The lack of sprinkler systems in the Burnsville apartment complex that burned Monday is common in hundreds of apartment buildings across the metro and the state.
"I would say with a fair amount of certainty that there are more [apartment buildings] without sprinklers than there are with," said Jon Nisja, a fire code and data supervisor with the Minnesota State Fire Marshal's office.
The Burnsville structure, built in 1969, was exempted along with other existing multi-family dwellings when a new fire code was adopted in 1989. The code requires new apartment buildings with three or more stories or more than 16 units to have sprinkler systems, Nisja said.
Few states had far-reaching fire codes until the 1970s, when the federal government issued a landmark report strongly urging the adoption of fire and building codes. Until then, only high-risk buildings -- including hospitals, schools and theaters -- were governed by safety codes.
By all accounts, the three-level, 64-unit Burnsville complex, Burncliff Apartments, owned by the Goodman Group, was in compliance with city and state codes. Monday's fire left more than 100 homeless.
The effectiveness of sprinklers in preventing injuries and serious damage from fires was addressed in a 2005 report by the National Fire Protection Association. It concluded that fires in apartment buildings with sprinklers saw 81 percent fewer deaths and nearly half the monetary damages of those without sprinklers. In Minnesota, statistics collected by the state since 2000 are even more dramatic, showing a tenfold difference in deaths by fire between multi-family housing with sprinklers and buildings without them.
However, efforts in Minnesota to retrofit old buildings have stalled due to the high cost.
There was an attempt in the mid-1990s to require sprinklers in all high-rise office and apartment buildings. Mid- or low-rise buildings, such as the Burncliff Apartments, that were already grandfathered would have remained exempt, Nisja said.