Part B  
Cook County Ordinances


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Contents of Part B
Article VIII  Residential Building (Class A)

 
The following are not documnted at this web site - refer to Cook County for Ordinances:

Article IX Institutional Buildings (Class B) 
Article X  Assembly Buildings and Structures (Class C)
Article XI  Educational Buildings (Class D)
Article XII  Office Buildings, Business and Professional (Class E)
Article XII  Commercial Buildings (Class F)
Article XIV  Industrial Buildings (Class G)
Article XV  Stoage Buildings (Class H)
Article XVI  High Hazard Buildings and Structure (Class 1)
Article XVII  Unclassified Buildings and Structure (Class J)
Article XVIII  Buildings of Mixed Occupancy (Class K)

For the complete ordinances of all types of buildings - you can purchase the book of ordinances at::

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ARTICLE VIII  RESIDENTIAL BUILDING (CLASS A)

Index
8.1        HEIGHT AND AREA LIMITATIONS
8.2        FIRE RESISTIVE CONSTRUCTION REQUIREMENTS
8.2-1             Single-Family dwelling (Class A1)
8.2-2            Multiple-Family dwelling (Class A2)
8.2-3            Porches
8.3        FIRE PREVENTION AND PROTECTION REQUIREMENTS
8.3-1            Single-Family Dwellings (Class A-1)
8.3-2            Multiple-Family Dwellings (Class A2)
8.4        EXIT REQUIREMENTS
8.4-1            Occupancy Content
8.4-2            Minimum Number of Exits
8.4-3            Maximum Travel Distance to Exits
8.4-4            Capacity of Exits
8.4-5            Stairway Class Required
8.4-6            Revolving Doors
8.4-7            Minimum Doorway Width
8.5        LIGHT AND MINIMUM PLANNING REQUIREMENTS
8-5-1            Artificial Light
8.5-2            Lighting of Habitable Rooms
8.5-3            Minimum Sizes and arrangements of Habitable Rooms
8.5-4            Access
8.6         PLASTIC - PERMITTED USE
8.7        HEATING, MECHANICAL VENTILATING AND REFRIGERATION REQUIREMENTS
8.7-1            Mechanical Ventilation
8-7-1            Maximum Air Velocities
8-7-3            Combustion Air
8-7-4            Refrigeration
8.8        PLUMBING REQUIREMENTS
8.8-1            Location
8.8-2            Separate Facilities
8.8-3            Fixture Requirements
8.8-4            Downspouts
8.8.-5            Footing Drains
8.8-6            Sewage Pump
8.8-7            Septic Tanks
8.8-8            Water Supply Control
8.8-9            Individual Water Supply
8.8-10            Non-Potable Water Supply Prohibited
8.8-11            Individual Plumbing Stacks
8.9        ELECTRICAL REQUIREMENTS
8.9-1            Residential Buildings - General
8.9-2            Single-Family Dwellings
8.9-3            Hotels and Motels and Similar Occupancies
8.9-5            Exit Signs
8.9-6            Emergency Exit Lighting
8.9-7            Residential Private Garages

8.1  HEIGHT AND AREA LIMITATIONS

All Residential Buildings shall comply with the requirements contained in this Article and all the provisions contained in Part C.

8.1-1  Single-Family Dwellings (Class A1)
8.1-1A 
8.1-2  Multiple-Family Dwellings (Class A2)

        MAXIMUM ALLOWABLE HEIGHT
        by Construction Type

Unit of Measure        1A        1B            1C*        II        III            IVA        IVB        VA        VB
Stories                    U            12            6            2            3            3            2            2            1
Feet                        U            150          80          30          45          45          30          30         30

            U    Unlimited
            *    One additional story or fifteen feet additional height shall be allowed when the building is equipped throughout with an approved automatic sprinkler
system and standard fire alarm system..

MAXIMUM ALLOWABLE FLOOR PLAN
by Construction Type (in square feet)

Building Height    1A        1B            1C            II            III            IVA        IVB        VA        VB
One Story            U            U        24,000        10,000    10,000    10,000    8,000    5,000        3,000
Multi-story*        U            U        20,000          8,000       8,000      8,000     6,000    4,000        NP   

            NP        Not permitted
            U            Unlimited
            *            The maximum floor area of a multi-story building shall be determined by multiplying the basic floor area specified herein by the "Story-factor"
                        obtained below.  However, in no case shall the floor are of any individual story in a multi-story building exceed such basic floor area.

                        Height of Building in Stories                Story-Factor
                                 2                                                        2.00
                                 3                                                        2.70
                                 4                                                        3.40
                                 5                                                        4.00
                                 6                                                        4.50
                                 7                                                        4.90
                                 8                                                        5.20
                                 9                                                        5.50
                                10                                                        5.80
                                11                                                        6.10
                                12                                                        6.40
                                13                                                add .25 for each additional story

8.2  FIRE-RESISTIVE CONSTRUCTION REQUIREMENTS
        Single-Family Dwellings (Class A1)


8.2-2  MULTIPLE-FAMILY DWELLINGS (CLASS A2) 
a.    Attached Auto Storage
A carport open on two (2) or more sides need not have a fire separation between the carport and the dwelling.  See requirements  for private garages, Article XVII, Section 17.2-4.
b.  Exception to Enclosure of Stairs
In Multiple-Family Dwellings, stairs contained completely within one dwelling unit need not be enclosed.
c.  Protection of Openings in Enclosures
In Residential Buildings not exceeding three (3) stories in height, openings in the enclosures of stairways serving not more than four (4)  dwelling units on any floor may be protected with doors not less fire-resistant than solid wood doors one and three-quarter (1-3/4) inches thick.
d.  Flammable Liquid Storage
(1)  The storage of flammable liquids, other than fuel oil, shall be prohibited, except that which is required for maintenance or equipment operation which shall not exceed 10 gallons.  In buildings having more than three (3) dwelling units, a larger amount may be stored, but it must be kept in a flammable liquid storage room (see Section 16.2) not having a door that opens into that portion of the building used by the public.
(2)  Doors leading into rooms in which volatile flammable liquids are stored or used shall be protected by a self-closing fire assembly having a one hour rating labeled on each side with a sign in one inch or larger block letters:  "FIRE DOOR, KEEP CLOSED."
e.  Exception to Enclosure of  Heating Plants
Heating plants and boilers in buildings serving not more than two (2) dwelling units may omit fire-resistive enclosures.
f.  Interior Finish
Flame spread ratings for interior finish shall be governed by the class of finish allowed, as indicated below.

