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Prior Chicago Building Code
BUILDING CODE AND RELATED EXCERPTS OF THE MUNICIPAL CODE OF CHICAGO
DIVISION 1 - ADMINISTRATION
DIVISION 2 - DEFINITIONS
DIVISION 3 - USE AND OCCUPANCY CLASSIFICATIONS
Subdivision 302 - Classification
Subdivision 303 - Assembly
CHAPTER 13-84 ASSEMBLY UNITS
13-84-010 General requirements.
13-84-020 Capacity of schools.
13-84-030 Frontage requirements.
13-84-040 Special height limitations.
13-84-050 Special enclosures and separations.
13-84-060 Special fire-resistive requirements.
13-84-070 Definitions.
13-84-080 Construction requirements - Type 1 stages.
13-84-090 Construction requirements - Type 2 stages.
13-84-100 Stage vents - Type 1 stages.
13-84-110 Proscenium opening - Type 1 stages.
13-84-120 Projection rooms.
13-84-130 Bowling alleys.
13-84-140 Planning requirements for Type I schools.
13-84-150 Planning requirements for Type III schools.
13-84-160 Special exit requirements.
13-84-170 Minimum number of exits.
13-84-180 Width of exits.
13-84-190 Location of exits.
13-84-200 Exit connections.
13-84-210 Exit courts and exit passageways.
13-84-220 Waiting spaces.
13-84-230 Aisles and seating.
13-84-240 Railings.
13-84-250 Ramps and steps.
13-84-260 Exits from stage block.
13-84-270 Fixed seating.
13-84-280 Schools for handicapped children - Elevator requirements.
13-84-290 Accessibility for handicapped.
13-84-300 Exhibition areas in excess of 10,000 square feet.
13-84-310 Automatic smoke and heat vents - Requirements for topmost occupied levels.
13-84-320 Noncombustible draft curtains - Where required.
13-84-330 Automatic smoke and heat vents - Requirements for lower floor levels.
13-84-331 Special requirement for nightclubs and restaurants.
13-84-340 Exhibition area minimum aisle width.
13-84-350 Smoke detectors.
13-84-351 Temporary display booths.
13-84-360 Storage of combustible containers.
13-84-370 Open plan schools - Individual plan floor areas.
13-84-380 Stair enclosures.
13-84-390 Fire guard requirements.
13-84-400 Floor plan diagram to be submitted to department of buildings.
13-84-410 Building capacity - Signs to be posted.
13-84-420 Building capacity - Approval required.
13-84-430 Exit and aisle regulations.
CHAPTER 13-88 OPEN AIR ASSEMBLY UNITS
Subdivision 304 - Business
Subdivision 306 - Factory
Subdivision 307 - High-Hazard
Subdivision 308 - Institutional
Subdivision 309 - Mercantile
Subdivision 310 - Residential
Subdivision 311 - Storage
Subdivision 312 - Utility and Miscellaneous
DIVISION 4 - SPECIAL DETAILED REQUIREMENTS BASED ON USE AND OCCUPANCY
DIVISION 5 - GENERAL BUILDING HEIGHTS AND AREAS
DIVISION 6 - TYPES OF CONSTRUCTION
DIVISION 7 - FIRE-RESISTANCE-RATED CONSTRUCTION
DIVISION 8 - INTERIOR FINISHES (NA)
DIVISION 9 - FIRE PROTECTION SYSTEMS
DIVISION 10 - MEANS OF EGRESS
DIVISION 11 - ACCESSIBILITY
DIVISION 12 - INTERIOR ENVIRONMENT
DIVISION 13 - ENERGY EFFICIENCY AND ENVIRONMENTAL PROTECTION
DIVISION 14 - EXTERIOR WALLS (NA)
DIVISION 15 - ROOF ASSEMBLIES AND ROOFTOP STRUCTURES (NA)
DIVISION 16 - STRUCTURAL DESIGN
DIVISION 17 - STRUCTURAL TESTS AND SPECIAL INSPECTIONS
DIVISION 18 - SOILS AND FOUNDATIONS
DIVISION 19 - CONCRETE
DIVISION 20 - ALUMINUM (NA)
DIVISION 21 - MASONRY
DIVISION 22 - STEEL
DIVISION 23 - WOOD
DIVISION 24 - GLASS AND GLAZING (NA)
DIVISION 25 - GYPSUM BOARD AND PLASTER (NA)
DIVISION 26 - PLASTIC (NA)
DIVISION 27 - ELECTRICAL
DIVISION 28 - MECHANICAL SYSTEMS
DIVISION 29 - PLUMBING SYSTEMS
DIVISION 30 - ELEVATORS AND CONVEYING SYSTEMS
DIVISION 31 - SPECIAL CONSTRUCTION (NA)
DIVISION 32 - ENCROACHMENTS INTO THE PUBLIC RIGHT-OF-WAY
DIVISION 33 - SAFEGUARDS DURING CONSTRUCTION
DIVISION 34 - EXISTING STRUCTURES
DIVISION 35 - REFERENCED STANDARDS

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Subdivision 303 – Assembly
CHAPTER 13-84
ASSEMBLY UNITS
13-84-010   General requirements.
