 14C CONVEYANCE DEVICE CODE*
TITLE 14E ELECTRICAL CODE*
TITLE 14F FIRE PREVENTION CODE*
TITLE 14G FUEL GAS CODE*
TITLE 14M MECHANICAL CODE*
TITLE 14N 2022 ENERGY TRANSFORMATION CODE*
TITLE 14P PLUMBING CODE*
TITLE 14R BUILDING REHABILITATION CODE*
TITLE 14X MINIMUM REQUIREMENTS FOR EXISTING BUILDINGS*
TITLE 15 FIRE PREVENTION
TITLE 16 LAND USE
TITLE 17 CHICAGO ZONING ORDINANCE
TITLE 18 BUILDING INFRASTRUCTURE
CHAPTER 18-11 RESERVED*
CHAPTER 18-13 RESERVED*
CHAPTER 18-14 BUILDING ENERGY USE BENCHMARKING
CHAPTER 18-27 RESERVED*
CHAPTER 18-28 MECHANICAL SYSTEMS*
Article I. Administration (18-28-101 et seq.)
Article II. Definitions (18-28-201 et seq.)
Article III. General Regulations (18-28-301 et seq.)
Article IV. Ventilation (18-28-401 et seq.)
18-28-401 General.
18-28-401.1 Scope.
18-28-401.2 Ventilation required.
18-28-401.3 When required.
18-28-401.4 Method of producing ventilation.
18-28-401.5 Reserved.
18-28-401.5.1 Reserved.
18-28-401.5.1.1 Reserved.
18-28-401.5.1.2 Reserved.
18-28-401.5.1.3 Reserved.
18-28-401.5.1.4 Reserved.
18-28-401.5.1.5 Relief openings.
18-28-401.5.1.6 Air quantities.
18-28-401.5.1.7 Damper.
18-28-401.5.2 Opening location.
18-28-401.5.3 Points of exhaust discharge.
18-28-401.6 Outdoor air opening and protection.
18-28-401.7 Additional ventilation.
18-28-402 Natural Ventilation.
18-28-402.1 Natural ventilation.
18-28-403 Mechanical Ventilation.
18-28-403.1 Source of air supply.
18-28-403.1.1 Air reduction to actual load.
18-28-403.1.2 Demand ventilation.
18-28-403.1.3 Systems with water economizers.
18-28-403.2 Structural requirements of a mechanical system.
18-28-403.3 Ventilation requirements.
18-28-403.3.1.
18-28-403.3.2 Refrigerated rooms.
18-28-403.3.3 Dangerous or noxious contaminants.
18-28-403.3.4 Total air supply.
18-28-403.3.5 Air filter requirements.
18-28-403.3.6 Pedestrian passage way.
18-28-403.3.7 Reserved.
18-28-403.3.7.1 Reserved.
18-28-403.3.7.2 Reserved.
18-28-403.3.8 Outside air requirements.
18-28-403.4 Deliberately omitted.
18-28-403.5 Deliberately omitted.
18-28-403.6 Deliberately omitted.
18-28-403.7 Deliberately omitted.
18-28-403.8 Deliberately omitted.
18-28-403.9 Exhaust through direct openings or ducts.
18-28-403.10 Garages.
18-28-403.11 Multi-purpose rooms.
18-28-403.12 Partitions.
18-28-403.13 Public garages.
18-28-403.14 Compliance.
18-28-403.15 Generator rooms.
18-28-404 Deliberately omitted.
18-28-405 Deliberately omitted.
18-28-406 Ventilation of Uninhabited Spaces.
18-28-406.1 General.
Article V. Exhaust Systems (18-28-501 et seq.)
Article VI. Duct Systems (18-28-601 et seq.)
Article VII. Combustion Air (18-28-701 et seq.)
Article VIII. Chimneys and Vents (18-28-801 et seq.)
Article IX. Specific Appliances, Fireplaces and Solid Fuel-Burning Equipment (18-28-901 et seq.)
Article X. Boilers, Water Heaters and Pressure Vessels (18-28-1001 et seq.)
Article XI. Refrigeration (18-28-1101 et seq.)
Article XII. Hydronic Piping (18-28-1200 et seq.)
Article XIII. Fuel Oil Piping and Storage (18-28-1301 et seq.)
Article XIV. Fuel-Gas Piping (18-28-1401 et seq.)
Article XV. Solar Thermal Systems (18-28-1501 et seq.)
CHAPTER 18-29 PLUMBING*
CHAPTER 18-30 RESERVED*
CHAPTER 18-31 RESERVED*
CHAPTER 18-32 RESERVED*
CHAPTER 18-36 REFERENCE STANDARDS*
APPENDIX TO THE MUNICIPAL CODE OF CHICAGO (RESERVED)*
TABLES
Chicago Zoning Ordinance and Land Use Ordinance
CHICAGO ZONING ORDINANCE AND LAND USE ORDINANCE
TITLE 16 LAND USE
TITLE 17 CHICAGO ZONING ORDINANCE
18-28-312.1 Load calculations.
   Heating and cooling system design loads for the purpose of sizing systems shall be determined in accordance with the procedures described in ASHRAE/ACCA Standard 183. Alternatively, design loads shall be determined by an approved equivalent computation procedure using the design parameters specified in Chapter 3 [CE] of the Chicago Energy Conservation Code.
(Amend Coun. J. 9-14-21, p. 35949, Art. III, § 10)
Article IV. Ventilation (18-28-401 et seq.)
18-28-401 General.
18-28-401.1 Scope.
   This article shall govern the ventilation of spaces within a building intended to be occupied.
18-28-401.2 Ventilation required.
   Every occupied space shall be ventilated by natural means in accordance with Section 18-28-402 or by mechanical means in accordance with Section 18-28-403.

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