U.S. National Institute of Standards and Technology code revision recommendations in the wake of the World Trade Center terrorist attacks are being implemented in new high-rise construction, including One World Trade Center, the lead building of the new World Trade Center complex.
New requirements include:
- Buildings taller than 420 feet are now required to include an extra exit stairwell or a specially designed elevator that occupants can use for evacuations
- Stairwells in buildings more than 75 feet high must now have glow-in-the-dark markings that show the exit path even when lighting is out or dim
- Spray-applied fire-resistive materials must perform four times more effectively than current requirements in buildings 75 to 420 feet tall, and more than seven times better in buildings taller than 420 feet. BD+C
Related Stories
Codes and Standards | Dec 13, 2018
Urban flooding causing economic loss, social disruption, and housing inequality
Extensive suburban development, aging and poorly maintained infrastructure, and more intense rainfall mean more flooding.
Codes and Standards | Dec 12, 2018
California’s transportation problems could prevent state from reaching carbon reduction goals
Governor’s carbon neutral-by-2045 ambitions at odds with car culture.
Codes and Standards | Dec 11, 2018
Strict seismic building codes credited with minimizing damage in Alaskan earthquake
Magnitude 7.0 temblor cracked roads and collapsed road ramps, but buildings held up well.
Codes and Standards | Dec 7, 2018
Florida tops ABC’s 2018 Merit Shop Scorecard rankings
Michigan rose fastest after passing prevailing wage law.
Codes and Standards | Dec 6, 2018
North American steel yields lower GHG emissions than Chinese steel
North American construction steel saves about half of GHG emissions on building project.
Codes and Standards | Dec 5, 2018
Canadian retailer builds net-zero stores
Other chains also boost green efforts with PVs, EV charging stations.
Codes and Standards | Dec 4, 2018
Action on building codes would spur low-carbon cities
Faster retrofit cycles, increased energy-efficiency requirements for existing buildings needed.
Codes and Standards | Nov 30, 2018
Best solution to prevent California wildfire disasters: Stop building in places likely to burn
Approach would be unpopular as people attracted to stunning wooded landscapes.
Codes and Standards | Nov 29, 2018
USGBC and BRE form partnership
Two green standards groups will collaborate on standards, platforms, and research.
Codes and Standards | Nov 29, 2018
Parking garages in N.Y. State will have to be inspected every three years
Professional engineer must assess conditions.