13-84-020   Capacity of schools.
13-84-030   Frontage requirements.
13-84-040   Special height limitations.
13-84-050   Special enclosures and separations.
13-84-060   Special fire-resistive requirements.
13-84-070   Definitions.
13-84-080   Construction requirements – Type 1 stages.
13-84-090   Construction requirements – Type 2 stages.
13-84-100   Stage vents – Type 1 stages.
13-84-110   Proscenium opening – Type 1 stages.
13-84-120   Projection rooms.
13-84-130   Bowling alleys.
13-84-140   Planning requirements for Type I schools.
13-84-150   Planning requirements for Type III schools.
13-84-160   Special exit requirements.
13-84-170   Minimum number of exits.
13-84-180   Width of exits.
13-84-190   Location of exits.
13-84-200   Exit connections.
13-84-210   Exit courts and exit passageways.
13-84-220   Waiting spaces.
13-84-230   Aisles and seating.
13-84-240   Railings.
13-84-250   Ramps and steps.
13-84-260   Exits from stage block.
13-84-270   Fixed seating.
13-84-280   Schools for handicapped children – Elevator requirements.
13-84-290   Accessibility for handicapped.
13-84-300   Exhibition areas in excess of 10,000 square feet.
13-84-310   Automatic smoke and heat vents – Requirements for topmost occupied levels.
13-84-320   Noncombustible draft curtains – Where required.
13-84-330   Automatic smoke and heat vents – Requirements for lower floor levels.
13-84-331   Special requirement for nightclubs and restaurants.
13-84-340   Exhibition area minimum aisle width.
13-84-350   Smoke detectors.
13-84-351   Temporary display booths.
13-84-360   Storage of combustible containers.
13-84-370   Open plan schools – Individual plan floor areas.
13-84-380   Stair enclosures.
13-84-390   Fire guard requirements.
13-84-400   Floor plan diagram to be submitted to department of buildings.
13-84-410   Building capacity – Signs to be posted.
13-84-420   Building capacity – Approval required.
13-84-430   Exit and aisle regulations.
13-84-010  General requirements.
   Every building or part of a building hereafter designed, erected, altered or converted for the purposes of an assembly unit as defined in Section 13-56-070 shall comply with the special provisions of this chapter and also with the general provisions of this Code pertaining to buildings, including, but not limited to, the following:
Chapter 13-56 Classifications of Buildings by Occupancy.
   Section 13-56-230 Mixed occupancy.
   Section 13-56-300 Occupancy content.
Chapter 13-60 Classification of Buildings by Construction Type.
Chapter 13-116 Fire Limits – Location Limitations.
   Sections 13-116-040 and 13-116-050 Location on property.
   Sections 13-116-080 to 13-116-130 Inclusive. Limitations within fire limits.
Chapter 13-48 Height and Area Limitations.
   Section 13-48-010 Height limitations.
   Section 13-48-050 Area limitations.
   Section 13-48-100 Mixed occupancy.
Chapter 15-8 Fire-Resistive Requirements.
   Section 15-8-010 Fire walls.
   Section 15-8-070 Exterior walls.
   Sections 15-8-120, 15-8-190, 15-8-240 Enclosures and separations.
   Section 15-8-250 Partitions.
