Shujinko
Senior Member
I have a project with a hollow space between a new building and an existing building that is enclosed and not accessible. Is there a code requirement that requires there to be a smoke detector or heat detector in this type of hollow space? A contractor is saying there is a code requirement for this but I can't find it. If we do provide a detector we would need to make the hollow space accessible to access the smoke detector for periodic maintenance. Which code states this requirement, if any?