Abstract: A perimeter safety system used in pre-engineered metal building or roof system construction. The perimeter safety system includes a plurality of perimeter safety stands. Each perimeter safety stand has a main leg, a lateral support leg, and a perimeter leg. The lateral support leg and the perimeter leg may also be telescoping. The lower end of the main leg, lateral support leg and perimeter leg are each affixed to a panel foot. Each panel foot is capable of being detachably secured to a substructure and capable of being positioned between corrugations of an exposed fastener roof panel or detachably secured to a standing seam of a concealed fastener roof panel. The plurality of perimeter safety stands are interconnected with safety lines.