The new International Building Code now allows for the use of weather-resistive barriers above 40 feet high.
Code restrictions had been designed to limit the use of combustible materials that might propagate flames. In the 2015 update, however, exceptions are allowed that recognize that in certain circumstances a weather-resistive barrier by itself would be a negligible contributor to the spread of flames.
This change should result in an energy efficiency boost in cases where builders have had to transition to less efficient methods of weather sealing above 40 feet. Weather-resistive barriers are now allowed in walls in which the water-resistive barrier is the only combustible component and the exterior wall has a fire-resistant wall covering of brick, concrete, stone, terracotta, stucco, or steel.
The material can also be used in walls in which the water-resistive barrier is the only combustible component and the water-resistive barrier has certain heat, flame spread, and smoke properties in accordance with ASTM E 1354 and ASTM E84 or UL723.
Related Stories
Codes and Standards | Mar 5, 2015
Charlotte, N.C., considers rule for gender-neutral public bathrooms
A few other cities, including Philadelphia, Austin, Texas, and Washington D.C., already have gender-neutral bathroom regulations.
Codes and Standards | Mar 5, 2015
FEMA cuts off funding to Indiana after Kokomo continues building stadium in flood zone
FEMA will withhold funding on $5.5 million worth of projects such as building tornado safe rooms in schools.
Codes and Standards | Mar 5, 2015
Construction problems at prison spur support to quash non-traditional project delivery in Iowa
Iowa lawmakers are investigating construction problems at the Fort Madison prison project and are scrutinizing rules regarding project delivery on state projects.
Codes and Standards | Mar 5, 2015
AEC industry groups look to harmonize green building standards, codes
The USGBC, ASHRAE, ICC, IES, and AIA are collaborating on a single green code.
Codes and Standards | Mar 2, 2015
Nevada moves to suspend prevailing wage rules on school projects
The Nevada Senate approved a bill that would suspend prevailing wage rules on school projects.
Codes and Standards | Mar 2, 2015
Proposed energy standard for data centers, telecom buildings open for public comment
The intent of ASHRAE Standard 90.4P is to create a performance-based approach that would be more flexible and accommodating of innovative change.
Codes and Standards | Feb 22, 2015
Louisiana officials critical of stricter building standards in flood-prone areas
Buildings would have to be built either two or three feet above the base flood elevation for a 100-year flood or above the base elevation for a 500-year flood.
Codes and Standards | Feb 18, 2015
Buildings with rocking steel-braced frames are advantageous in earthquakes
Research at Case Western Reserve University has found that buildings that rock during an earthquake and return to plumb would withstand seismic shaking better than structural designs commonly used today in vulnerable zones of California and elsewhere.
Codes and Standards | Feb 18, 2015
USGBC concerned about developers using LEED registration in marketing
LEED administrators are concerned about a small group of developers or project owners who tout their projects as “LEED pre-certified” and then fail to follow through with certification.
Codes and Standards | Feb 12, 2015
ASHRAE, USGBC, IES consider biomass requirements in green building standard
The proposal would add biomass to approved renewables.