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 | Nov 11, 2019
U.S. hotel construction pipeline continues its year-over-year growth
In its eighth consecutive quarter of growth, projects currently under construction stand at 1,729 projects/235,278 rooms.
Codes and Standards | Nov 11, 2019
New retrofit design guide for metal roofing published
Metal Construction Association document provides best practices for re-roofing with metal.
Codes and Standards | Nov 8, 2019
New York City among the top hotel construction pipelines in the United States
Hotels presently under construction are at 102 projects/17,504 rooms.
Codes and Standards | Nov 7, 2019
Group focused on using AI for construction safety gains key members
Major contractors join partnership to share data to predict hazards, incidents.
Codes and Standards | Nov 6, 2019
Undisclosed ICC agreement with NAHB alleged to thwart more stringent efficiency codes
Homebuilders’ seats on ICC made it easier to block new provisions, report alleges.
Codes and Standards | Nov 4, 2019
ASHRAE releases new version of energy efficiency standard for buildings
Standard 90.1 includes revisions of envelope, lighting, HVAC provisions.
Codes and Standards | Nov 1, 2019
Resiliency of a community’s housing stock can be measured according to new benchmark
Metric can help municipalities prepare for disasters.
Codes and Standards | Oct 31, 2019
FEMA, ICC release updated guide on integrating I-Codes into floodplain management regulations
Provides advice on satisfying requirements for the National Flood Insurance Program.
Codes and Standards | Oct 30, 2019
ILFI releases new version of Living Building Challenge Framework for Affordable Housing
Document includes updated findings, case studies, new strategies for financing, designing, building affordable housing.
Codes and Standards | Oct 28, 2019
U.S. military demands landlords address health hazards in troop housing
Air Force threatens formal dispute process.