Building land: earthquake zone, underground class

Hello,

the two points mentioned are new to me. So I did a little research and found the following for our property:

Seismic zone 2
Subsoil class T

Furthermore, Wiki says about seismic zones: 0 (no hazard) to 3 (high hazard)

Subsoil classes
R: rock-like
S: deep-sedimentary
T: transition areas

Soil classes
A: unweathered rock
B: moderately weathered
C: loose rock

I am now wondering what this specifically means, i.e. what is possible / not possible / what additionally has to be done / what extra costs arise.

Can someone explain this or maybe provide something to read on this?

Thanks!

That says little to nothing as long as you want to build a single-family house or something similar.

Or what exactly are you interested in?

A geotechnical report would be much more interesting. What does it say there about the foundation?

Correct, it is about a single-family house, detached and with a basement. So I deduce from this that it is more relevant for larger buildings, but not necessarily for my project? There is no ground survey report yet. Thank you and best regards

No, from that you deduce that the interesting details cannot be classified so broadly. You need a soil survey of exactly the area where the house is supposed to stand (to the exact meter).

VG

K1300S

Hello,

So I deduce from this that it is more important for larger constructions, but not necessarily for my project?

For every construction project, including yours.

There is no soil survey yet.

Without a soil survey that deals exclusively with your property, you only know so far that the stone to be built later must be able to withstand seismic zone 2 (in the worst case). Only the soil survey tells you exactly if additional foundation costs will arise or not.

Rhenish regards

Thank you for the explanations, I now have a better understanding of this. I quickly couldn’t find an overview of the stones compatible with seismic zone 2, but I am specifically interested in whether a 36.5 Ytong is suitable or not. Thank you very much!