Green Roof Mandate

The ordinance made san francisco the first major u s.

Green roof mandate.

Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although. A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium planted over a waterproofing membrane it may also include additional layers such as a root barrier and drainage and irrigation systems. City to mandate solar and living roofs on between 15 percent and 30 percent of most new. A roof assembly with a slope greater than 17 that would accommodate less than 4kw of solar electricity generating capacity.

Green roofs are subject to the design and construction requirements detailed in article iv section 4 02 d in the rules and regulations pdf. Green roof requirements are on the rise. Areas where dob determines that site conditions are unfavorable to either a solar photovoltaic electricity generating system or a green roof system. The proposed green roof requirement is based largely on the city of toronto green roof law but would apply to not only new but also expanded existing buildings with over 25 000 square feet.

This is believed to be the first successful voter initiative petitioning a green roof mandate to voter ballot.