Evaluation of Geotechnical Report

  • Erstellt am 2013-03-04 12:03:24

STEILmann

2013-03-04 12:03:24
  • #1
Hello everyone,

My wife and I are currently planning the realization of a home of our own.
We have now found a plot of land in an area that we like and that is reasonably priced. The plot is located in a new development area that was developed around 2006 and includes 65 plots, of which currently 12 are still available, although 7 are completely uninteresting because after about 2 meters of lawn in the garden you look at a huge earth embankment. You almost feel oppressed.

Well, our potential plot is no longer sold by the city but is being sold by a private person. After some back and forth, we have agreed on a price. I will say it straight away - the plot has not yet been purchased, nothing signed etc. I asked the owner if a soil report had already been done.

During the development of the plots, dynamic probing tests were carried out throughout the area on behalf of the city. Exactly 3 of these were done on "our" plot.
The first one in the middle of the area where the house is supposed to stand, another on the boundary to the right of the plot, and the other on the boundary to the back of the plot.

To be clear right away: The soil report is more than concerning. This was also confirmed to us by a builder whose scope of service includes the groundwork (which is rather unusual, as most do not want to take on that responsibility).

I can read the facts from the report, but I find it difficult to assess and evaluate the financial consequences.
I can hardly make sense of the mentioned rock types etc., some key values, such as a recommended construction of the soil cushion with a 180 cm thick layer of crushed stone mixture, are very daunting. (The builder said the normal case would be about 50-60 cm.)

Now I wonder if I can upload the soil report here without any issues or if that is not lawful? If yes, I would be very grateful if someone who understands something about this could take some time and give me an objective assessment.
 

Bauexperte

2013-03-04 12:21:03
  • #2
Hello,

Are these points enough for your BT?

Strictly speaking, there is no "normal" case, as every property has different characteristics. At first reading, however, I would say that (almost) a complete soil replacement has to be carried out. Width and length of the house body x 1.80 m – that comes with considerable additional foundation costs.

Why don't you discuss the contents of the public report with your builder? The requirements can be clarified better in a one-on-one conversation than via a public platform like this. Incidentally, I doubt that anyone here has the time to read the entire report.

With Rhenish and finally sunny greetings
 

STEILmann

2013-03-04 12:34:24
  • #3
One property developer also said that for a correct assessment, a soil survey with at least 4 dynamic probing tests at the respective corners of the future house would have to be conducted. However, I would be reluctant to sink ~1500€ into the void just to then hear what is already stated in the existing report. I want someone who has some knowledge of the subject to take a look at the report and give me an assessment. Can I also contact the geotechnical laboratory directly, the one that created the report back then?
 

Bauexperte

2013-03-04 12:36:50
  • #4
Hello,


Of course. However, you will need to explain the reasons for your questions.

Best regards from the Rhineland
 

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