As it happens, a couple of weeks ago I was taking cover under a recently built, metal roofed (but otherwise open) dog park shelter from heavy rain, which I feared might include a bit of lightning. (Fortunately, it didn't, as I hate being outside during storms.)
So it's of interest to note in this article about lightning at The Conversation ends with this:
A lightning rod invented by Benjamin Franklin in 1752 is basically a thick fencing wire attached to the top of a building and connected to the ground. It is designed to attract lightning and earth the electric charge. By directing the flow through the wire, it saves the building from being damaged.
These Franklin rods are required for tall buildings and churches today, but the uncertain factor is how many are needed on each structure.
Furthermore, hundreds of structures are not protected, including shelter sheds in parks. These structures are often made from highly conductive galvanized iron, which itself attracts lightning, and supported by wooden posts.
The new version of Standards Australia for lightning protection recommends such shelters be earthed.
Next weekend, I shall check to see if I can tell if "my" new shelter incorporates this.
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