If I’m designing a stairwell pressurization system. How do i know what the height limit is for the fans?
Hi all, I'm relatively new to the world of fire door inspection, but I do have formal training. I see a lot of old wood fire-rated doors with missing patches of surface wood veneer, and edge and surface cracks into the veneer. Also doors missing corner chunks. Can anyone give me some guidance as to what is acceptable, and what is not?