Denver voters passed one of the strictest green roof mandates of any city in the world earlier this month.
Initiative 300, passed with about 54% of votes cast, creates a new building code that requires vegetative roof systems or solar panels for most buildings 25,000 sf or larger constructed after Jan. 1, 2018. The measure is more stringent than other green roof codes because it also requires many existing buildings to be retrofitted with green roofs when a roof needs replacement.
Older buildings that cannot support the load of a vegetative roof can get an exemption. The measure is intended to help keep the outdoor air cooler, reduce stormwater runoff, reduce the amount of energy consumed by air conditioners, and, in the case of PVs, generate clean energy.
Opponents of the referendum were concerned that it would be costly and hurt nonprofits and affordable housing programs. Advocates conceded that green roofs cost more, but argued that they would pay for themselves in about six years.
Related Stories
| Nov 26, 2012
How to boost resilient systems that are sustainable
Cities of the future can be both more resilient and more sustainable by promoting strategies that include solar power and green roofs, programs that minimize demand for energy, rain gardens, and permeable pavement.
| Nov 26, 2012
Developer of nation’s first LEED platinum skyscraper focuses on carbon reduction
The Durst Organization, the developer of the first LEED platinum certified skyscraper in the country, says it will not seek LEED certification for its residential pyramid planned for New York’s West 57th Street.
| Nov 26, 2012
Questions linger over ability of Miami's newer high-rises to withstand hurricanes
Some towers in Miami, rebuilt after a hurricane in 2005, were allowed to be constructed under older building codes instead of newer ones created after Hurricane Wilma.
| Nov 26, 2012
Changes in development and building standards needed for health of Potomac River
The Potomac River’s health stands to suffer if the region does not change its development and building standards, according to the Potomac Conservancy.
| Nov 16, 2012
South Dakota prefers LEED over building code on state projects
“(LEED is) much better than a mandatory building code because you get a little wiggle room in these projects,” said Mike Mueller, a spokesman for the South Dakota Bureau of Administration.
| Nov 16, 2012
AAMA publishes quality assurance guidelines for Polyamide Thermal Barriers
The American Architectural Manufacturers Association (AAMA) has published QAG-2-12, Voluntary Quality Assurance Processing Guide for Polyamide Thermal Barriers.
| Nov 16, 2012
New ANSI/BIFMA standards developed for educational seating
The American National Standards Institute (ANSI) has approved the newly developed safety and performance standard for educational seating: ANSI/BIFMA X6.1-2012—the first of its kind.
