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Storm Drainage (18-29-1101 et seq.)

Municipal Code of Chicago tit. 18, ch. 18-29, art. 11
in effect

Municipal Code of Chicago § 18-29-1101.2.1 Roof drainage and downspouts.

18-29-1101.2.1 Roof drainage and downspouts. All roofs exceeding 750 square feet (69.7 m 2 ) in area shall be drained to a sewer, where such is available in any adjoining public way, or public place. Every connecting roof downspout having the open roof connection, located nearer than 12 feet (3.66 m) to an inside lot line or any door or window on the same premises, shall be trapped on the downspout side of the connection to any sanitary sewer or any combined sewer or drain, and shall be set where not subject to frost. Exceptions: 1. Nothing in this provision shall prohibit the temporary or permanent disconnection of the roof downspout of a building from the sewer or combined sewer so long as the disconnection does not result in the drainage of water beyond the property lines of the lot on which the building is located, or create a public hazard or nuisance. 2. Roofs of buildings of Group R-2, R-3, R-4 or R-5 occupancy and single-story buildings of any occupancy may be provided with external downspouts discharging onto a paved or landscaped area, provided the water thus discharged can be drained directly to an area drain or catch basin connected to a public sewer, without spilling over onto adjacent property, including the public way, or creating a public hazard or nuisance. 3. If there is a conflict between this section and a site's stormwater management plan approved by the department of water management, the stormwater management plan shall prevail. (Amend Coun. J. 3-27-02, p. 82090, § 3; Amend Coun. J. 7-29-15, p. 3537, § 4; Amend Coun. J. 10-14-21, p. 37722, Art. XI, § 1)

Municipal Code of Chicago § 18-29-1101.2.2 Drainage of areas and yards.

18-29-1101.2.2 Drainage of areas and yards. Outside areas other than roof areas may be drained to a sewer and when paved shall be so drained where necessary to avoid the discharge of water onto adjoining premises. Paved areas of 400 square feet or less where connected to the sewer shall be provided with trapped connections before connecting to any sanitary sewer or combined sewer, with traps placed where not subject to frost. Outside areas exceeding 400 square feet (37.2 m2), and not more than 5,000 square feet (1,524 m2), where connected to sewers, shall be connected through a catchbasin, not less than 3 feet (915 mm) in diameter and not less than 3 feet (915 mm) deep below the bottom of the trap. Areas of more than 5,000 square feet (1,524 m2) shall be provided with a catchbasin not less than 4 feet (1,220 mm) in diameter and not less than 3 feet 6 inches (1,067 mm) deep below the bottom of the trap. To the extent possible, no sheet flow or discharge of stormwater that creates a public hazard or nuisance shall be allowed to adjacent private property or the public way. (Amend Coun. J. 7-29-15, p. 3537, § 4)

Municipal Code of Chicago § 18-29-1101.2.3 Storm runoff.

18-29-1101.2.3 Storm runoff. Construction which is tributary to the combined sewer system of the city of Chicago shall be designed to minimize and/or delay runoff inflow contributions to the combined sewer system in accordance with the following: 1. Disconnection. For sites of 5,000 square feet (1,524 m2) in area and smaller, except multiple unit developments, storm runoff will be minimized or delayed by the disconnection of downspouts, temporary or otherwise, in accordance with Section 18-29-1101.2.1 and any other applicable sections of this chapter and the department of water management design standards. 2. Detention. For sites greater than 5,000 square feet (1,524 m2), and multiple unit developments, storm runoff shall be detained in accordance with, and is required by, the department of water management design standards. The release rate of detained storm runoff shall be managed on the available capacity of the combined storm sewer system as determined by the department of water management. (Amend Coun. J. 3-27-02, p. 82090, § 3; Amend Coun. J. 11-8-12, p. 38872, § 375)

Municipal Code of Chicago § 18-29-1101.5 Continuous flow.

18-29-1101.5 Continuous flow. The size of a drainage pipe shall not be reduced in the direction of the flow. (Amend Coun. J. 11-8-12, p. 38872, § 376)

Municipal Code of Chicago § 18-29-1101.6 Fittings and connections.

18-29-1101.6 Fittings and connections. All connections and changes in direction of the storm drainage system shall be made with approved drainage-type fittings in accordance with Table 18-29-706.3. The fittings shall not obstruct or retard flow in the system.

Municipal Code of Chicago § 18-29-1101.7 Roof design.

