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
Codes and Standards | Mar 13, 2018
OSHA delays enforcement of beryllium exposure rule
The Occupational Safety and Health Administration (OSHA) voted to delay new beryllium exposure rules until May 11.
Codes and Standards | Mar 12, 2018
L.A. mayor proposes mandatory seismic retrofits for steel buildings, daycare centers, private schools
Los Angeles Mayor Eric Garcetti has proposed a seismic retrofit requirement for vulnerable steel buildings built before the 1994 Northridge earthquake.
Codes and Standards | Mar 8, 2018
Net zero commercial building trend shows strong momentum
Almost 50% more zero energy commercial buildings under construction in 2017.
Codes and Standards | Mar 7, 2018
Dept. of Energy says 2016 ANSI/ASHRAE/IES Standard 90.1 would save 8.2% of energy costs
Favorable comparison to 2013 standard for commercial buildings.
Codes and Standards | Mar 6, 2018
Well Living Lab launches extensive study on how indoor environments affect people’s lives
Factors that impact health, performance, stress and resiliency, sleep, and comfort to be scrutinized.
Codes and Standards | Mar 5, 2018
New guide helps planners assess innovation districts
The document is designed to aid in targeting resources toward innovative and inclusive economic development based on an area’s unique strengths and challenges.
Codes and Standards | Mar 1, 2018
Net zero commercial building trend shows strong momentum
Almost 50% more zero energy commercial buildings under construction in 2017.
Codes and Standards | Feb 28, 2018
AEC industry reported high levels of fraud, cyber breaches, and security incidents in 2017
83% experienced at least one fraud incident.
Codes and Standards | Feb 27, 2018
Smart surface solutions can improve disaster resilience, health and comfort in cities
Stormwater management, water quality, and heat island effect could all be impacted.
Codes and Standards | Feb 26, 2018
Bolstering energy efficiency would produce significant health benefits, ACEEE study says
Reducing energy consumption by 15% would save six lives a day.
