Soil sample evaluation

Look at the groundwater level.

As a layperson, I still don't understand the connection. Could you explain it to me?

You should be able to get a reasonable groundwater well relatively cheaply.

Hello,

grmpf, now it swallowed my answer, so once again in bullet points:

The building ground consists of topsoil over sand, which in one area is characterized as silty to strongly silty down to a depth of 1.4 m. Groundwater was encountered in November 2014 in the exploratory drillings between the levels GW11-20014 ≅ +6.1 mNN and +6.5 mNN (approx. 2 m below surface). It is therefore to be expected that groundwater can rise to just below the surface after prolonged rainfall. The cohesive soil (loamy sand) present in part of the area tends to soften when exposed and penetrated by surface or interstitial water and is classified as medium to very frost-sensitive (F 2 and F 3). For road construction, reinforced base layers and the use of geogrids or soil improvement measures such as lime stabilization are to be planned. According to the recommendations of the DWA, the loamy sand present is unsuitable for infiltration of rainwater. The non-silty sand is well permeable. For keeping the construction pits and pipe trenches dry, closed water retention systems via wells or a vacuum system with flushing filters are to be planned. For the main backfilling of pipe trenches, well-compacting material (gravel sand) is to be used, which is to be installed in layers with a compaction degree DPr ≥ 97%. The building ground is generally sufficiently load-bearing for the planned single-family houses if treated properly. However, detailed soil investigations for the building are still required."

The soil is swampy down to 1.4 m; when it rains, it becomes swamp with ponds on top. For construction with a slab foundation, soil replacement down to at least 1.5 m depth is advised; for construction with a basement, a waterproof concrete shell (“white tank”) or houseboat is necessary.

The excavation pit will require water management (= pumping out).

Excavated material can no longer be reused. You have to dispose of it at high cost and buy sand for replacement (also expensive).

Development can become costly because the roads need special foundations.

In short: It will be expensive!

Best regards,

Andreas

So an example of how municipalities try to get all possible areas sold as building land.

I recommend founding as a houseboat with a variable entrance ramp.

I recommend founding as a houseboat with a variable entrance ramp.

I agree and say: TE, found your house elsewhere.....