Allowable Class of Interior Finish
Required Exitways,
Including Stair    Enclosures,            Corridors, Not        Rooms 1500            Rooms Larger
Corridors and                                Part of Required        Sq.-ft. and Less        than 1500 sq. ft. in.
Passageways                                Exitways                    In Floor Area            Floor Area
    1*                                                2*                            3                                3

*In exitways from the upper story of Two-Family Dwellings, interior finish shall be no more hazardous than Class 3.

g.  Separation of Dwelling  Unit
In Multiple-Family Dwellings, dwelling units shall be separated from each other and fro hallways and other occupancies by partitions and floor and ceiling assemblies having a fire resistance rating of not less than one hour, except in row houses only the walls and partitions separating each two (2) family sections are required to haw a fire resistance  rating of not less than one hour.  Openings shall be equipped with flush type solid wood core doors, one and three-quarter (1-3/4) inch nominal thickness or the equivalent.  Frames shall be of solid wood, one and three-quarter (1-3/4) inches thick, rabbeted, or of metal not less than No. 16 U.S. gauge. 
h.  Fire Walls
Fire walls in Class A2 (Multiple Family Dwellings) buildings shall provide two (2) hour fire resistance for construction types I and II, and three (3) hour fire resistance for buildings of construction types III, IV, and V
i.  Existing Buildings
(1)  Purpose
The purpose of this Section is to provide a reasonable degree of safety to persons living and sleeping in existing apartment houses and hotels by providing for alterations to such existing buildings as do not conform with the minimum safety requirements of this ordinance
(2)  Scope
The provisions of this Section shall apply exclusively to existing non-conforming Class A2 occupancies more than two (2) stories in height.
(3)  Enclosure of Vertical Openings
Elevator shafts, ducts, stairwells, and other vertical openings shall be enclosed.
(4)  Stairway Construction
Interior stairs shall be incombustible or of wood not less than two () inch nominal thickness, with solid treads and risers, and with walls of not less than one hour fire-resistive construction, or of wired glass in metal frame enclosures.  Door openings in such enclosures shall be protected by a self-closing solid core one and three-quarter (1-3/4) inch or thicker wood door or equivalent.  Enclosures shall include landings between flights and any corridors, passageways or public rooms necessary for continuous exit to the exterior of that building.  Enclosures shall not be required if an automatic fire extinguishing system is provided for all portions of the building except bedrooms, apartments, and all rooms accessory thereto.
(5)  Separation of Occupancies
Occupancy separations shall be provided as specified in Article XVIII, Section 18.2
(6)  Enclosures of Central Fuel Burning Device Rooms
Rooms containing a central heating plant shall be separated from the rest of the building by one hour fire-resistive construction having only essential openings, each of which is protected by a self-closing one hour Class B fire door.

8.2-3  Porches
Porches constructed of combustible materials shall be permitted when attached to Residential Buildings of Types IVA, IVB, VA and VB construction, with the following limitations:

a.  Porches shall not exceed three (3) stories in height
b.  Porches shall not project more than 10 feet from the building nor exceed 150 square feet in area per dwelling unit.
c.  Porches shall e located not closer than six (6) feet to an interior lot line
d.  Porches of combustible construction shall not be permitted in the Conflagration Hazard District.

8.3  FIRE PREVENTION AND PROTECTION REQUIREMENTS

8.3-1  Single-Family Dwellings (Class A-1)

8.3-2  Multiple-Family Dwellings (Class A2)

a.  Obstruction of Exits
No obstruction shall be permitted in hallways of Multiple-Family Dwellings
b.  Standard Fire Alarm Systems
(1)  A Class I standard fire alarm system shall be provided in all hotels and motels more than two (2) stories in height.
(2)  In buildings used in part as a hotel, or motel, more than two (2) stories in height, detectors shall be provided in such portions of the building other than hotel or motel unless separated by a fire separation wall as specified in Article XVIII, BUILDINGS OF MIXED OCCUPANCY.
c.  Standard  Fire Extinguishers
Standard fire extinguishers shall not be required in Multiple-Family dwellings not exceeding two (2) stories in height or having a floor area not exceeding 2,500 square feet.
d.  Automatic Sprinkler Systems
(1)  Installation
The installation of required automatic sprinklers shall conform to the applicable provisions of NFPA No. 13.
(2)  Plastic Light-Diffusing Ceilings
The following table establishes the clearances which shall be provided between the sprinkler deflectors and the upper surface of an open grid ceiling in which the openings are one-quarter (1/4) inch or larger, and where the thickness of the material does not exceed the least dimension of the openings, and where the grid is at least 70 percent open.

        Spacing of Sprinklers                        Minimum Clearance
        Not more than 10 ft. x 10 ft.                      18 inches
        10 ft. x 10 ft. to 10 ft. x 12 ft.                    24 inches
        10 ft. x 12 ft. or more                                48 inches

(3)  Existing Buildings
An automatic sprinkler system shall be installed in every existing Multiple-Family Dwelling more than two (2) stores in height and of construction types II or V.

e.  Smoke Detectors
(1)  All Buildings of residential occupancy having two or more residential units, shall be equipped with approved Smoke Detectors in the manner prescribed in this section.
(2)  Not less than one approved Smoke Detector shall be installed in every Multiple Dwelling Unit as defined in Article 3.2 (Class A-2).  The detector shall be installed on the ceiling and at least (6) inches from any wall or on a wall, located from (6) to (12) inches from the ceiling and within (15) feet of all rooms used for sleeping purposes, with not less than one Detector per living level.
(3)  All Multiple Dwellings as defined in Article 3.2 Class A-2 having two or more Residential Units, shall contain not less than one approved Smoke Detector at the uppermost ceiling of all interior stairwells.  All  approved Smoke Detectors herein required shall be installed on the ceiling  of all interior stairwells.  All approved Smoke Detectors herein required shall be installed on the ceiling, at least (6) inches from the wall or on a wall located from (6) to (12) inches from the ceiling.
(4)  All approved Smoke Detectors required in this chapter shall be the ionization or photoelectric type, either battery powered or 110 volt A.C. and shall comply with all the requirements of the Underwriters Laboratories Inc. Standard UL 217 (Standard for Safety -- Single and Multiple Station Smoke Detectors 1976), and Chapter 27 (14-8), General standards of Electrical Installation and Chapter 27 (14-28), Electric Equipment a nationally recognized standards testing laboratory that indicates that the smoke detectors have been tested and listed under the requirements of UL 217 (1976).

f.  Smoke Detectors in Existing Residential Buildings
(1)  All existing Multiple Dwellings as defined in Article 3.2 Class A-2 having any residential units, that are two or more stories in height and contain two or more dwelling units, shall be equipped with approved Smoke Detectors in accordance with the provisions of Article 8.3-2f(2) to and including 8.3-2f(5).
(2)  Every owner, manager or agent of any building as described in Article 8.3-2f(1), shall install, in every dwelling unit, not less than one approved Smoke Detector on the ceiling, not less than (6) inches from any wall, or on a wall, located from (6) to (12) inches from the ceiling, and within (15) feet of all rooms used for sleeping purposes.
(3)  Every owner, manager or agent of any building as described in Article 8.3-2f(1) shall install not less than one approved Smoke Detector on the uppermost ceiling not less than (6) inches from any wall, or on a wall, located from (6) to (12) inches from the uppermost ceiling of all interior stairwells.
(4)  All approved Smoke Detectors required in this chapter shall be the ionization or photoelectric type, either battery powered or 110 volt A.C. and shall comply with all the requirements of the Underwriters Laboratories Inc., standard UL 217 (Standard for Safety -- Single and Multiple Station  Smoke Detectors (1976) and Chapter 27 (14-8), General Standards of Electrical Installation, and Chapter 27 (14-28), Electric Equipment for Special Uses of the Municipal Code of Chicago.  Smoke Detectors shall bear the label of a nationally recognized standards testing laboratory that indicates that the smoke Detectors have been tested and listed under requirements of UL 217 (1976).

