Two separate failures of three cantilevered flanges of three precast, prestressed-concrete double-T parking-deck sections—reinforced with a non-code-compliant, high-strength carbon-fiber-reinforced polymer grid—are putting the spotlight on the structural safety of corrosion-resistant FRP grids for transverse reinforcement of double-Ts.
When drivers began using two new lanes of the Bayonne Bridge between Staten Island and New Jersey last month, they crossed not only the Kill Van Kull waterway but also a nexus between a historic engineering past and a modern engineering present.
The architecture and structure of London’s emerging 62-story building at 22 Bishopsgate bear no resemblance to its predecessor, called the Pinnacle, initially intended for the same site but abandoned soon after coming out of the ground.
In a step toward meeting one of President Trump’s most prominent campaign pledges, the Dept. of Homeland Security is seeking firms to provide prototypes of a U.S.-Mexico border barrier.
Revisions to UL Design No. D982 in the UL Fire Resistance Directory, based on recent fire tests, have heated up long-standing differences between structural-steel interests and fire-protection suppliers and installers about the amount of sprayed-on fire-protection material needed for structural-steel floor assemblies.
In a recent presentation at a San Francisco conference on optics and photonics, researchers presented papers describing their successful tests of optical data transmission tools, which soon may replace current data centers’ thousands of miles of fiber-optic cables with overhead layer of infrared laser beams, lenses and mirrors.
The International Code Council has approved—as expected—the updated structural building-design standard, written by the American Society of Civil Engineers Structural Engineering Institute, for inclusion in the 2018 edition of the ICC’s model International Building Code.