hello david
thank you for your reply,
I have read the 1267 guy, but I believe it is very complicated.
I found also other types that make the coupling to ground and a basement (like 1256 AND 1244 MODEL). I want to simulate a cellar whose height is 1.3 m below ground and 1.5 m above the ground and I want to know what type responds well to this need (type 1244 or 1256 type).
Thank you