8.4  EXIT REQUIREMENTS
8.4-1  Occupancy Content
a.  For the purposes of determining required exits, the number of persons accommodated within any floor area or the occupancy content of Residential Buildings shall be based upon the actual maximum number of occupants, but in no case shall the occupancy content be assumed to be less than one person per 125 square feet of gross floor area.  Exit facilities shall be provided for the determined design occupancy content of any floor area of portions of the floor area served by the exit facility.

b.  The floor area of any open mezzanine or balcony shall be added to the floor area of the floor below for the purpose of determining exit capacity.
8.4-2  Minimum Number of Exits
a.  Every habitable room or enclosed floor space of a Residential Building, other than Single-Family and Two-Family Dwellings, shall provide not less than two (2) doorways or independent exits, located remote from each other, when the room or space is occupied by 50 persons or more or when exceeding 1200 square feet in area.
b.  All basements used for other than service of the building shall have not less than two (2) independent exitways, except when serving only a single-family dwelling unit.
c.  Every floor of Residential Buildings, other than Single-Family and Two-Family dwelling, shall provide not less than two (2) independent exits, except that in the following cases there may be access to only one exit enclosed by construction affording not less than one hour fire resistance.  One exit shall be permitted in Residential Buildings other than  hotels, lodging houses, and other Residential Buildings accommodating transients, provided:
(1)  No floor area is larger than 3200 square feet;
(2)  Such area is separated from other portions of the building by fire walls or by unpierced partitions of incombustible construction providing fire resistance of not less than one hour;
(3)  The height of such building does not exceed two (2) stories;
(4)  The maximum distance of travel to reach an exit from the entrance door of any living unit does not exceed 20 feet;
(5)  The doorways between apartments and exitways are equipped with Class C fire doors;
(6)  The interior construction of the building is not less than one hour fire resistance;
(7)  The interior finish in the stairways if of Class I material and the interior finish, used elsewhere is of Class 1 or Class 2 materials; and
(8)  Stairs are of incombustible materials
d.  Earth Sheltered Dwellings
(1)  Every sleeping room shall have at least one operable window, skylight or door leading to the exterior approved for emergency egress or rescue.  The units must be operable from the inside opening without the use of separate tools.  Bars, grills, or screens placed over emergency escape windows, skylights, or doors leading to the exterior shall be placed over emergency escape windows, skylights or doors leading to the exterior shall be releasable or removable from the inside without the use of a key, tool or excessive force.
(2)  Where the sleeping room is provided with a door to a corridor having access to two remote exits in opposite directions, then a window, skylight, or door leading to the exterior approved for emergency egress or rescue for each such sleeping room is not required.

8.4-3  Maximum Travel Distance to Exits
a.  Exits in Residential Buildings shall be so located that the distance from an exit to the most remote point in the story or floor area served by it, measured along  the line of travel, shall not exceed 100 feet.
b.  When a floor of a Residential Building is subdivided and contains a public corridor enclosed by walls providing fire resistance of not less than one hour, travel distance may be measured from a door leading from a room or space to such corridor.  In no event, however, shall the travel distance from the most remote point in a floor exceed 150 feet. 
c.  The travel distance to an exit from the dead end of a corridor shall not exceed 50 feet.

8.4-4  Capacity of Exits
a.  Unit of Exit Width
(1)  The unit of exit width, used to measure exit capacity, shall be 22 inches, 12 inches, clear width, added to one or more units shall be counted as an additional one-half (1/2) unit.  The addition of less than 12 inches to a unit of exit width shall not be considered as increasing its exit capacity.
(2)  Units of exit width shall be calculated according to the clear unobstructed with of the exitway, except that in doorways, jambs and doors when open may project into the required width two (2) inches maximum for each 22 inch exit unit, and except that in stairways handrails may project not more than three and one-half (3-1/2) inches into the required width at each side.
(3)  For minimum allowable widths of exit stairways and doorways, see Section 22.5 and 22.6 of Article XXII, EXIT REQUIREMENTS.
b.  Occupants per Unit Exit Width
The capacity of exits shall be computed on the following bases;
(1)  Stairways, Ramps and Moving Stairs -- 30 persons per unit width.
(2)  Doorways, Horizontal Exits, Exit Corridors and Passageways -- 40 persons per unit width.
(3)  Street or Ground Floor Exits -- In addition to the doorways required to sere the exit stairways, ramps, moving stairs, and elevators from the stories above, doorways to the street shall be provided of sufficient width to serve the ground floor occupants; the capacity of the latter doorways shall be computed as 100 persons per unit exit width.
c.  Multiple Use of Stairways and Related Exitways.
The aggregate total of units of exit width for stairways and related exitways, shall be no less than the requirements for the greatest single floor occupancy content of any floor  above the stairway at any point.  However, in no case shall any individual stairway or related exitway be less than the requirements of Article XXII.

8.4-5  Stairway Class Required
All new Residential Buildings shall be provided with Class A or Class B stairways, except that all new Residential Buildings or Structures with a total occupancy content of over 1000 or Buildings more than 60 feet or 5 stories high shall be provided with Class A Stairways.  Such stairways shall comply with the applicable requirements of Section 22.5-3 of Article XXII.

8.4-6  Revolving Doors
Where revolving doors are used, there shall be provided, adjacent to each revolving door, swinging doors of equivalent width, and the revolving doors shall be of an approved type which will collapse under pressure.  See Section 22.6-4 of Article XXII for other requirements for revolving doors.

8.4-7  Minimum Doorway Width
In Single-Family Dwellings (Class A1), all doors providing means of exit shall be not less than 24 inches wide.

8.5  LIGHT AND MINIMUM PLANNING REQUIREMENTS
8.5-1  Artificial Light
In Class A buildings, artificial light shall be provided in all rooms and spaces which may be occupied by a person or persons, except "non-walk-in" type closets.  In lieu of floor area shall be acceptable.
8.5-2  Lighting of Habitable Rooms
Every habitable room shall be provided with natural light by engineering design or the floor area ratio method.
8.5-3  Minimum Sizes and Arrangements of Habitable Rooms
a.  Minimum Area
Habitable rooms other than kitchens shall be not less than seven (7) feet wide in at least 90 percent of the area of the room and shall contain not less than 80 square feet of gross floor area.
b.  Minimum Living Room Size
At least one room in every dwelling unit shall have a gross floor area of not less than 150 square feet.   Rooms used for combined living and dining purposes shall have a gross floor area of not less than 180 square  feet, and not less than 220 square feet if also used for cooking purposes.
c.  Minimum Kitchen Size
When kitchens serving dwelling units are completely enclosed, the gross floor area shall be not less than 90 square feet when dining space is included, and 60 square feet where no dining space is included, except that in dwelling units having no bedrooms, the gross floor area of the kitchen shall be not less than 50 square feet.  Kitchens not completely enclosed shall be considered as alcoves  unless separately lighted and ventilated.
d.  Height
(1)  Habitable rooms shall have a clear height of not less than seven (7) feet six (6) inches, provided that rooms with sloping ceilings shall have a clear height of seven (7) feet six (6) inches in at least three-quarter (3/4) of their area.  In computing the area of rooms for the purpose of providing minimum room sizes, all areas having a ceiling height less than five (5) feet shall be disregarded.
(2)  Exposed beam construction shall be measured from the floor to the underside of the ceiling.  Beam bottoms on flat ceilings  shall not be lower than seven (7) feet.
(3)  Drop ceilings not exceeding 20 percent of the room area, will be allowed.  They shall be not lower than seven (7) feet in any portion of a room where a person can stand.
(4)  The thickness of finish materials less than one inch thick may be neglected in measuring room heights.
e.  Relation to Grade
Habitable rooms shall be permitted in a basement only when the floor is not more than two (2) feet below finished grade level at all exteriors walls containing openings required for natural light and ventilation, except that basement recreation or family rooms, where a separate living room is provided elsewhere in the dwelling, may have their floor level more than four (4) feet below finished grade level.

