The safest house is one built according to all the rules of art with an equipotential bonding system, with lightning conductors and for the highest lightning protection class.
Of course, you should not build on or near iron-rich mountains.
It can never be completely lightning-proof, but if you have proper equipotential bonding in the slab, you have a good foundation. Wood is better than concrete since concrete contains reinforcement. But wood is worse if you get a direct strike. A metal roof connected to the equipotential bonding system is better than paper as it directs the stuff away from the house.
There is a whole science about equipotential bonding and lightning protection, a subject I've only touched upon through work. However, we have guys who are experts at it.
Of course, you should not build on or near iron-rich mountains.
It can never be completely lightning-proof, but if you have proper equipotential bonding in the slab, you have a good foundation. Wood is better than concrete since concrete contains reinforcement. But wood is worse if you get a direct strike. A metal roof connected to the equipotential bonding system is better than paper as it directs the stuff away from the house.
There is a whole science about equipotential bonding and lightning protection, a subject I've only touched upon through work. However, we have guys who are experts at it.
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A house built like a Faraday cage maybe.....
I heard (read) about lightning rods attracting lightning. And then the risk of fire/damage would increase. When the charge reaches the lightning rod, it would apparently continue into the ground and maybe into an electrical cable or water pipe. Not a good idea to take a shower then!
All conductive parts with a surface area larger than 5 cm2 should be grounded if one is to be very thorough when a foreign conductive object passes through the room (e.g., reinforcement in the floor or walls, etc.). If lightning rods are installed, this should be done according to the specified protective distances from conductive parts in the construction. Depending on the lightning protection class, a grid should also be placed on the roof and walls. In other words, in practice, you build a Faraday cage.
I recall that the standard for potential equalization and lightning protection is roughly 6-700 pages or something of that magnitude. It's a jungle, and it's difficult to delve into if you don't know what you're after. It's hard to draw general rules.
I recall that the standard for potential equalization and lightning protection is roughly 6-700 pages or something of that magnitude. It's a jungle, and it's difficult to delve into if you don't know what you're after. It's hard to draw general rules.
Here you can find most things, they are among the best in Sweden at this...
http://www.obo-bettermann.com/se/pdf_kataloge.shtml#tbs
http://www.obo-bettermann.com/se/pdf_kataloge.shtml#tbs