Comment: Sorry man....

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Sorry man....

I know it seems like those sounds have to be explosions; but they're not.

The decibel level is caused by all those steel beams snapping while the entire mass of the building collapses on itself. And there are no sequential explosions after that. It's the sound of 450,000,000 kg coming to the ground in a very quick fashion. The impulse[(F*Δt) or (mass * acceleration * change in time)] is very big and makes lots of big bangs.

Also, you've got electrical transformers and wiring through the entire building.