8.5-4  Access
a.  Access to Rooms
In each dwelling unit, there shall be access from each bedroom to a bathroom without passing through another bedroom or a kitchen.  Access to every habitable room in a dwelling unit shall be provided without having to pass through a bedroom or bathroom.  In each dwelling unit, one bedroom, and when more than one bedroom is provided, at least two (2) bedrooms shall have access to a bathroom without passing through another habitable room.  No bathroom shall open directly into a kitchen, living room or dining room.
b.  Access to Dwelling Units
In a Multiple-Family Dwelling there shall be access to every dwelling unit without passing through any part of any other dwelling unit.

8.6  PLASTIC - PERMITTED USE
Terrace and patio roof coverings on Residential Buildings may be of plastic.  Plastic shall be permitted as a substitute for glass in shower stalls and doors, bath tub enclosures, and similar  uses in a Residential Building, without regard o interior finish limitations.

8.7  HEATING, MECHANICAL VENTILATING AND REFRIGERATION REQUIREMENTS
8.7-1  Mechanical Ventilation
The method of producing ventilation and the quantity of air to be supplied to and exhausted from rooms peculiar to residential Buildings, by mechanical ventilating systems, shall be as specified in Table 8.7-1 below.

Table 8.7-1

            Room Use                                                Requirement
            Bathroom                                                N.V. or E 1.5
            Bedroom                                                N.V.
            Den                                                        N.V.
            Dining Room                                            N.V.
            Dressing Room                                        N.R.
            Family Room                                            N.V.
            Foyer, Hotel or Motel                            N.V. or S 1.0
            Garage (for more than two cars)*            1.0 sq. ft. R.O. for each vehicle
            Garage (Two cars or less)                        N.R.
            Kitchen                                                    N.V. or E 1.5
            Library                                                    N.V.
                    Living Quarters                                           N.V.
                    Living Room                                            N.V.
                    Laundry, Single Family                            N.R.
                    Laundry (two or more families)                N.V. or E 1.5
                    Pantry                                                        N.V. or E 1.0
                    Shower Room                                            E 1.0
                    Solarium                                                    N.V. or E 1.0
                    Total Room                                                N.V. or E 1.5

N.V.        Natural Ventilation
N.R.        No Requirement
S            Mechanical supply, in cfm per square foot area
E            Mechanical exhaust, in cfm per square foot area
R.O.        Relief Opening
cfm        cubic feet per minute of air
*            Enclosed passages for vehicles shall have openings in both end walls, each opening having an area not less than 25 percent of the cross-sectional area of the passage; or shall have openings in the side walls, uniformly distributed and having a total area of not less than 50 percent of the side wall.  If a storage garage cannot be equipped with effective relief openings, it shall be equipped with a mechanical ventilating supply and exhaust system that will function so that the amount of carbon monoxide in the air in the garage and in the passageways shall not exceed a concentration of one part in 10,000 parts of air.

8.7-2  Maximum Air Velocities
Air velocities in the various parts of a mechanical ventilating system shall not exceed those shown in the Guide and Data Book of the American Society of Heating, Refrigerating and Air  Conditioning Engineers.
8.7-3  Combustion Air
Combustion air for gas-fired and oil-fired devices in Residential Buildings shall be provided in accordance with the applicable requirements of NFPA No. 54 and No. 31, respectively.  No special provision need be made to provide combustion air for coal-fired devices in single-family dwellings when such devices are located in a space having operable window sash.
8.7-4  Refrigeration
a.  Allowable Refrigerant
No refrigeration system in a Multiple-Family dwelling shall contain over 100 pounds of a Class 1, 2 or 3 non-flammable, non-irritant refrigerant.  All other refrigerants listed in the refrigerant classification section (35.28) are prohibited in Multiple-Family Dwellings.
b.  Evaporators - Direct Systems
Where evaporators are located in rooms used for sleeping purposes or in ducts leading thereto, direct refrigerating systems for air conditioning  shall be limited to 100 pounds of a non-irritant, non-flammable refrigerant; provided, however, that the total refrigerant content of the system shall not exceed limitations listed in Table 35.30-9 of Article XXXV, in total space to be cooled.  The evaporators of such systems shall be subject to the provisions specified in sections 35.29 and 35.30.
c.  Location of Evaporators
No evaporator shall be placed in a room having adjoining rooms, the combined cubical contents of which has less than 4,000 cubic feet and an part of which is used for sleeping purposes, unless such rooms are provided with a window or windows the total openable area of which is not less than five (5) percent of the floor area of such rooms.
d.  Location of Shut-off Valves
Shut-off valves for Multiple-family Dwelling systems shall be installed  at the following locations:
(1)  In each branch liquid and suction line at or near compressor.
(2)  At the bottom of each riser or manifold connection of any riser or any branch connecting manifold extending over 40 feet in length.
(3)  At each service outlet in liquid and suction lines.
These valves shall be fitted with a hand wheel as a means of ready operation, and shall be located outside of the refrigerating unit and at such distance above the floors as will provide ready accessibility.  Such valves, where located in living quarters, shall be placed in a metal box or other suitable enclosure and shall be rigidly attached thereto or to the supports thereof.  Every such outlet box shall have an accessible door or removable cover.
e.  Outlet Box Limitations
Not more than one refrigerator shall be connected to one outlet box in Multiple-Family Dwellings.  Every such outlet box shall be located within the premises containing the refrigerator and not within the refrigerated space.  No such outlet box shall be located in any hallway, stairway or vertical shaft.
f.  Window Model Units
Class E window model air-conditioning units in Single-Family Dwellings (Class AI) must be securely attached to the building, but need not have their center of gravity inside the building.
g.  Service Valves
Service valves shall be installed in both connections to every Multiple-Family Dwelling system evaporator, and shall be of the flooded type that can be removed from the refrigerator as a unit in such manner as to permit the removal of the evaporator with valve attached.
h.  Protection of Evaporators
Every evaporator in a Multiple-Family Dwelling system, unless constructed of material of sufficient strength to prevent injury in the ordinary and customary use thereof, shall be protected by as suitable shield to assure protection against such injury.  Every evaporator shall be firmly anchored or secured in such a manner as to make it rigid.
i.  Anchoring
Every refrigerator cabinet, box or refrigerated space of a Multiple-Family Dwelling system containing any evaporator, using the directed system of refrigeration, shall be firmly and securely anchored and fixed to a wall, floor or other fixed object in such manner as to hold such refrigerator box or casing securely in place.
j.  Location of Units
Compressors, condensers and shell type apparatus of Multiple-Family dwelling systems shall be located in a machinery room provided with natural or mechanical ventilation or in an accessible part of the basement not used for habitation, workshop or laundry purposes; provided, however that where compressors are not located in a machinery room they shall be  protected by the use of heavy wire netting secured to metal posts or two (2) by four (4) wood studding and shall not be located under stairways or near dumbwaiters or elevator shafts.  No refrigeration unit shall be placed in a boiler room.

