Well, once upon a time the church had no alternatives to an earth in the center of the world. So how many possibilities do we have?
Let's see, the NIST Interim Report had a theory about a buckled column 79 but also stated that column 79 only would buckle over an unsupported length of at least 4 floors if the steel temperature reaches 500°C.
Well, that seems to be pretty impossible for columns of a 3h fire resistance rating in the fuel lacking core area and an office space that burned away within about 20 minutes per area.
After years of hard work to animate fires at the SEC floors - guiding the fires by opening windows - setting up little fires in the north to "simulate" the spreading that didn't occur in the model - copying floors on fire and paste it one above the other - they got an surprising result: somehow the area around column 79 burnt for hours one floor above the other.
...and another surprise: 5 floors of unsupported column length and a steel temperature of above 150° (even if the report found no evidence for fire in the west of e.g. the 12th floor after 3:13pm).
So how many possibilities are left?
Whats about noodling column 79 for example in the basement near those strange hot spots found by AVIRIS?
No, whats about noodling column 81 and 80 for example in the basement near those strange hot spots found by AVIRIS? (...just because 80 and 81 must have been gone prior to 79.)
Let's see, the NIST Interim Report had a theory about a buckled column 79 but also stated that column 79 only would buckle over an unsupported length of at least 4 floors if the steel temperature reaches 500°C.
Well, that seems to be pretty impossible for columns of a 3h fire resistance rating in the fuel lacking core area and an office space that burned away within about 20 minutes per area.
After years of hard work to animate fires at the SEC floors - guiding the fires by opening windows - setting up little fires in the north to "simulate" the spreading that didn't occur in the model - copying floors on fire and paste it one above the other - they got an surprising result: somehow the area around column 79 burnt for hours one floor above the other.
...and another surprise: 5 floors of unsupported column length and a steel temperature of above 150° (even if the report found no evidence for fire in the west of e.g. the 12th floor after 3:13pm).
So how many possibilities are left?
Whats about noodling column 79 for example in the basement near those strange hot spots found by AVIRIS?
No, whats about noodling column 81 and 80 for example in the basement near those strange hot spots found by AVIRIS? (...just because 80 and 81 must have been gone prior to 79.)
Last edited: