The following is adopted as Chapter C6 of this code:
"CHAPTER C6 CHICAGO-SPECIFIC REQUIREMENTS – COMMERCIAL
C601 SCOPE
C601.1 General.
The provisions of this appendix shall be applicable to commercial buildings.
C601.2 Implementation of certain requirements that exceed the requirements of the 2021 IECC and 2022 Illinois Energy Conservation Code.
The provisions of Sections C603 through C605 shall be applicable to permits applied for on and after January 1, 2023, in accordance with Section 14A-1-105.9 of the Chicago Construction Codes Administrative Provisions.
C602 RESERVED
C603 SOLAR-READY ROOFS
C603.1 Scope.
This section shall be applicable for new construction buildings and additions.
Exception: A new construction building or addition with a ground-level footprint of 7,500 square feet (697 m2) or less.
C603.2 General.
Solar-ready zones shall be provided on low-slope roofs of buildings with a building height of 60 feet (18.3 m) or less. Solar-ready zones shall comply with Sections C603.3 through C603.10.
Exceptions:
1. A building with a permanently installed, on-site renewable energy system.
2. A roof that will be shaded by existing structures or existing vegetation for more than 50 percent of daylight hours annually, as certified by a registered design professional based on calculations.
3. A roof where the incident solar radiation available is not feasible for a solar photovoltaic or solar thermal system, as certified by a registered design professional based on analysis.
4. A roof where a registered design professional certifies that the solar-ready zone area required by Section C603.4 cannot be met because of extensive rooftop equipment, skylights, occupiable rooftop areas, vegetative roof areas or similar obstructions.
5. Group H occupancies.
C603.3 Construction document requirements for a solar-ready zone.
Construction documents shall indicate the solar-ready zone.
C603.4 Solar-ready zone area.
The total solar-ready zone surface area shall be not less than 40 percent of the available roof area. The available roof area is the horizontally projected gross roof area less areas covered by skylights, rooftop parking or helipads, occupiable rooftops, vegetative roof areas and mandatory access or set back areas as required by Section 1204 of the Chicago Fire Prevention Code. The solar-ready zone shall be either a single area or smaller, separated sub-zone areas. Each sub-zone shall be not less than 5 feet (1524 mm) in width in the narrowest dimension.
Exception: A solar-ready zone shall not be required if the available roof area is less than 2,000 square feet (186 m2).
C603.5 Obstructions.
Solar ready zones shall be free from obstructions, including pipes, vents, ducts, HVAC equipment, skylights and roof-mounted equipment.
C603.6 Roof loads and documentation.
A collateral dead load of not less than 5 pounds per square foot (5 psf) (24.41 kg/m2) shall be included in the gravity and lateral design calculations for the solar-ready zone. The structural design loads for roof dead load and roof live load shall be indicated on the construction documents.
C603.7 Interconnection pathway.
Construction documents shall indicate pathways for future routing of conduit or piping from the solar-ready zone to the electrical service panel and energy storage system-ready area or service water heating system.
C603.8 Energy storage system-ready area.
The floor area of the energy storage system-ready area shall be not less than 2 feet (610 mm) in one dimension and 4 feet (1219 mm) in the perpendicular dimension and located in accordance with the Chicago Fire Prevention Code. The location and layout diagram of the energy storage system-ready area shall be indicated on the construction documents.
C603.9 Electrical service reserved space.
The main electrical service panel shall have a reserved space to allow installation of a dual-pole circuit breaker for future solar electric and a dual-pole circuit breaker for future energy storage system installation. These spaces shall be labeled "For Future Solar Electric and Storage." The reserved spaces shall be positioned at the end of the panel that is opposite from the panel supply conductor connection.
C603.10 Permanent certificate.
A permanent certificate, indicating the location and dimensions of the solar-ready zone and other requirements of this section, shall be posted near the electrical distribution panel, water heater or other conspicuous location by the builder.
C604 ELECTRIFICATION-READY RESIDENCES
C604.1 Scope.
This section shall apply to equipment within dwelling units and rooms and spaces provided with domestic cooking appliances shared by the occupants of more than one dwelling unit in Group R-2 occupancies that are created through:
1. New construction.
2. Change of occupancy.
Exception: Change of occupancy within Group R.
This section shall not apply to alterations, additions, repairs or changes of occupancy to existing Group R occupancies.
C604.2 Indoor cooking appliances.
A receptacle outlet served by an individual branch circuit with a minimum rating of 40 amperes shall be installed within 3 feet (914 mm) of each fuel gas-fired range, cooktop, oven or other permanently installed indoor cooking appliance. A minimum of 9,600 VA for 240-volt systems or 8,000 VA for 208-volt systems shall be included in feeder and service load calculations.
C604.3 Domestic clothes dryers.
A receptacle outlet served by an individual branch circuit with a minimum rating of 30 amperes shall be installed within 3 feet (914 mm) of each fuel gas-fired domestic clothes dryer. A minimum of 5,000 VA shall be included in feeder and service load calculations.
C604.4 Water heaters.
C604.4.1 Clear space.
A clear space that is at least 3 feet (914 mm) by 3 feet (914 mm) by 7 feet (2134 mm) high shall be provided within 3 feet (914 mm) of the installed fuel gas-fired water heater.
Exception: Clear space is not required adjacent to heat pump water heaters or tankless water heaters.
C604.5 Electrification-ready circuits.
Both ends of the unused conductors required by Sections C604.2, C604.3 and C604.4 shall be labeled "SPARE" and be electrically isolated. Space shall be reserved in the electrical panel in which the branch circuit originates for the installation of an overcurrent device. Capacity for the circuits required by Sections C604.2, C604.3 and C604.4 shall be included in the electrical load calculations of the original installation.
C605 EXTERIOR BALCONIES AND PARAPETS
C605.1 Continuous insulation.
In new construction, exterior balconies and parapets that interrupt the building thermal envelope shall comply with one of the following:
1. Shall be insulated with continuous insulation having a minimum thermal resistance (R-value) equivalent to the continuous insulation component required in the adjacent wall assembly as listed in Table C402.1.3. Where more than one wall assembly is interrupted by an adjacent balcony, the higher thermal resistance (R-value) shall be used.
2. Shall incorporate a minimum R-3 thermal break at the location where the element penetrates the building thermal envelope.
Exception: Penetrations in the building thermal envelope that do not exceed 1 square foot (0.09 m2).
C606 GAS LIGHTING PROHIBITED
C606.1 General.
New permanently installed fuel gas-fired lighting appliances shall be prohibited.
C607 ROOF SOLAR REFLECTANCE
C607.1 General.
Roof coverings shall comply with Section 1515 of the Chicago Building Code.
C608 ELECTRIC VEHICLE SUPPLY EQUIPMENT
C608.1 General.
Electric vehicle supply equipment or electric vehicle supply equipment-ready parking spaces shall be provided in accordance with Section 17-10-1011 of the Chicago Zoning Ordinance."