8.8  PLUMBING REQUIREMENTS
8.8-1  Location
In Multiple-Family Dwellings (Class A2) toilet room facilities shall be provided on every floor having sleeping accommodations.
8.8-2  Separate Facilities
Bathrooms and toilet rooms serving more than two (2) sleeping rooms in hotels, dormitories, or similar usages, where both sexes are accommodated, shall provide separate toilet facilities.
8.8-3  Fixture Requirements
a.  Every dwelling unit or apartment (permanent or semi-permanent) shall contain at least one water closet, one lavatory, one bathtub or shower and a kitchen sink-laundry try or connection for an automatic washer; and every apartment building or multiple dwelling building shall be equipped with at least one double compartment laundry tray; a connection for an automatic washer, for each ten (10) units
8.8-4  Downspouts when not connected to a storm sewer or a combined storm-sanitary sewer, may either (1) spill onto a lawn which is well graded away from the
         building, or (2) be connected to a dry-well.
8.8-5  Footing Drains
a.  Footing drains shall be connected to sump pumps and the discharge therefrom shall be made into storm sewers, existing combined sewers, drainage ditches or engineer and well-defined drainage swales.  No footing drains or drainage tile shall be connected directly or indirectly to the sanitary sewer.  No building permit application will be accepted nor any permits issued for construction of any structure unless the plans and specifications thereof  provide for discharge of water from footing drains and drainage tile as called for in this Ordinance.
b.  In the event that discharges are presently made from any footing drains, drainage tile or any other drainage system in such a manner as to reach directly or indirectly into a  sanitary sewer, such discharges are deemed non-conforming with the provisions of this ordinance and are  hereby declared illegal.  Necessary measures shall betaken promptly for the elimination of any such discharges of storm waters into the sanitary sewers and for the  disconnection of any footing drains, drainage tile or any other tile intended for the conveyance of storm waters.
c.  Sump pumps installed to receive and discharge ground  waters or other storm waters shall discharge into storm sewers, drainage ditches or other engineered ditches or other engineered and well-defined drainage swales.  Sump pumps installed to receive and discharge floor drain flow or other sanitary sewage shall be connected to the sanitary sewer.  A sump pump shall be used for one function only, either the discharge of storm waters or the discharge of sanitary sewage.  A check valve shall be provided in sump discharge.
d.  Sumps other than those receiving clear water waste shall be gas tight and vented
e.  All sumps shall have their covers firmly anchored.
8.8-6  A two (2 inch, grinder-type bilge  pump shall be allowed to serve a maximum of 14 fixture units, including water closet discharge, and shall conform to the
         requirements of Section 36.11-7, except paragraphs e and f.; a two (2) inch vent shall be installed from the sump.
8.8-7  Septic Tanks
a.  Septic tanks serving Single-Family Dwellings shall have a minimum  capacity in accordance with the provisions of Table 8.8-7A.

   TABLE 8.8-7A
MINIMUM CAPACITIES FOR SEPTIC TANKS SERVING AN INDIVIDUAL DWELLING

            Number of Bedrooms        Maximum Number of Persons Served        Nominal Liquid Capacity of Tank
                                                                Persons                                                    Gallons
                2 or less                                    4                                                                750
                3                                                6                                                                1000
                4                                                8                                                                1200
                5                                                10                                                               1400
                 6                                                12                                                            1600
                7                                                14                                                               1800
                8                                                16                                                            2000

b.  Where domestic garbage disposal units are installed or contemplated, the capacity of the septic tank shall be at least 50 percent greater than indicated in Table 8.8-7A
c.  The absorption areas for residences shall  be determined from Table 8.8-7B


TABLE 8.8-7B
MINIMUM AREA OF SEEPAGE TRENCH FOR RESIDENCES
(Square Feet of Trench)

Seepage Rate in
Minutes per Inch        3 Bedrooms or less            4 Bedrooms        Each Additional Bedroom
15 or less                        690                                    860                    140
16 to 20                        760                                    950                    150
21 to 25                            830                                1040                    160
26 to 30                        900                                    1125                    170
31 to 35                        970                                    1210                    180
36 to 40                        1040                                    1300                190
41 to 45                        1110                                    1390                200
46 to 50                        1180                                    1475                210
51 to 55                        1250                                      1560                220
56 to 60                        1320                                    1650                230
*Consult with County Department of Public Health for system to bed used

8.8-8  Water Supply Control
In Two-Family Multiple-Family Dwellings, the water supply for each family unit shall be controlled by an arrangement of shut-off valves, which will permit the individual fixtures, or each group of fixtures, to be shut off without interference with the water supply to any other family unit or portion of the building.  A group of fixtures means two (2) or more fixtures adjacent to, or near, each other.

8.8-9  Individual Water Supply
In Residential Buildings a water supply pressure tank shall have a minimum storage capacity of 42 gallons per dwelling unit.
8.8-10  Non-Potable Water Supply Prohibited
A non-potable water supply is expressly prohibited in Residential Buildings.
8.8-11  Individual Plumbing Stacks
In all attached single family dwelling units, where each individual family occupies the total height of each unit, separate plumbing stacks shall be provided for each unit, regardless of the location of the plumbing fixtures in each unit.

8.9  ELECTRICAL REQUIREMENTS
8.9-1  Applies to all single and multiple-family residential occupancies.
a.  Voltage
(1)  In dwelling occupancies the voltage between conductors supplying lamp holders of the screw shell type, receptacles or appliances, shall not exceed 150 volts except that between conductors supplying only permanently connected appliances or portable appliances of more than 1,380 watts may exceed 150 volts.  Any portable appliance which operates at a voltage in excess of 150 and not more than 240 shall be served from a receptacle wired to carry the load of the appliance and properly grounded.
(2)  Lighting equipment having an open-circuit voltage of more than 1,000 volts shall not be installed in Residential Buildings.
(3)  Lighting equipment having an open-circuit voltage of more than 300 volts shall not be installed in Residential Buildings unless such equipment is so designed that there shall be no exposed live parts when lamps are being inserted, are in place or are being removed.
b.  Appliances
(1)  Disconnection of Portable Appliances
For electric ranges and clothes dryers, a separable connector or an attachment plug and receptacle may serve as the disconnecting means.
(2)  Unit Switches as Appliance Disconnecting means: 
Switches which are a part of an appliance shall not be considered as taking the disconnection, as follows:
(a)  Single-Family Dwellings
In Single-Family dwellings, the service disconnecting means may be used
(b)  Two-Family Dwellings
In Two-Family Dwellings, the disconnecting means may be outside of the  apartment in which the appliance is installed.  This will permit an individual switch for the apartment to be used.
(c)  Multiple-Family dwellings
In Multiple-Family dwellings, the disconnecting means shall be within the apartment or on the same floor as the apartment in which the appliance is installed, and may control lamps and other appliances.
c.  Ranges
(1)  For household electric ranges, the branch circuit load may be computed in accordance with Table 8.9-4
(2)  The feeder load for household electric ranges and other cooking appliances, individually rated more than one and three-quarters (1-3/4) kw, may be calculated in accordance with Table 8.9-4.  Where a number of ranges are supplied by a three (3)-phase, four (4)-wire feeder, the current shall be computed on the basis of the demand of twice the maximum number of ranges connected between any two (2)-phase wires.  In order to provide for possible future installation of ranges of higher ratings, it is recommended that where ranges of less than eight and three-quarters (8-3/4) kw, ratings are to be installed, the feeder capacity be not less than the maximum demand value specified in Column A of Table 8.9-4.
(3)  See Note of Table 8.9-4.  Where the maximum demand of a range of eight and three-quarters (8-3/4) kw or more rating is computed according to Column A of the Table, the neutral conductor of a three (3)-wire branch circuit supplying a household electric range may be smaller  than the ungrounded conductors and shall not be smaller than No. 10.  Cable assemblies with the neutral conductor smaller than the ungrounded conductor shall be so marked.
(4)  For a feeder supplying household electric ranges, the maximum unbalanced load shall be considered to be 70 percent of the load on the ungrounded conductors as determined in accordance with Column A of Table 8.9-4.
(5)  The capacity of range receptacles may be based on single range loads as computed from Table 8.9-4.
d.  Receptacle Requirements
(1)  In every kitchen, utility room dining room, breakfast room, living room, parlor,  library, den, sun room, recreation room and bedroom, one receptacle outlet shall be provided for every 12 linear feet or major fraction thereof of the total (gross) distance around the room as measured horizontally along the wall at the floor line.  The receptacle outlets shall, insofar as practicable, be spaced equal distances apart.  There shall be at least one receptacle between doors three (3) feet or more apart.  At least one receptacle outlet shall be installed for the connection of laundry appliances.
(2)  All receptacles installed in residential type occupancies or structures auxiliary to residential occupancies (e.g. garages, patios, terraces) shall be of the groundable type.
(3)  Receptacle outlets in the floor shall not be counted as part of the required number of receptacle, outlets unless located  close to the wall.
(4)  For the small appliance load in kitchen, laundry, utility room, pantry, dining room and breakfast room of dwelling occupancies, one or more branch circuits shall be provided for all receptacle outlets (other than outlets for clocks) in these rooms and such circuits shall no other outlets.  The conductors of such circuits shall be not smaller than No. 12, and the ratings of the circuit over-current protective device shall be 20 amperes.
e.  Permissible Loads
50-ampere branch circuits having two (2) or more outlets may supply only fixed cooking appliances, or fixed range and water heater.

