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 | May 29, 2018
Government support helping to drive demand for green building materials
Market projects to grow 12.5% annually between 2013 and 2019.
Codes and Standards | May 24, 2018
‘Amazon tax’ could slow Seattle’s construction boom
City imposes employer head count tax to fund affordable housing.
Codes and Standards | May 23, 2018
AAMA releases 2017/2018 fenestration market studies
Offers forecasts of industry trends.
Codes and Standards | May 22, 2018
Registration open for 2018 National Energy Codes Conference
U.S. Department of Energy event to be held July 15th-17th in Austin.
Codes and Standards | May 21, 2018
New standard tests quietness of floors
ASTM International method will help manufacturers test their flooring materials.
Codes and Standards | May 17, 2018
California will require solar panels on most new homes
Projected to add $10,000 to cost of new homes.
Codes and Standards | May 16, 2018
New resources offer tips on off-site construction
NIBS documents address using pre-cast concrete, and commercial and legal considerations of modular construction.
Codes and Standards | May 15, 2018
Blast testing of loaded mass timber structures yields positive results
Four tests covered a spectrum of blast loads.
Codes and Standards | May 14, 2018
Maryland makes general contractors liable for failure of subs to pay employees
GCs could have to pay for up to three times the wages owed.
Codes and Standards | May 10, 2018
Data collection, machine learning boost building efficiency
Sensors, software algorithms squeeze out waste.
