When Buildings Collapse....

Here's a shot of a building that collapsed in Shanghai just recently.
Nota bene that it did NOT collapse into it's own footprint through the path of GREATEST resistance.
Compare and contrast with the WTC collapses on Sept 11. 2001.

To learn more about fire, explosions and building collapses, have a look at NFPA (National Fire Protection Association) 921 "Guide for Fire and Explosion Investigations." It's the national standard.

sj