8.9-2  Single-Family Dwellings
Includes single-family apartments as part of a multiple-family dwelling when such apartments are provided with cooking facilities
a.  Branch Circuits
(1)  Each single-family dwelling and each apartment shall be provided with at least one general lighting branch circuit for each 500 square feet of area of the normal living quarters.  A branch lighting circuit shall not be used to supply more than one apartment.  A fixed lighting fixture of approved type shall be installed over each laundry tub, sink and lavatory and such light shall be additional to the general lights in laundries and kitchens.  The circuit capacity in a single-family dwelling shall be estimated at three (3) watts per square foot for the usual living part of the dwelling.  This area does not include unfinished attics or unfinished basements.  Any space in basement or attic finished for living use is calculated at three (3) watts per square foot.  Other lighting, as in unfinished basements or attics, garages, outside lights on porches or for any other purpose than as actual living quarters, shall be on a basis of 0 watts each.  It may be possible that additional circuits may be required to supply such lighting.
(2)  Ranges for ordinary domestic use shall be supplied by  circuits of not less than eight (8) kilowatts capacity each and installed by an approved wiring method.
(3)  New circuits, or extensions to portions of the building not previously wired or additions to the building shall conform to paragraph (1)) above
b.  Receptacle Requirements
(1)  In living rooms, sun parlors, living porches, bedrooms and parlors, duplex receptacle outlets shall be provided for each twelve lineal feet or fraction thereof, of the total distance around each room as measured horizontally along the wall at the floor line including all openings.  These receptacles shall be on the general lighting circuits.  A receptacle outlet shall be provided for any  space of three (3) feet or more between doors or openings.  The appliance circuit shall supply all the receptacle outlets in the kitchen, dining room and breakfast room, together with the required outlets in the laundry and pantry in each occupancy.  All receptacles installed in residential type occupancies or structures auxiliary to residential occupancies (i.e. garages, patios, terraces, etc.) shall be of the groundable type.  At least one receptacle shall be installed in each bathroom or powder room and it shall be of the groundable type.  A general lighting circuit or any circuit other than the appliance circuit shall supply all of the receptacle outlets in the living room, parlor, library, den, sun room, recreation room and bedrooms of each occupancy. 
(2)  The installation of a combined switch and convenience outlet where the switch is used to control a ceiling fixture or side wall bracket, is not allowed to satisfy the receptacle device will not be interfered with.  Outlets for floor or table lamps, radios, etc., shall be close to the floor.  There is no objection to the use of combined switch and convenience outlet where the switch controls the convenience outlet such as in flat iron outlets, must of necessity be at a higher level, nor is there any objection for the control of receptacles by room switches.
c.  Feeder Computation
(1)  To estimate the size of service feeders and sub-feeders for apartment buildings, a combination of the following three factors shall be considered as the total watt load:
(a)  The apartment lighting the total floor area including partitions shall be estimated on a basis of three watts per square foot.  Should a special layout or design of the apartment lighting load in watts exceed that estimated on the basis of the three watts per square foot, then the special lighting or appliance load shall be estimated on the actual watt load to be served.
(b)  Feeder capacity for the appliance load shall be estimated as 1,500 watts per house or apartment as provided in  Section  8.9-2f(1) to which shall be added the watt load of any fixed appliance over 660 watts rating intended to be connected and used in the apartment.
(c)  The public hall and basement, storerooms, outside garage, or accessible attic; the watt load shall be estimated at 60 watts per outlet, except that for outlets to be used for fixed appliances, the watt load of such appliance shall be added.
(2)  The estimated maximum demand shall be the sum of the above three factors multiplied by a demand factor in the following table corresponding to the areas of the apartments served.
(3)  The feeder demand factor shall be as follows:

                        Portion of Lighting load to                                Feeder Demand
                        Which Demand Factor Applies                        Factor*

                        Up to 20,000 watts                                        100%
                        20,001 to 120,000 watts                                35%
                        120,001 and up                                            25%

