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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
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
CHAPTER 15-16 FIRE PROTECTION EQUIPMENT
ARTICLE I. FIRE PROTECTION (15-16-010 et seq.)
ARTICLE II. FIRE PROTECTION EQUIPMENT (15-16-170 et seq.)
PART 1. STANDARD SPRINKLER SYSTEMS (15-16-170 et seq.)
15-16-170 Definition of system.
15-16-180 Other definitions.
15-16-190 Permit and fees.
15-16-200 Installation certification.
15-16-210 Inspections.
15-16-220 Notice of defective conditions.
15-16-230 Requirements for light hazard occupancies.
15-16-240 Requirements for extra hazardous occupancies.
15-16-250 Requirements for special systems.
15-16-260 System tests.
15-16-270 Water supply requirements.
15-16-280 Use of pressure tank for other services.
15-16-290 Gravity tanks.
15-16-300 Pressure tanks.
15-16-310 Fire pumps.
15-16-311 Test manifold.
15-16-320 Supply to tanks.
15-16-330 Filling pipe.
15-16-340 Small equipment.
15-16-350 Location and arrangement of sprinklers.
15-16-351 Display booths.
15-16-360 Sprinklers.
15-16-370 Sprinkler piping.
15-16-380 Piping supports.
15-16-390 Siamese connections.
15-16-400 Valves.
15-16-410 System drainage.
15-16-420 Hand hose connections.
15-16-430 Protection against freezing.
15-16-440 Protection against corrosion.
15-16-450 Test pipes.
15-16-451 Test pipes for high-rise buildings.
15-16-460 Dry pipe systems.
15-16-470 Dry pipe system capacity limits.
15-16-480 Quick opening devices.
15-16-490 Non-freezing systems.
15-16-500 Gauges.
15-16-510 Relief valves.
15-16-520 Painting or finishing.
15-16-530 Alarms.
15-16-540 Spare sprinklers.
15-16-550 Reserved.
15-16-560 Reserved.
15-16-570 Reserved.
15-16-580 Reserved.
15-16-590 Reserved.
15-16-600 Hydraulically calculated sprinkler systems.
15-16-601 Residential sprinklers.
15-16-610 Retroactivity.
15-16-611 Carbon dioxide extinguishing systems.
PART 2. STANDARD FIRE EXTINGUISHERS (15-16-620 et seq.)
PART 3. STANDARD INSIDE STANDPIPE SYSTEMS (15-16-710 et seq.)
PART 4. STANDARD FIRE ALARM SYSTEMS (15-16-1200 et seq.)
PART 5. SPRINKLER SYSTEMS - ADDITIONAL PROVISIONS (15-16-1520 et seq.)
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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15-16-440  Protection against corrosion.
   All piping shall be protected against corrosion. Sprinkler heads located in places where subject to corrosion shall be especially designed or protected against such corrosion.
   Where pipe is used underground, the pipe shall be protected against corrosion.
(Prior code §  91-28; Amend Coun. J. 10-30-96, p. 31216, § 1)
15-16-450  Test pipes.
   A test pipe of not less than one inch diameter, with a smooth bore corrosion resistant outlet giving a flow equivalent to one sprinkler of a type having the smallest orifice installed in the system, shall be provided on wet sprinkler systems. This test pipe shall be connected to the end of the most remote branch line at the highest level of the system. There shall be a separate test pipe for each system. A test valve, which is not exposed to freezing, shall be provided to allow use of the connection.
   A test pipe as provided above shall be installed in each dry sprinkler system. The test valve shall be equipped with a brass plug or a nipple and cap.
(Prior code §  91-29; Amend Coun. J. 10-30-96, p. 31216, § 1)
15-16-451  Test pipes for high-rise buildings.
   In high-rise buildings the test pipe for a sprinkler system may be placed at the water flow switch or the valve controlling the sprinklers for an individual floor or portion of a floor. The test connection shall be a listed sight test connection utilizing an orifice equivalent to a sprinkler of a type having the smallest orifice used in the system. The test connection shall terminate at a drain capable of accepting full flow of one sprinkler under system pressure.
(Added Coun. J. 10-30-96, p. 31216, § 1)
15-16-460  Dry pipe systems.
