A recently released study by the National Bureau of Economic Research found that California’s building code for higher risk wildfire areas has significantly reduced structural loss.
A home built in 2008 or later under the Golden State’s expanded wildfire building code is about 40% less likely to be destroyed than a 1990 home experiencing an identical wildfire, according to the research. “There is strong evidence that these effects are due to state and local building code changes,” the bureau’s report says.
California now requires all roof material in wildfire hazard areas to be rated Class A for fire resistance. In addition, exterior siding must be fire resistant, vents must covered by a fine wire mesh to resist ember intrusion, windows and doors must resist fire for at least
20 minutes, and decks and other building appendages must be built of non-combustible materials. The most recently update code also includes requirements for defensible space.
Other states that have experienced damaging large-scale wildfires including Arizona, Colorado, Oregon, and Washington have not as yet followed California’s lead to beef up building codes. California’s code, research suggests, presents a useful model for others to follow.
Related Stories
Industry Research | Sep 12, 2016
Evidence linking classroom design to improved learning mounts
A study finds the impact can be as much as 25% per year.
Legislation | Sep 8, 2016
Half of U.S. states now allow design-build on public projects
Missouri is the latest to enact design-build legislation.
Codes and Standards | Sep 8, 2016
Vapor intrusion risk addressed in new ASTM guide update
The updates address industry confusion over how to handle the issue.
BIM and Information Technology | Sep 7, 2016
Energy Star Portfolio Manager tool updated to factor in waste management
The costs and benefits of managing 29 types of waste are now included.
Wood | Sep 6, 2016
Atlanta suburb prohibits wood-framed construction for high rises
The new building code prevents any structure with more than three stories from being built from a CLT frame.
Codes and Standards | Sep 1, 2016
Overuse of air conditioning hurts office productivity
A study found temperatures in the low 70s reduce worker performance.
Regulations | Aug 31, 2016
FEMA wants to toughen flood regulation on projects using federal funds
The proposal ‘would essentially rewrite the current 100-year flood standard.’
Sustainability | Aug 30, 2016
New federal project plans must include climate impacts
Agencies must quantify the specific impacts when possible.
Green | Aug 29, 2016
Vancouver, B.C., to require zero emissions on new buildings by 2030
No net GHG emissions will be allowed.
Codes and Standards | Aug 25, 2016
Freddie Mac extends efforts to fund multifamily energy/water efficiency projects
The Multifamily Green Advantage targets existing buildings.