18-29-1101.7 Roof design. Roofs shall be designed for the maximum possible depth of water that will pond thereon as determined by the relative levels of roof deck and overflow weirs, scuppers, edges or serviceable drains in combination with the deflected structural elements. In determining the maximum possible depth of water, all primary roof drainage means shall be assumed to be blocked. (Amend Coun. J. 10-14-21, p. 37722, Art. XI, § 2)

Municipal Code of Chicago § 18-29-1101.8 Cleanouts required.

18-29-1101.8 Cleanouts required. Cleanouts shall be installed in the storm drainage system and shall comply with the provisions of this chapter for sanitary drainage pipe cleanouts or as required by the department of water management design standards. (Amend Coun. J. 3-27-02, p. 82090, § 3; Amend Coun. J. 11-8-12, p. 38872, § 377)

Municipal Code of Chicago § 18-29-1102.1 General.

18-29-1102.1 General. The materials and methods utilized for the construction and installation of storm drainage systems shall comply with this section and the applicable provisions of Article 18-29-7.

Municipal Code of Chicago § 18-29-1102.2 Inside storm drainage conductors.

18-29-1102.2 Inside storm drainage conductors. Inside storm drainage conductors installed above ground shall conform to one of the standards listed in Table 18-29-702.1.

Municipal Code of Chicago § 18-29-1102.3 Underground building storm drain pipe.

18-29-1102.3 Underground building storm drain pipe. Underground building storm drain pipe shall conform to one of the standards listed in Table 18-29-702.2, except that neither polyvinyl chloride (PVC) nor polypropylene (PPL) pipe and fittings shall be allowed in stormwater detention applications as oversized pipe.

Municipal Code of Chicago § 18-29-1102.4 Building storm sewer standards.

18-29-1102.4 Building storm sewer standards. Building storm sewers shall conform to one of the standards listed in Table 18-29-702.3. (Amend Coun. J. 3-27-02, p. 82090, §§ 1, 3; Amend Coun. J. 7-29-15, p. 3537, § 4)

Municipal Code of Chicago § 18-29-1102.5 Subsoil drain pipe.

18-29-1102.5 Subsoil drain pipe. Subsoil drains shall be open-jointed, horizontally split or perforated pipe conforming to one of the standards listed in Table 18-29-1102.5, except corrugated pipe is not allowed. Table 18-29-1102.5 Subsoil Drain Pipe Material | Standard Cast-iron pipe | ASTM A74; ASTM A888; CISPI 301 Polyethylene (PE) plastic pipe | ASTM F405; ASTM F667; CSA B182.1; CSA B182.6; CSA B182.8 Polyvinyl chloride (PVC) plastic pipe (Type Sewer Pipe, PS25, SDR35, PS50 or PS100) | ASTM D 2729; ASTM D3034; ASTM F891; CSA B182.2; CSA B182.4 Stainless steel drainage systems, Type 316L | ASME A112.3.1 Vitrified clay pipe | ASTM C4; ASTM C700 (Amend Coun. J. 7-29-15, p. 3537, § 4; Amend Coun. J. 10-14-21, p. 37722, Art. XI, § 3)

Municipal Code of Chicago § 18-29-1102.7 Fittings.

18-29-1102.7 Fittings. Pipe fittings shall be approved for installation with the piping material installed, and shall conform to the respective pipe standards or one of the standards listed in Table 18-29-702.4. The fittings shall not have ledges, shoulders or reductions capable of retarding or obstructing flow in the piping. Threaded drainage pipe fittings shall be of the recessed drainage type.

Municipal Code of Chicago § 18-29-1103.1 Main trap.

18-29-1103.1 Main trap. Leaders and storm drains connected to a combined sewer shall be trapped. Individual storm water traps shall be installed on the storm water drain branch serving each conductor, or a single trap shall be installed in the main storm drain just before its connection with the combined building sewer or the public sewer. One trap may serve more than one downspout, and any such trap shall be on the upstream side of the connection to any sanitary sewer or any combined sewer or drain, and shall be set where not subject to frost. (Amend Coun. J. 6-17-26, p. 45214, Art. IV, § 63)

Municipal Code of Chicago § 18-29-1104.1 Prohibited use.

18-29-1104.1 Prohibited use. Conductor pipes shall not be used as soil, waste or vent pipes, and soil, waste or vent pipes shall not be used as conductors.

Municipal Code of Chicago § 18-29-1104.1.1 District sewer lines.

