[mallowdram]

Article neglects that the WTC defied NYFD building codes on egress. If the code was applied as existing in 1966, it would require 8 or 9 fireproof staircases. Instead Rockefeller asked for and got a pass and the building instead had three staircases embedded in six layers of drywall, which is far else than the then standard fireproofing (brick encased). Not only that, they had non-standard transit corridors that wove egress routes around the two sky lobbies.

[1718627440]

This rules aren't there for no reason.

[bamboozled]

Honest question , would it have changed much ?

[mallowdram]

I suspect so. The case was made in 102 minutes, a NY Times book detailing how 18 people on or above the South Tower's impact zone managed to escape in one of the partially collapsed staircases. Were the stairs built to firecode specs in place in 1966, and not in the flimsy manner expedited by Rockefeller, these stairs would have easily survived intact long enough for many more than 18 to survive.

[bamboozled]

I guess we're talking about not just brick, but reinforced concrete infused brick ? Anyway I'd be interested to read more about it, thanks.

[mallowdram]

Right, it's fireproof brick, isolated steel stairs, pressurized air, 120 m fireproof doors.