*The given demand factors shall not apply to the computed load of sub-feeders to areas where the entire lighting system is likely to be used at one time.  The above demand factors are based on minimum load conditions and 100 percent power factor, and in specific instances may not provide sufficient capacity for the installation contemplated.  Each installation should be considered as to the load likely to be imposed and the capacity increased to insure safe operation.
(4)  In all occupancies covered by Section 8.9-2 those conductors which supply all the current consumed by an individual apartment or living unit shall be as  follows:
(a)  For apartments or units of 850 square feet or less a minimum of two (2) #6 RH and one #8 RH.  The switch or breaker cabinet fed by these conductors shall  have a 100 ampere minimum rating.
(b)  For apartments or units of 851 square feet or more a minimum of two (2) #2 RH and one #4 RH.  The switch or breaker cabinet fed by these conductors shall have a 100 ampere minimum rating.
(c)  If the branch circuit distribution cabinet is located in the apartment or unit, the meter disconnect shall be the full rating of the required conductors and shall comply with the provisions of Section 27 (14-16-535) of the Chicago Electrical Code
Service Requirements
(1)  Service entrance conductors, including underground services, shall have a current carrying capacity sufficient to carry the load as determined by  Section 27 (14-16-300) of the Chicago Electrical Code and in accordance with Tables 1 and 2 of Chapter 27 (14-68) of the Chicago Electrical Code.  They shall not be smaller than No. 8.  The neutral of the service entrance  conductors shall have a current capacity in conformity  with paragraph g of Section 27 (14-16-300) of the Chicago Electrical Code and shall be the same size as the ungrounded conductor when the ungrounded conductors are No. 8.
(2)  Where more than one circuit is required for lighting a service not smaller than two (2) No. 6's and one No. 8 with  a 60 ampere service switch shall be provided.
(3)  Residential occupancies of over 850 sq.-ft shall have a minimum of two No. 2's and one No. 4 service conductors.  The service switch or breaker cabinet shall have a minimum rating of 100 amperes.
(4)  Residential occupancies of 850 square feet or less shall have a minimum of two (2) #6's and one No. 8 service conductors.  The service switch cabinet shall have a minimum rating of 60 amperes; the service breaker cabinet shall have a minimum rating of 50 amperes.
(5)  Meters, high-impedance shunt circuits (such as potential coils of meters and control circuits of time switches), surge protective capacitors, lightning arresters and circuits for emergency lighting and for fire alarms as provided in Section 27 (14-16-680), of the Chicago Electrical Code, may be connected on the supply side of the disconnecting means.  The wiring method of such control circuits shall be one specified for service entrance conductors.
(6)  The service switch and over-current device shall be located in general on the rear wall or closely adjacent thereto.  The disconnecting means shall be manually operable.  It may consist of not more than six (6) switches or circuit breakers in a common enclosure or in a group of separate enclosures located in a readily accessible point nearest to the  entrance of the conductors and inside the building wall except as herein provided.  The disconnecting means shall be of a type approved for service equipment and for prevailing conditions.  Switches of 30, 60 and 100 amperes capacities shall be of the dead front type.  The  disconnecting means shall be located in the basement or first floor utility room or in an adjoining garage if a part of the main building structure.  Services switches shall not be located over laundry tubs.  Exception to the foregoing may be made for unusual conditions by special permission of the Building Commissioner.  For overhead services, the disconnecting means shall be so located that the length of the conductors shall be as short  as practicable.  To conform to this requirement, where possible the disconnecting means shall be located at that part of the building nearest to the source from which the service is taken.  In existing residential occupancies, exception may be under the following conditions:  where there is no basement or other available place accessible to all the  occupants, the disconnecting means may be located in an enclosed porch or other available weatherproof enclosure.  Where outdoor meters are installed the service switch and over-current device may be located in each apartment.
In a multiple-occupancy building, each occupant shall have access to his disconnecting means.  In a multi-occupancy building supplied by a service in conformity with paragraph b. of Section 27 (14-16-340) of the Chicago Electrical  Code, and having a common readily accessible space available, the disconnecting means may consist of not more than six (6) switches or circuit breakers which shall conform to the requirements of paragraph a. of this section.  The length of the service shall be as short as practicable.
(7)  A service switch shall have a rating not less than the load to be supplied determined in accordance with Section 27(14-16-300) of the Chicago Electrical Code and shall have  in all cases, except as noted below, a rating of not less than 60 amperes and the circuit breaker not less than 50 amperes.  Except by special permission, 30 ampere switches shall not be used for two (2) wire services supplying more than one 15 ampere branch circuit.
(8)  In general, the point of attachment of a service drop to a building shall be not less than 10 feet above the ground and shall be at at a height to permit a minimum clearance for service drop conductors of 10 feet above sidewalks and 18 feet above driveways, alleys, and public roads.  The attachment shall not be more than 30 feet above the ground.  Where the minimum 10 foot height cannot be provided at the building wall, provision shall be made to attain that or a greater height by means of a riser or by an equally effective mans.  Where it is necessary to erect a riser on a building to obtain clearance for the service outlet or for the wires between the pole and the building, the riser shall comply with the specifications of the electricity supply company.
(9)  Service conductors extending along the exterior of or entering buildings shall be rubber covered or thermoplastic covered in: (1) rigid metal conduit, (2) in approved service entrance cable in existing residential occupancies only and  installed to supply electric ranges, electric water heaters or electric clothes driers, or (3) in busways.  See Chapter 27(14-20-920) of the Chicago Electrical Code.
(10)  Where the current supply is separately metered as in apartment house installations, a switch and cutout shall be installed to control each such separately metered installation.  Where meters are installed outside, they shall be grouped and shall not exceed six (6) in number except for if more than six (6) meters are required in a group a service switch shall be installed to control the entire group.  Service conductors between the outside meter and to its respective service switch, unless brought into the building separately, may be brought in a single raceway if the number of conductors does not exceed nine (9) excluding a common neutral for the group.  At a point where this raceway enters the building a junction box shall be installed from which the several raceways may extend to the service switches.  The total length of the service conductors within the building shall not exceed five (5) feet in addition to the limitation of six (6) feet for the service entrance equipment.
e.  System and Equipment Grounding
See Sections 27(14-16-1500), 27 (14-16-1510) and 27(14-16-1530) of the Chicago Electrical Code.
(1)  For system or common grounding conductor resisting material.  
The conductor may be solid or stranded, insulated or bare.  Except in the case of bus bars the grounding conductor shall be without joint or splice throughout its length.  If the grounding conductor is not of copper, its electrical resistance per lineal foot shall not exceed and its tensile strength shall not be less than that of the allowable copper conductor for such a purpose.
(2)  For conductor enclosures and equipment
The grounding conductor for equipment and for conduit and other metal raceways or enclosures for conductors, may be a conductor of copper or other corrosion resistant material, stranded or solid, insulated or bare, a bus bar or rigid conduit, steel pipe or electrical metallic tubing, except that under conditions favorable to corrosion, a grounding conductor of copper or other corrosion resistant material shall be used.
(3)  Installation
All grounding conductors shall be installed in rigid metal conduit, electrical metallic tubing, flexible conduit or armored conductor which shall connect directly to the service disconnecting means enclosure and extend continuously to the grounding electrode to which it shall be securely connected by means of an approved clamp.  Flexible conduit and armored conductor may be used in existing buildings for grounding purposes only where this ground is concealed or a major portion of the ground is concealed.
(4)  Replacement ground
Flexible conduit and armored conductor when used for grounding purposes may be exposed only where approved service entrance cable is used for the service or when replacing a ground conductor where no other wiring is being installed.
(5)  Identifying tag
An approved non-ferrous metal tag shall be attached to the ground clamp, giving warning against its removal.
(6)  Conduit used as ground
Where rigid metallic conduit or steel pipe is used as a grounding conductor, the installation shall comply with the requirements of Section 27 (14-20-1140) of the Chicago Electrical Code; where electrical metallic tubing is used, the installation shall comply with the requirements of Section 27(14-20-1370) of the Chicago Electrical Code.
(7)  Attachment to water pipe ground
The point of attachment of the grounding conductor to the cold water pipe shall, in all cases, be as close as practicable to the source of water supply to the building and on the street side of the water meter if possible, otherwise a bonding jumper shall be installed around the water meter.
(8)  Soldered terminals and neutral wire ground
No soldered terminal connections may be employed either in service run or grounding conductor.  Where the current supply is alternating current, the covered neutral of the service entrance cable may be used to ground outside meter equipment and the frame of the electric range.
f.  Additional Requirements
(1)  All rooms to be wired.
In single family dwellings and apartments all the rooms shall be  wired including accessible attics, stair halls, closets, basement storerooms, utility rooms, pantries, garages and similar locations.
(2)  Closet lights
The requirement for lights in closets may be waived if the closet has an area of less than five square feet and if there is a closely adjacent fixed light so placed to illuminate the contents of the closet.  Wardrobe closets are not exempt from this provision.  Closet lights shall be permanently installed lighting fixtures.  Drop cords are not acceptable.
(3)  Low voltage wiring
Low voltage wiring for control or signaling or communication systems which is enclosed in building partitions, walls or in any way made inaccessible by building construction shall be encased in a raceway whenever they are so enclosed.  Such raceway will protect the conductors during construction and provide ready means for replacement of conductors after the building is completed.  These raceways need not terminate in a box or fitting as long as normal precautions are taken to protect the conductors against injury.

