Fire codes prevent cladding used on Grenfell Tower from being used in U.S.

The exterior aluminum cladding with flammable polyethylene core used on the Grenfell Tower in London is banned in the US on buildings taller than 40 feet.

The cladding is suspected of being the main factor in creating an inferno that killed at least 79 people in the residential tower. The plastic-and-aluminum panels on Grenfell Tower were reportedly also involved in three catastrophic fires in Dubai. Reports suggest it would have cost an additional £5,000 (about $6,300) for contractors to apply a fire-resistant version of the cladding to the building.

Other factors including the gap between the wall and the rain screen, which could have created a chimney effect and sped flames and smoke up the building’s exterior; ineffectual fire alarms; a lack of sprinklers; and just a single fire stairway instead of multiple ones have been suspected of contributing to the high loss of life.

Thousands of residential high rises across the U.K. are expected to undergo urgent safety reviews as a result of the tragedy.

New York City has two very large buildings dedicated to answering the 911 calls of its five boroughs. With more than 11 million emergency calls annually, it makes perfect sense. The second of these buildings, the Public Safety Answering Center II (PSAC II) is located on a nine-acre parcel of land in the Bronx. It’s an imposing 450,000 square-foot structure—a 240-foot-wide by 240-foot-tall cube. The gleaming aluminum cube risesthe equivalent of 24 stories from behind a grassy berm, projecting the unlikely impression that it might actually be floating. Like most visually striking structures, the building has drawn as much scorn as it has admiration.