18-29-1104.1.1 District sewer lines. In service areas developed after May 30, 2003, where separate sanitary and storm sewers are constructed, drain connections for buildings constructed after May 30, 2003 shall have separate sanitary waste water and storm water connections. (Added Coun. J. 5-7-03, p. 621, § 1)

Municipal Code of Chicago § 18-29-1104.2 Combining storm with sanitary drainage.

18-29-1104.2 Combining storm with sanitary drainage. The sanitary and storm drainage systems of a structure shall be entirely separate except where combined sewer systems are utilized. Where a combined sewer is utilized, the building storm drain shall be connected in the same horizontal plane at or downstream of where the building drain exits the building.

Municipal Code of Chicago § 18-29-1104.2.1 Separate sewer systems.

18-29-1104.2.1 Separate sewer systems. Where feasible, storm water inflows to the existing combined sewer in the public right-of-way shall be directed to a separate storm sewer, should a separate public storm sewer become available. Such re-direction of storm water inflows shall take place within five years of the establishment and availability of a separate public storm sewer, or such reasonable longer period of time as in the judgment of the commissioner of water management is necessary to accomplish such re- direction. This requirement shall not apply to buildings in existence on May 30, 2003, located on private property, that do not have distinct sanitary waste water and storm water connections. (Added Coun. J. 5-7-03, p. 621, § 1)

Municipal Code of Chicago § 18-29-1105.1 Strainers.

18-29-1105.1 Strainers. Roof drains shall have strainers extending not less than 4 inches (100 mm) above the surface of the roof immediately adjacent to the roof drain. Strainers shall have an available inlet area, above roof level, of not less than one and one-half times the area of the conduct or leader to which the drain is connected. All downspouts from gravel roofs shall be fitted with serviceable devices to screen out loose gravel.

Municipal Code of Chicago § 18-29-1105.2 Flat decks.

18-29-1105.2 Flat decks. Roof drain strainers for use on recreational decks, sun decks, parking decks and similar areas that are normally serviced and maintained shall comply with Section 18-29-1105.1 or shall be of the flat-surface type, installed level with the deck, with an available inlet area not less than two times the area of the conductor or leader to which the drain is connected.

Municipal Code of Chicago § 18-29-1105.3 Roof drain flashing.

18-29-1105.3 Roof drain flashing. The connection between roofs and roof drains which pass through the roof and into the interior of the building shall be made water tight by the use of approved flashing material. Refer to Section 18-29-305.7.

Municipal Code of Chicago § 18-29-1106.1 General.

18-29-1106.1 General. The size of the vertical conductors and leaders, building storm drains, building storm sewers, and any horizontal branches of such drains or sewers shall be in compliance with Sections 18-29-1106.2 through 18-29-1106.6.

Municipal Code of Chicago § 18-29-1106.2 Vertical conductors and leaders.

18-29-1106.2 Vertical conductors and leaders. No downspout shall be of smaller size than shown in Table 18-29-1106.2, based on the maximum horizontal projected roof area drained. Downspouts that are offset at 90 degrees shall be sized as a horizontal storm drain and shall be full size to the storm drain or sewer or combined drain or sewer. The above sizes of downspouts are based on the diameter of circular downspouts and other shapes shall have equivalent cross-sectional area. Table 18-29-1106.2 Downspouts Diameter of Downspout (inches) | Max. Horizontal Projected Roof Area (square feet) Diameter of Downspout (inches) | Max. Horizontal Projected Roof Area (square feet) 2 | 720 2 1/2 | 1,300 3 | 2,150 4 | 4,600 5 | 8,300 6 | 13,000 8 | 29,000 10 | 52,000 12 | 83,000 13 | 155,000

Municipal Code of Chicago § 18-29-1106.3 Building storm drains and sewers.

18-29-1106.3 Building storm drains and sewers. The size of the building storm drain, building storm sewer and their horizontal branches shall be based on the maximum projected roof area in accordance with Table 18-29-1106.3. The minimum slope of horizontal branches shall be one-eighth unit vertical in 12 units horizontal (1-percent slope) unless otherwise approved.

Municipal Code of Chicago § 18-29-1106.4 Vertical walls.

18-29-1106.4 Vertical walls. In sizing roof drains and storm drainage piping, 25 percent of the area of any vertical wall that diverts rainwater to the roof shall be added to the projected roof area for inclusion in calculating the required size of vertical conductors, leaders and horizontal storm drainage piping.

Municipal Code of Chicago § 18-29-1106.5 Parapet wall scupper location.

