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 | Aug 12, 2021
AGC pushes for more environmentally friendly construction
Contractor trade group supports government investment, tax incentives to reduce carbon footprints.
Codes and Standards | Aug 11, 2021
Decentralized approach to codes means emissions reduction responsibility falls on local officials
Efficiency advocates focusing more on local code amendments.
Codes and Standards | Aug 10, 2021
Dept. of Energy issues model energy code determinations for commercial, residential buildings
2021 IECC offers 9.4% site energy savings.
Digital Twin | Aug 9, 2021
Digital Twin Maturity white paper offers guidance on digital twin adoption
Provides lifecycle map and an approach for incorporating digital twins.
Codes and Standards | Aug 5, 2021
Contractors can be liable for building failures many years after project completion
Personal injury suits could be brought decades after substantial completion.
Codes and Standards | Aug 4, 2021
Mass timber is a natural choice for building recycling through deconstruction
Designing wood buildings to optimize recovery of materials for disassembly aids carbon sequestration.
Codes and Standards | Aug 3, 2021
Dept. of Energy releases initial version of the Spawn of EnergyPlus software
Targets new use cases in advanced controls, district systems, and grid integration.
Codes and Standards | Aug 2, 2021
Several U.S. cities among most expensive places to build in the world
San Francisco, New York, and Boston head the domestic list.
Codes and Standards | Jul 28, 2021
American Concrete Institute creates new director of innovative concrete technology post
Aim is to attract emerging technologies for development.
Codes and Standards | Jul 28, 2021
Higher ed faces infrastructure backlog of $112.3 billion
Study recommends integrated strategic planning for best results.
