We have a project in the exploration phase that is asking if they can transform an unused third floor/attic space in an Existing Apartment Building without adding sprinklers. They will meet all the other requirements if they go forward, but the sprinkler cost seems to be an obstacle. Some background on the building. Three story
In search of any reference to installing residential pv system and fastening metallic conduit to and distance required from underside of wooden roof sheathing.