On 2018-09-24 22:59, z9wahqvh wrote:
the report itself says in plain English at the same time. NIST engineers did/do consider what happened at WTC7 to be unusual.
It is unusual for a building to be smashed up by the collapse of an adjacent building, and for there then to be no water with which to fight the fires and firemen facing considerably more urgent matters. That World Trade Center Seven was designed to withstand at least three hours of fire implies that the designers expected the fires to be controlled in less than three hours. And, of course, they were not.
"Since WTC 7 was not doused with thousands of gallons of jet fuel, large areas of any floor were not ignited simultaneously.
But the fires, being unfought, then joined together in subsequent hours as one big fire.