Chapter 765.4a of the NYS Code requires that buildings with over two stories
(and having a roof slope of less than 15 degrees) have one or more stair
towers that lead to the roof (the number depends on the number of stair
towers).  Unfortunately as a practical matter (at least where I work, a
university) they are kept locked to prevent people from using them in
non-emergency situations (I don't think this complies with the intent of the
code).  Perhaps they could be on releases controlled by the central fire
alarm system or have the crash bars that alert of someone using them (like
the "emergency only--alarm will sound" crash bars on some doors)?

Two story buildings with roof slopes of 15 degrees or less and not having
stair access can use a scuttle and ladder to the roof is an alternate.

Three foot high parapet walls or railings are required where roof access is
available.


-----Original Message-----
From: Met History [mailto:[log in to unmask]]
Sent: Tuesday, October 23, 2001 10:08 AM
To: [log in to unmask]
Subject: Failed Heli-evac from WTC roof - today's Wall Street Journal


The WSJ of today, Tuesday, reports on why no one was evacuated from the WTC
roof on September 11th.   The Fire Department, which has no helicopters,
bitterly (and successfully) fought rooftop evacuation scenarios at the WTC
after the 1993 bombing (jealous that the police did evac people off the roof
at that time).

On September 11th, police helicopters repeatedly came in close to the WTC
roof to pick up people, but [pilot] "there wasn't anyone there".  By FD
orders, the doors to the roof were locked.

Hope Afghanistan effort fares better.

Christopher Gray