What is the risk of a lightning strike to a high-rise building with antenna equipment installed?
The risk for lightning strikes and damage to a structure are best determined using the National Fire Protection Assoc. NFPA Standard 780 – Annex L. This provides a mathematical model to make a determination. The Annex considers the effective area of a structure for lightning strikes, the lightning frequency for it’s locale, and the potential for loss based on construction, contents, and occupancy. Using the above you can determine the need for lightning protection on a high-rise condominium. We would suppose there is some minor difference in height between the building with and without the cell phone antenna, but doubt that this will make much difference for comparison. There is generally no more or less incidence of lightning attachment to structures that do or do not have lightning protection systems. Lightning is going to strike so many times on average in a square kilometer each year. However, if you have a complete lightning protection system, then you aren’t concerned about light
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