18-29-1106.5 Parapet wall scupper location. Parapet wall roof drainage scupper location shall comply with the requirements of Section 18-29-1101.7. Exception: Scuppers are not permitted in fire walls and lot-line parapets, provided in accordance with Chapter 15-8 or 14B-7, as applicable. (Amend Coun. J. 4-10-19, p. 100029, Art. XVI, § 12)

Municipal Code of Chicago § 18-29-1106.6 Size of roof gutters.

18-29-1106.6 Size of roof gutters. The size of semicircular gutters shall be based on the maximum projected roof area in accordance with Table 18-29-1106.6. Table 18-29-1106.3 Size of Horizontal Storm Drainage Piping Pipe Size | 1/8 Unit Vertical in 12 Units Horizontal (1-percent slope) | 1/4 Unit Vertical in 12 Units Horizontal (2-percent slope) | 1/2 Unit Vertical in 12 Units Horizontal (4-percent slope) Square Feet | Square Feet | Square Feet Pipe Size | 1/8 Unit Vertical in 12 Units Horizontal (1-percent slope) | 1/4 Unit Vertical in 12 Units Horizontal (2-percent slope) | 1/2 Unit Vertical in 12 Units Horizontal (4-percent slope) Square Feet | Square Feet | Square Feet 3 | 822 | 1,160 | 1,644 4 | 1,800 | 2,650 | 3,760 5 | 3,340 | 4,720 | 6,680 6 | 5,350 | 7,550 | 10,700 8 | 11,500 | 16,300 | 23,000 10 | 20,700 | 29,200 | 41,400 12 | 33,300 | 47,000 | 66,600 15 | 599,500 | 84,000 | 119,000 For SI: 1 inch = 25.4 mm, 1 square foot = 0.0929 m2. (Amend Coun. J. 4-15-15, p. 106130, § 24) Table 18-29-1106.6 Size of Semicircular Roof Gutters Diameter of Gutters (inches) | Square Feet | Diameter of Gutters (inches) | Square Feet | Diameter of Gutters (inches) | Square Feet | Diameter of Gutters (inches) | Square Feet 1/16 Unit Vertical in 12 Units Horizontal (0.5-percent slope) | 1/8 Unit Vertical in 12 Units Horizontal (1-percent slope) | 1/4 Unit Vertical in 12 Units Horizontal (2-percent slope) | 1/2 Unit Vertical in 12 Units Horizontal (4-percent slope) Diameter of Gutters (inches) | Square Feet | Diameter of Gutters (inches) | Square Feet | Diameter of Gutters (inches) | Square Feet | Diameter of Gutters (inches) | Square Feet 1/16 Unit Vertical in 12 Units Horizontal (0.5-percent slope) | 1/8 Unit Vertical in 12 Units Horizontal (1-percent slope) | 1/4 Unit Vertical in 12 Units Horizontal (2-percent slope) | 1/2 Unit Vertical in 12 Units Horizontal (4-percent slope) 3 | 170 | 3 | 240 | 3 | 340 | 3 | 480 4 | 360 | 4 | 510 | 4 | 720 | 4 | 1,020 5 | 625 | 5 | 880 | 5 | 1,250 | 5 | 1,770 6 | 960 | 6 | 1,360 | 6 | 1,920 | 6 | 2,770 7 | 1,380 | 7 | 1,950 | 7 | 2,760 | 7 | 3,900 8 | 1,990 | 8 | 2,800 | 8 | 3,980 | 8 | 5,600 10 | 3,600 | 10 | 5,100 | 10 | 7,200 | 10 | 10,000 For SI: 1 inch = 25.4 mm, 1 square foot = 0.929 m 2.

Municipal Code of Chicago § 18-29-1108.1 Size of combined drains and sewers.