   Section 15-8-280 Exterior trim.
   Section 15-8-330 Roof coverings.
   Section 15-8-370 Interior wall and ceiling finish and trim.
   Section 15-8-450 Flooring.
   Section 15-8-510 Roof structures.
   Section 15-8-570 Firestopping.
Chapter 18-28 Chimneys, Flues and Vents.
Chapter 15-16 Fire Protection Equipment.
Chapter 15-12 Fire-Resistive Materials and Construction.
Chapter 13-160 Exit Requirements.
   Section 13-160-030 Types of exits.
   Section 13-160-050 Minimum number of exits.
   Section 13-160-060 Arrangement and location of exits.
   Section 13-160-110 Travel distance to exits.
   Section 13-160-170 Width of exits.
   Section 13-160-230 Outside exits.
   Section 13-160-240 Doors.
   Section 13-160-290 Stairways.
   Section 13-160-360 Smokeproof towers.
   Section 13-160-430 Ramps.
   Section 13-160-480 Horizontal exits.
   Section 13-160-580 Exterior stairs.
   Section 13-160-630 Fire escapes.
   Section 13-160-660 Exit lighting.
   Section 13-160-700 Exit signs.
Chapter 13-52 Minimum Design Loads.
Chapter 13-120 Materials, Methods and Tests.
Chapter 13-132 Foundations.
Chapter 13-140 Masonry Construction.
Chapter 13-144 Wood Construction.
Chapter 13-136 Concrete Construction.
Chapter 13-148 Steel and Metal Construction.
Chapter 13-124 Safety Requirements.
Chapter 13-124 Safeguards During Construction.
Chapter 13-128 Use of Public Property.
Chapter 13-196 Existing Buildings.
Chapter 18-28 Heating.
Chapter 18-28 Ventilation.
Chapter 13-172 Light And Ventilation.
Chapter 18-29 Plumbing.
Chapter 18-29 Sanitation Requirements.
Title 14C Conveyance Devices.
Title 14E Electrical Requirements.
(Prior code § 54-1; Amend Coun. J. 6-14-95, p. 2841; Amend Coun. J. 4-29-98, p. 66679, § 2; Amend Coun. J. 10-17-09, p. 72419, § 15; Amend Coun. J. 11-9-16, p. 36266, § 18; Amend Coun. J. 9-6-17, p. 55278, Art. II, § 26; Amend Coun. J. 3-28-18, p. 74459, Art. II, § 12)
13-84-020  Capacity of schools.
   The total capacity of a school shall be determined in accordance with the occupancy content factors established in Section 13-56-310, except that rooms not used or used only occasionally by students shall not be included in computing each total capacity. Such rooms and spaces include the following:
   Assembly rooms and gymnasiums;
   Cafeterias and lunchrooms;
   Locker, toilet and storage rooms;
   Corridors and other circulation space;
   Service and equipment rooms.
(Prior code § 54-2)
13-84-030  Frontage requirements.
   Every assembly unit shall have frontage upon one or more open spaces consisting of streets not less than 30 feet wide or public alleys or other open spaces not less than ten feet wide which lead directly to a street. Frontage requirements shall be determined according to capacity and shall comply with the requirements established in Table 13-84-030 as set out in this section.
Table 13-84-030
Frontage Required for Assembly Units
 
Capacity Frontage
Frontage
Type I Schools
Other Assembly Units
On Street
On Street or Other Open Space
200 or less
One side
501 or less
200 to 800
One side
One side
501 to 1,000
More than 800
One side
Two sides
1,001 to 2,500
Two sides
One side
More than 2,500
Three sides
One side
 
(Prior code § 54-3)
13-84-040  Special height limitations.
   (a)   The main seating level of every theater shall be so located that normal exits from the foyer shall lead to a public street without change in level other than by means of ramps having a slope not exceeding one in 10.
   (b)   No seating level in rooms used for assembly occupancy and having a capacity of more than 300 persons shall be at a level more than 20 feet above grade except in buildings of Types I-A or I-B construction.
   (c)   No assembly occupancy shall be located at a level more than 20 feet below grade in buildings of Types I-A or I-B construction, nor more than ten feet below grade in buildings of other types of construction.
(Prior code § 54-4)
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