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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.
There is no known method of preventing the occurrence. of a lightning discharge . The purpose of a lightning. protection system, therefore, is to control the passage. of a discharge in such a manner that prevents personal. injury or property damage . The need to provide protection should be assessed in the. early stages of the structure design . Although no strict.