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Lightning protection systems. Lightning can easily damage a number of different building materials, and the large electrical currents can cause fires within the interior or even side flashes. Side flashes are small explosions of highly pressurized, super-heated air that occur inside the nooks and crannies of structure materials.
The location of the most vulnerable places on the. structure to be struck by lightning is the first step on the. design of the external lightning protection system. Traditionally, the Rolling Sphere Method [1] has been. used to locate of the probable lightning strike points on. buildings.