Chapter 14 Flashcards
In 2012, ___ firefighters were killed by collapsing roofs and walls.
4 firefighters
Fire and explosion damage precipitators of collapse; sustained ___ to ___ fire conditions, measured form the time of ignition, not arrival time.
Moderate to heavy
Types of collapse - The destruction of the world trade center twin towers and building #7 are examples of ___.
Global collapse
Tilt wall failure is an exempt of ___.
90° collapse
The ___, two of the largest and tallest buildings ever constructed, were built by the Port Authority of New York and New Jersey, which were exempt from all local building and fire codes.
Twin Towers
Each of the twin towers was ___ stories high, and each floor was ___ sq ft in area.
110 stories
40,000 sq ft
When the planes struck the twin towers, approximately ___% of the jet fuel was ignited.
15%
A ___ wall is the most stable, a ___wall is less stable, and a ___ wall is the least stable and the most dangerous.
Bearing wall
Non bearing wall
Freestanding wall
Tie rods are unprotected steel and weaken or fail at temperature between ___.
800-1,000°F
