5 ms·
Isn't it strange that all 24 internal columns of building 7 would collapse simultaneously? Even if the office fires burned hot enough to compromise the columns
by wombatmobile 5y ago
Isn't it strange that all 24 internal columns of building 7 would collapse simultaneously?
Even if the office fires burned hot enough to compromise the columns, wouldn't they have advanced gradually over the diagonal span, trigger slow sequential collapses that might have resulted in the building listing or distorting, rather than falling flat to the ground in 5 seconds?
Would thermite be deployed explosively at 140db, or might it work over a longer period of minutes at lower volume to heat the steel columns to 700 degrees, the temperature at which it would lose structural integrity?
- jasonwatkinspdx 5y agoThere's nothing mysterious here. Once a column begins to fail, the load it was supporting transfers to other columns. If several columns are weakened simultaneously, the remaining columns are pushed past their safety margins very rapidly, and the building enters a progressive collapse.
- danielschonfeld 5y agoShould be very simple then to produce a model that would look like the actual video footage of the building's collapse in the real world wouldn't it? Yet here we are, 20 years later with no such model...