I work maintenance for a big building. There are about 50 of us who work round the clock inside this building. We have guys that do most of the work outside and on the roof, and I was not one of those guys. It is a flat roof, and it is windy up there. I was only up there once to call a guy down whose radio was not working. I prefer being inside. Then I was tasked to fix an air handling unit up on the roof, and I had to learn the wind resistant demarcation path instructions and everything.
Up on the roof there are walkways that are laid down over the roof surface. They have upright posts with heavy square rubber bases that support chains. You do not step off of the demarcation paths, or go beyond the chains. Continue reading