14B-15-1514 Vegetative roofs, roof gardens and landscaped roofs.
The following language is adopted as a new Section 1514:
"1514. VEGETATIVE ROOFS, ROOF GARDENS AND LANDSCAPED ROOFS
1514.1 General.
Vegetative roofs, roof gardens and landscaped roofs shall be installed and maintained in accordance with Sections 1505, 1507.16, and 1514.2 through 1514.6.
1514.1.1 Intended for occupancy.
Vegetative roofs, roof gardens and landscaped roofs that are intended for occupancy shall also comply with Section 1513.
1514.2 Standard.
Vegetative roofs, roof gardens and landscaped roofs shall be installed in accordance with ANSI/SPRI VF-1.
1514.3 Maximum area.
Vegetative roof, roof garden or landscaped roof areas shall not exceed 15,625 square feet (1450 m2) for any single area with a maximum dimension of 125 feet (39 m) in length and width. A minimum 6 foot (1.8 m) wide clearance consisting of Class A roof covering shall be provided between adjacent vegetative roof, roof garden or landscaped roof areas.
1514.4 Clearances.
Vegetative roof, roof garden and landscaped roof areas shall be separated from combustible vertical surfaces, intake and exhaust openings and rooftop equipment by a 6 foot (1.8 m) wide surface consisting of Class A roof covering.
Exception: Separation from plumbing exhaust openings is not required.
1514.5 Maintenance.
Vegetation shall be maintained in accordance with Sections 1514.5.1 through 1514.5.3.
1514.5.1 Maintenance plan.
The fire code official is authorized to require a maintenance plan for vegetation placed on roofs.
1514.5.2 Water source.
A water source shall be provided to maintain levels of hydration necessary to keep vegetation alive and to keep dry foliage to a minimum.
1514.5.3 Dead foliage.
Excess biomass, such as overgrown vegetation, leaves and other dead and decaying material shall be removed at regular intervals not less than two times per year.
1514.6 Maintenance equipment.
Fueled equipment used for the care and maintenance of vegetation on roofs shall be stored in accordance with the Chicago Fire Prevention Code."