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 | Jun 7, 2017
New Colorado law could stimulate stalled condo market
Construction defect law modifications could ease litigation risk and cut insurance rates.
Codes and Standards | Jun 6, 2017
New York City will require construction superintendents on buildings higher than three stories
New laws focus on construction safety.
Codes and Standards | May 30, 2017
Industry Groups move toward Unified Green Building Model Code in 2018
The effort involves combining ASHRAE's Standard 189.1 with the International Green Construction Code.
Codes and Standards | May 30, 2017
OSHA suspends electronic injury, illness reporting requirement
The agency is keeping records from being publicly disclosed—for now.
Codes and Standards | May 30, 2017
Florida preparing to adjust to new building elevation requirements
New floodplain maps and state code changes loom.
Codes and Standards | May 30, 2017
Heated debate over whether Calif.’s prevailing wage requirement stymies affordable housing
There’s disagreement around how much pay regulations add to cost of projects.
Codes and Standards | May 25, 2017
Technology is influencing parking requirement codes in new developments
Uber and Lyft make it easier for urban dwellers to live without owning cars.
Codes and Standards | May 25, 2017
Better Buildings Challenge Partners on track to reduce energy usage by 20% in 10 years
More than 1,000 proven solutions are now available on DOE web site.
Codes and Standards | May 22, 2017
Affordable housing initiative drives surge in residential unit permits in New York City
New permits tripled from year-ago period.
Codes and Standards | May 22, 2017
Amid labor shortage, industry groups urge government action to boost trades
AGC says a shortage of qualified workers is limiting the economy from adding more jobs.
