Thanks boys for the answers!
Oldestguy, youre right that everything sounds like a hokus-pokus thing. I am not in the position to point out probable errors, I just have to figure out these variables, which seems to be mission impossible (I have asked for additional information on their methods)...
Greetings,
I have received results of Cone penetration test, and observing the notes, I saw a formula that was unclear to me (see link).
Reading through geotechincal literature, I was not able to find this formula shown on the photo(geotechnical engineering is not my area).
On the paper, soil...