Smoke Control System in Action

We had the unique opportunity of testing a smoke control corridor exhaust system using theatrical smoke in a high-rise building. The sequence shows just how effective they are at evacuating the smoke from the corridor. This is what it looked like when the fire alarm activated:

After 60 seconds, it looked like this:

And after 140 seconds, it looked like this:

It shows the value of the smoke control system! Additionally, there are fans which pressurize the stairwells to keep smoke from entering into them while people are exiting.