The National Institute of Building Sciences is advising the owners of the nation’s estimated 1,500 professional, college and community sports venues to join in a collective effort to reduce energy and water consumption—and utility bills.
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.
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.
Two days after the Sept. 11, 2001, terrorist attacks on the World Trade Center, structural engineer Irwin G. Cantor—guided by steel erector Bobby Stuart—walked up a darkened staircase to the 18th floor of a World Financial Center tower near Ground Zero, which his office had engineered in the 1980s.
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.