The apex of the roof is usually the point where the two beams meet and slope in the opposite direction also known as a ridge. The universal beams are the structural components that hold the roof up. The two beams are connected with a welded plate and bolts. Above the universal beams are c-purlins connected to the beams with fly-bracing and welded cleats. There is bridging in between the purlins to avoid deflection of the purlins. Above the purlins in safety mesh and sisalation.