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Extending Unrequired Sprinkler System into Addition

Question asked by on Sep 16, 2020
Latest reply on Sep 21, 2020 by

We are adding some work bays onto a repair garage that is classified as Special Purposes Industrial.  The existing garage has a sprinkler system installed during a rehab about 5 years ago, but I cannot find a reason why it was required to be installed throughout - there are some storage rooms for batteries and flammables, but those have a 2-hr separation from the main garage/office area. I could see why the storage might be sprinklered, but I am not clear why it was decided to add sprinklers to the whole building.  The existing building is one-story, non-combustible construction and only about 4400sf.  The addition will also be non-combustible and add about 1600sf.  Do I need to extend the (unrequired) sprinkler system?