Soil assessment report, filling - additional costs?

Hello everyone,

we want to buy a plot of land and also have a soil survey available.

A driven core sounding has yielded the following results:

This means that about 0.5 meters are A = fill (in the text it then says "...consist of re-deposited sands with predominantly silty to strongly silty ...")
S = sand

Do we now have to expect additional costs with such a measurement? Does something need to be replaced?

Nobody understands these reports, do they?!

Thank you very much for your help!

Best regards
Jeff

The soil survey should also include a foundation recommendation. From this, you can more easily determine whether additional costs will be incurred by you.

My layman's opinion: the fill material has to be removed anyway for the gravel layer under the foundation slab.. That stuff doesn’t provide any support. Up to a depth of 2.8 m it is sand with some silt content. It could be sufficiently load-bearing. With the soil parameters determined, the structural engineer can calculate that. From 2.8 m depth onwards the soil is silty, so possibly not very load-bearing. A foundation at this depth (house with basement) could be problematic. Without noteworthy concerns, it is hard to assess. The groundwater level would require a waterproof concrete shell.

Hello,

unfortunately, I cannot open the inserted image ([Gutachten?]).

Regards,

Dirk

I presume the soil survey was created for the sewer construction, so there probably won’t be any foundation recommendations there. The reports might still be somewhat understandable, but the conclusions to be drawn from them require (considerable) expertise (and experience). Basically, filling is not a problem, but it would also be important to know how you plan to build (with basement/without basement). Regards K1300S

Hello Jeff,

No one understands such reports?!

So this means the report only concerns the planned roads, it was not created for your preferred property?

No one understands such reports?!

The geologist, that’s what he was commissioned for. In general, at the end of the report – before the various measurement results are attached with illustrations – there is a so-called foundation recommendation. This is also understood by the architect and can usually be explained to his client.

Btw. – if I’m correct that the soil report only concerns the planned roads, the presented report should not be the sole purchasing decision factor. Because it is quite possible that very different soil conditions will be found on the plot of land you favor; Roman shards wouldn’t be great either. Therefore, when financing the construction measure, consider reserves for additional foundation costs!

Rhineland regards