   A dry pipe system shall be permitted only where heat is not adequate to prevent freezing of water in all or sections of a system. If the sprinklers in such unheated spaces are 25 percent or less of the total number of sprinklers required on a system having a total of 100 or more sprinklers, only such 25 percent or less shall be on the dry system and the remainder shall be on the wet system.
   The dry pipe system shall be isolated from the water supplies (or from the wet portion of the system, if a combined wet and dry pipe system) by a dry pipe valve located at an accessible point as near as practicable to the dry system, adequately protected against mechanical injury and freezing.
(Prior code §  91-30; Amend Coun. J. 10-30-96, p. 31216, § 1)
15-16-470  Dry pipe system capacity limits.
   No more than 500 sprinklers shall be controlled by one dry pipe valve. The capacities given below for various sizes of pipe shall be used to calculate the capacity of a system.
Capacity Per Foot of Pipe
Diameter
Gallons
Schedule 40
Schedule 10
Capacity Per Foot of Pipe
Diameter
Gallons
Schedule 40
Schedule 10
1 in.
.045
.049
1 1/4 in.
.078
.085
1 1/2 in.
.106
.115
2 in.
.174
.190
2 1/2 in.
.248
.283
3 in.
.383
.433
3 1/2 in.
.513
.576
4 in.
.660
.740
5 in.
1.040
1.144
6 in.
1.501
1.649
8 in.
2.66
2.776
 
   Gridded dry pipe systems shall not be permitted.
(Prior code §  91-31; Amend Coun. J. 10-30-96, p. 31216, § 1)
15-16-480  Quick opening devices.
   Dry pipe valves controlling systems having a capacity of more than 500 gallons shall be provided with a quick opening device. The quick opening device shall be located as close as possible to the dry pipe valve while providing protection to the restriction orifice and other operating parts against submergence in water resulting from system drainage or priming. A soft disc globe or angle valve shall be installed in the connection between the dry pipe valve and the quick opening device. A check valve shall be provided also in the connection between quick opening device and the intermediate chamber of the dry pipe valve to prevent the escape of water if the dry valve should trip with the quick opening device disconnected. If the quick opening device requires a pressure feedback from the intermediate chamber, a valve type that will clearly indicate whether it is opened or closed shall be permitted in place of the check valve.
(Prior code §  91-32; Amend Coun. J. 10-30-96, p. 31216, § 1)
15-16-490  Non-freezing systems.
   Sprinkler piping in small unheated areas exposed to frost shall be filled with pure glycerine solution only. The total number of sprinklers in such areas shall not exceed 20. A durable sign or metal tag shall be firmly attached to the solution filling connection plainly marked “THE CITY CODE REQUIRES THE USE OF A PURE GLYCERINE SOLUTION ONLY”.
   The sprinklers on the piping filled with glycerine shall be below the interface between the water and antifreeze solutions provided that sprinklers may be located above the interface between the water and the antifreeze when a check value with a one-thirty-second inch hole in the clapper is provided in a U-loop. A water control valve and two small solution test valves shall be provided.
(Prior code §  91-33; Amend Coun. J. 10-30-96, p. 31216, § 1)
15-16-500  Gauges.
   There shall be provided dial spring pressure gauges in each sprinkler system on the riser above and below the alarm valve if so equipped, at the system main drain; at each main drain associated with a floor control valve; at the pressure tanks and in each independent pipe from the air supply to dry pipe systems.
   Gauges shall be graduated from zero to a pressure approximately double the normal working pressure of the system to which they are connected. Pressure gauges shall have a connection to the sprinkler system not less than one-quarter inch. Each gauge connection shall be equipped with a shutoff valve and provision for draining.
(Prior code §  91-34; Amend Coun. J. 10-30-96, p. 31216, § 1)
15-16-510  Relief valves.
   A brass relief valve not less than one and one-half inches in size shall be installed at the filling pump, set to relieve pressures ten percent in excess of the pressure at the pump when the pressure tank is under normal working pressure.
   A brass relief valve not less than three-fourths inch in size set to relieve pressures ten percent in excess of the normal pressure shall be installed in the air pipe between the check valve and the air compressor.
(Prior code §  91-35; Amend Coun. J. 10-30-96, p. 31216, § 1)
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