18-29-1108.1 Size of combined drains and sewers. Whenever a combined sewer system is employed, the required size of the combined house sewer shall be determined by adding the total drained area in square feet in Table 18-29-1106.2 and equivalent area for the number of fixture units in accordance with Table 18-29-1108.1. Table 18-29-1108.1 Combined Sanitary and Storm System No. of Fixture Units | Equivalent Area (sq. ft.) | No. of Fixture Units | Equivalent Area (sq. ft.)* No. of Fixture Units | Equivalent Area (sq. ft.) | No. of Fixture Units | Equivalent Area (sq. ft.)* 1 | 165 | 31 | 2,820 2 | 325 | 32 | 2,870 3 | 475 | 34 | 2,955 5 | 750 | 38 | 3,125 6 | 875 | 40 | 3,200 7 | 1,000 | 42 | 3,270 8 | 1,115 | 44 | 3,340 9 | 1,225 | 46 | 3,400 10 | 1,330 | 48 | 3,465 11 | 1,435 | 50 | 3,350 12 | 1,530 | 55 | 3,530 13 | 1,620 | 60 | 3,790 14 | 1,710 | 65 | 3,900 15 | 1,800 | 70 | 4,000 16 | 1,880 | 75 | 4,090 17 | 1,960 | 80 | 4,175 18 | 2,040 | 85 | 4,250 19 | 2,110 | 90 | 4,320 20 | 2,180 | 95 | 4,390 21 | 2,250 | 100 | 4,450 22 | 2,310 | 105 | 4,500 23 | 2,360 | 110 | 4,550 24 | 2,440 | 115 | 4,600 25 | 2,500 | 120 | 4,645 26 | 2,550 | 125 | 4,690 27 | 2,600 | 130 | 4,725 28 | 2,660 | 140 | 4,800 29 | 2,710 | 145 | 4,830 30 | 2,770 | 150 | 4,850 * For more than 150 fixture units, the equivalent area shall be determined by adding 7.2 square feet for each fixture unit over 150 to 4,850 square feet.

Municipal Code of Chicago § 18-29-1109.1 Equivalent roof area.

18-29-1109.1 Equivalent roof area. Where there is a continuous or semi-continuous discharge into the building storm drain or building storm sewer, such as from a pump, ejector, air conditioning plant or similar device, each gallon per minute (L/m) of such discharge shall be computed as being equivalent to 24 square feet (2.25 m 2 ) of roof area. (See Table 18-29-1108.1)

Municipal Code of Chicago § 18-29-1110.1 General.

18-29-1110.1 General. The roof of a structure shall be designed for the storage of water where the storm drainage system is engineered for controlled flow. The controlled flow roof drain system shall be an engineered system in accordance with this section and the design, submittal, approval, inspection and testing requirements of Section 18-29-1105.4. In lieu of the conventional downspout requirements of Section 18-29-1106, controlled flow roof drainage may be used. The water of a 25 year frequency shall not be stored on the roof for more than 24 hours. The water depth on flat roofs shall not exceed 3 inches (75 mm) during the above storm and 3 inches (75 mm) average depth on sloped roofs not exceeding 6 inches (32 mm) rise or depth of slope.

Municipal Code of Chicago § 18-29-1110.1.1 Design.

18-29-1110.1.1 Design. The flow rate (gpm) shall be determined by the use of Chart 18-29-1110.1.1 A for flat roofs and Chart 18-29-1110.1.1 B for slope roofs. The size of the vertical pipe and horizontal pipe shall be determined by the use of Tables 18-29-1110.1.1 C for vertical pipe and Table 18-29-1110.1.1 D for horizontal pipe and in no case shall be less than 3 inches (75 mm). The capacity rating (gpm) of any controlled flow downspout, branch or storm drain shall be converted to an equivalent square foot area by multiplying the gallons per minute (gpm) by 24 (24 square feet of roof area equals 1 gpm) before connecting to any combined house drain or house sewer, and add this value to the total drained area of Section 18-29-1106 of this chapter. Downspouts that are offset at 90 degrees shall be full size to the storm drain or sewer or combined drain or sewer. Chart 18-29-1110.1.1 A and Chart 18-29-1110.1.1 B [image omitted; see the official code] Table 18-29-1110.1.1 Diameter of Downspout | Max. Horizontal Projected Roof Area Square Feet Diameter of Downspout | Max. Horizontal Projected Roof Area Square Feet 2" | 720 2 1/2" | 1,300 3" | 2,150 4" | 4,600 5" | 8,300 6" | 13,000 8" | 29,000 10" | 52,000 12" | 83,000 13" | 155,000 Table 18-29-1110.1.1C Vertical Diameter of Downspout | Max. Vertical Projected Roof Area Square Feet Diameter of Downspout | Max. Vertical Projected Roof Area Square Feet 3" | 88 4" | 190 5" | 345 6" | 560 8" | 1,210 10" | 2,185 12" | 3,570 15" | 6,450 Table 18-29-1110.1.1D Horizontal Maximum Controlled Flow in GPM Pipe Diameter in Inches | Slope in Inches in gpm 1/2 | 1/4 | 1/8 | 1/16 Maximum Controlled Flow in GPM Pipe Diameter in Inches | Slope in Inches in gpm 1/2 | 1/4 | 1/8 | 1/16 3" | 72 | 51 | N.P. | N.P. 4" | 156 | 110 | 78 | N.P. 5" | 282 | 200 | 140 | N.P. 6" | 460 | 325 | 230 | N.P. 8" | 990 | 700 | 495 | N.P. 10" | 1,795 | 1,265 | 895 | 630 12" | | 2,065 | 1,460 | 1,030 15" | | | 2,650 | 1,870