8.9-3   Hotels and Motels and Similar Occupancies
Applies to individual dwelling units without cooking facilities in multiple-dwelling unit buildings.
a.  Branch Circuits
(1)  Number of Circuits
The number of circuits shall be not less than that determined from the total computed load (see paragraphs (2) through (5) below) and the capacity of the circuits to be used, but in every case, the number shall be sufficient for the actual load to be served.  When the load is computed on a watts-per-square foot basis, the total load insofar as practical shall be evenly proportioned among the branch circuits according to their capacity.
(2)  General Lighting
In determining the lighting load on a watts-per-square-foot basis, a unit load of two (2) watts per square foot of the entire area shall be used.  The floor area shall be computed from the outside dimensions of the building, apartment, or area involved and the number of floors.
(3)  Halls, Corridors, Closets and Storage
A unit load of one-half (1/2) watt per square foot shall be used for halls, corridors, and closets and one-quarter (1/4) watt per square foot for storage space.
(4)  Other Loads
For lighting other than general illumination, and for appliances other than motors, a load of not less than the following shall be included for each outlet:
(a)  Outlets supplying specific appliances and other loads -- Ampere rating of appliance or load.  For motors, see Section 27(14-24-1200) and 27(14-24-1220) of the Chicago Electrical Code.
(b)  Outlets supplying heavy duty lampholders -- 5 Amperes
(c)  Other outlets -- 1.5 Amperes*
*This is applicable to outlets that are not intended for specific appliances, heavy duty lampholders or fixed lighting units.
(5)  Receptacles on Lighting Circuit
All receptacle outlets of 15 ampere or less rating in guest rooms of hotels and motels may be considered as outlets for general illumination and no additional  load need be included for such outlets.  The receptacle outlets in paragraph (4) above for which the allowance is not more than one and one-half (1-1/2) amperes per outlet may be included with the general lighting load and be subject to the feeder demand factor.
(6)  New Circuits for Existing Buildings
New circuits which are added to existing installations, or extensions to existing circuits, may be determined in accordance with paragraph (2), (3) and (4) above, except that portions of existing structures not previously wired, or additions to the building structure, either of which exceeds 500 square feet in area, shall be determined in accordance with paragraphs (2), (3) and (5) above.
b.  Feeder Demand Factor
(1)  The feeder demand factor shall be as follows:

                Portion  of Lighting Load to                        Feeder Demand
                Which Demand Factor Applies                    Factor*
                Up to 20,000 watts                                    50%
                20,2001 to 100,000 watts                          40%
                Over 100,001                                            30%

*The given demand factors shall not apply to the computed load of sub-feeders to areas where the entire lighting system is likely to be used at one time.
(2)  The above demand factors are based on minimum load conditions and 100 percent power factor, and in specific instances may not provide sufficient capacity for the installation contemplated.  Each installation should be considered as to the load likely to be imposed and the capacity increased to insure safe operation.
8.9-4  Demand Loads for Household Cooking Units

TABLE 8.9-4

            Maximum Demand (See Notes)                                            Demand Factors (See Note 4)
            Number of        Column A                                                        Column B                        Column C
                                    (not over 12 kw                                                (Less than 3-1/2            (3-1/2 kw to
                                                                                                            (Less than 3-1/2 kw      8-3/4 kw
            Appliances        Rating)                                                            Rating)                            Rating)
            1                        8 kw                                                                80%                            80%
            2                        11 kw                                                                75%                            65%
            3                        14 kw                                                                70%                            55%
            4                        17 kw                                                                66%                            50%
            5                        20 kw                                                                62%                            45%
            6                        21 kw                                                                59%                            43%
            7                        22 kw                                                                56%                            40%
            8                        23 kw                                                                53%                            36%
            9                        24 kw                                                                51%                            35%
            10                        25 kw                                                                49%                            34%
             11                    26 kw                                                                    47%                            32%
            12                    27 kw                                                                    45%                            32%
            13                    28 kw                                                                    43%                            32%
            14                    29 kw                                                                    41%                            32%
            15                    30 kw                                                                    40%                            32%
            16                    31 kw                                                                    39%                            28%
            17                    32 kw                                                                    38%                            28%
            18                    33 kw                                                                    37%                            28%
            19                    34 kw                                                                    36%                            28%
            20                    35 kw                                                                    35%                            28%
            21                    36 kw                                                                    34%                            26%
            22                    37 kw                                                                    33%                            26%
            23                    38 kw                                                                    32%                            26%
            24                    39 kw                                                                    31%                            26%
            25                    40 kw                                                                    30%                            26%
            26-30        15 kw plus 1 kw                                                            30%                            24%
            31-40        for each range                                                                30%                        22%
            41-50        25 kw plus 3/4                                                             30%                            20%
            51-60         kw for each                                                                30%                                18%
            61 & over    range                                                                        30%                            16%

NOTE:  Column A to be used in all cases except as otherwise permitted in Note 3 below
Note 1:  Over 12 kw to 21 kw Ranges.  For ranges individually rated more than 12 kw but not more than 21 kw, five percent shall be added to above maximum demand (Column A) for  each additional kw of rating or major fraction thereof by which the individual range rating exceeds 12 kw.
Note 2:  Over 21 kw Ranges.  Ranges individually  rated more than 21 kw are not considered as household electric ranges and the demand should be determined on the basis of rating and use.  Generally, the demand for commercial ranges should be based on the maximum nameplate rating.
Note 3:  Over one and three-quarters (1-3/4) kw to eight and three-quarters (8-3/4) kw.  In lieu of the method  provided in Column A,the load for ranges individually rated more than one and three-quarters (1-3/4) kw but not more than eight and three-quarters (8-3/4) kw may be considered as the sum of the nameplate ratings of all ranges, multiplied by the demand factors specified in Columns B or C for the given number of ranges.
Note 4:  Branch Circuit Load.  Branch circuit load for one range may be computed in accordance with the above table.

8.9-5  Exit Signs
All Multiple-Family dwellings, except apartment houses with less than eight (8) living units shall have exit signs conforming to the requirements with Section 22.14 of Article XXII, EXIT REQUIREMENTS
8.9-6  Emergency exit Lighting
Every apartment, hotel, hotel, and motel occupied by 20 or more persons, or more than two (2) floors in height shall have an emergency exit lighting system in conformance with Chapter 27(14-48-010) of the Chicago Electrical Code
8.9-7  Residential Private Garages
Residential private garages, whether attached or not to a residence shall comply with Section 17.10-3 of Article XVII UNCLASSIFIED BUILDINGS AND STRUCTURES

Note:   the following Articles do not pertain to residential or apartment buildings and owners of these buildings should refer to the complete Cook County Ordinances: