Residential, Residential High Rise Firefighters, sprinkler system stop sixth-floor condo fire (St. Petersburg, FL) March 9, 2012 viking210 When firefighters arrived on the sixth floor of the 10-story building, they saw smoke in the hallways and finished off the fire within minutes. The fire was caused by a box left on a burner that had been inadvertently turned on. 200 residents live in the building. No injuries were reported and damage was contained to one apartment.