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 | Oct 28, 2021
Design competition launched to show role of mass timber in decarbonization
Forest Service and Softwood Lumber Board will award $2 million in grants to winning teams.
Codes and Standards | Oct 27, 2021
Texas reforms series of contractor laws
Measures seen as making it easier to do business in the state.
Codes and Standards | Oct 26, 2021
Drownings during Hurricane Ida point out FEMA flood map flaws
Eleven people drowned in New York City in areas marked as low risk.
Codes and Standards | Oct 26, 2021
Dept. of Energy’s REScheck tool updated for the 2021 International Energy Conservation Code
Previous version incorporated 2018 code.
Codes and Standards | Oct 20, 2021
New York City passes overhaul of construction codes
Over 600 major changes along with thousands of smaller updates slated for 2022.
Codes and Standards | Oct 20, 2021
One-quarter of U.S. critical infrastructure at risk of failure due to flooding
Police and fire stations, hospitals, airports, and wastewater treatment facilities face threat.
Codes and Standards | Oct 19, 2021
Pittsburgh enacts first-in-the-nation “Dark Sky Lighting” law
Applies to all city parks, facilities, and streetlights.
Codes and Standards | Oct 15, 2021
New Calif. law mandates use of lead-free plumbing fixtures
Must meet NSF/ANSI/CAN 61-2020 in 2023.
Codes and Standards | Oct 14, 2021
Building industry leaders urge governments to boost emissions reductions targets
Scores of large AEC firms and organizations sign letter to UN’s COP 26 group.
Codes and Standards | Oct 13, 2021
FEMA’s new flood insurance plan will sharply raise insurance costs for seaside properties
Risk Rating 2.0 will have more accurate assessment of flood risk.