Municipal Code of Chicago § 18-29-1110.2 Control devices.

18-29-1110.2 Control devices. The control devices shall be installed so that the rate of discharge of water per minute shall not exceed the values for continuous flow as indicated in Section 18-29-1110.1.1. A scupper drain or drains shall be placed in the parapet wall at an invert elevation 1/2 inch (12 mm) above the maximum designed head. The scupper shall have a cross sectional area equal to that as required for conventional roof drainage. Control of runoff from roofs shall be by pre-calibrated tamper proof weirs; no valves or mechanical devices shall be permitted. Exception: Scuppers are not permitted in fire walls provided in accordance with Chapter 15-8 or 14B-7, as applicable. (Amend Coun. J. 4-10-19, p. 100029, Art. XVI, § 13)

Municipal Code of Chicago § 18-29-1110.4 Minimum number of roof drains.

18-29-1110.4 Minimum number of roof drains. Not less than two drains shall be installed in roof areas 10,000 square feet (930 m 2 ) or less and not less than four roof drains shall be installed in roofs over 10,000 square feet (930 m 2 ) in area.

Municipal Code of Chicago § 18-29-1111.1 Subsoil drains.

18-29-1111.1 Subsoil drains. Subsoil drains shall be open-jointed, horizontally spill or perforated pipe conforming to one of the standards listed in Table 18-29-1102.5. Such drains shall not be less than 4 inches (100 mm) in diameter. Where the building is subject to backwater, the subsoil drain shall be protected by an accessibly located backwater valve. Subsoil drains shall discharge to a trapped sump or approved location above ground. The subsoil sump shall not be required to have either a gastight cover or a vent. Access for the purpose of cleaning and removing obstructions in subsoil drains shall be provided at every change of direction.

Municipal Code of Chicago § 18-29-1111.2 Building subdrains.

18-29-1111.2 Building subdrains. Building subdrains located below the public sewer level shall discharge into a sump or receiving tank, the contents of which shall be automatically lifted and discharged into the drainage system as required for building sumps.

Municipal Code of Chicago § 18-29-1111.3 Pumping system.

18-29-1111.3 Pumping system. The sump pump, pit and discharge piping shall conform to Sections 18-29-1111.3.1 through 18-29-1111.3.4. No sump or receiving tank shall be less than 30 inches (762 mm) deep and shall be in an accessible location.

Municipal Code of Chicago § 18-29-1111.3.2 Construction.

18-29-1111.3.2 Construction. Except as otherwise approved by the department of water management, a sump pit shall not be less than 18 inches (457 mm) in diameter and 30 inches (762 mm) deep, and shall be constructed of approved fiberglass, vitrified clay, tile, cast iron, steel, reinforced concrete pipe or other approved material, with a removable cover adequate to support anticipated loads in area of use. Approved plastic or fiberglass liners may be used in connection with any of the above. The pit floor or cover shall provide permanent support for the pump. (Amend Coun. J. 3-27-02, p. 82090, § 3; Amend Coun. J. 7-29-15, p. 3537, § 4)

Municipal Code of Chicago § 18-29-1111.3.3 Electrical.

18-29-1111.3.3 Electrical. Electrical service outlets, when required, shall meet the requirements of Title 14E. (Amend Coun. J. 9-6-17, p. 55278, Art. II, § 64)

Municipal Code of Chicago § 18-29-1111.3.4 Piping.

18-29-1111.3.4 Piping. Discharge piping shall meet the requirements of Section 18-29-1102.2, Section 18-29-1102.3 or Section 18-29-1102.4 and shall include a full flow check valve. Duplex pump systems shall include a gate valve and a full flow check valve on discharge of each pump. Size and fittings shall be the same size as, or larger than, pump discharge tapping, nominal or standard sizes as designated in the referenced materials standards.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2692694Fetched: 10/24/2026

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