Civil engineering works - higher costs

You will need excavators etc. later for the exterior facilities. Arrange it with him like that and lower the price a bit and that's fine.

How would you proceed in this case? What would you agree to, or what compromise should be found here?

One can imagine a financial split.

And now I'm supposed to say: Yes, let's just do 50/50 and that's that?

Your solution is already there.

That should of course not be the goal. Well, let's see how the conversation goes. If no proper solution-oriented approach is pursued, then the bill simply won't be paid for now - that's it.

I have the impression that you are rather looking for approval of your position than an exchange on what others would do in this case.

This went wrong due to a lack of communication - however definitely on the part of the civil engineering company

On a Friday evening, the representative of the site manager (the site manager was unfortunately on vacation) was supposed to come by for a discussion with the general contractor on site. During the appointment, he called and said he could not come... So, on the phone, we then discussed everything further together with the general contractor and the structural engineer. It was said all the time: "For him, it is clear what is supposed to happen."

From the description it is clear that no proper clarification of the order took place. This is the responsibility of all parties involved. As a client, being satisfied with a "it is clear what is supposed to happen" and not asking clarifying questions is a communicative risk that lies solely with the client. "The other is to blame," "I am right" kindergarten stuff.

which I absolutely will not address, as it is not acceptable to me this way. I still have enormous additional costs and a substrate that is causing me problems afterwards.

I’ve been reading along a bit, but wasn’t it only about €3000? That’s only 1.5 for both parties. If that’s already a problem, then good luck! Much larger unexpected additional costs are coming. Be glad about the friend price and that the additional costs have stayed within limits.

The fact is: errors on the part of the civil engineers – why should I pay even 1 cent of that?

I still can’t see a real error. At most, a lack of coordination. Keep in mind, the company does civil engineering for major projects and the motto is “crane sites must be compacted.” On a larger scale it’s quite common to gravel the access roads and work areas. It doesn’t serve anyone involved if craftsmen or other construction vehicles get stuck there.

For the further course I can only advise taking a step back and reconsidering the situation as unemotionally as possible. Many more issues will come that are more (cost) critical!