Concrete quality okay or defect - experiences?

I sometimes wonder what professions you all are in, because many just go through life completely naive and trusting, like a dachshund. In this case, one can simply save the questioner further effort; there is no need to also convince him that the pictures can be recovered...

It is completely baffling to me how someone can carry out a huge project like building a house and then not even take pictures of their own construction site or regularly visit and ask before a disaster occurs...

That may sound a bit harsh in detail sometimes, but it will certainly help more in the end than your wishy-washy advice, which is useless anyway because the disaster has already happened and the site manager has already made it clear that he "accidentally" deleted the pictures... so he knows this is crap, what happened there, and he will be damned if he initiates data recovery. Just the idea alone makes me have to hold myself back from laughing too loudly...

Oh, someone had one glass too many yesterday, so much babbling...

In the end, it remains the same. There are no pictures, the construction manager will know why he deleted them. Nobody will change that, not even any nice advice.
If you want to be hugged, you go to grandma, neither a lawyer nor any other expert, who will obviously be needed, will do that.

It’s kind of satirical, after the basement wall has been completely filled, to ask whether the basement was properly executed. Honestly...

Nope, it works without alcohol too, even if you probably don’t know that about yourself, I haven’t liked alcohol for years....... The OP has questions that may seem ridiculous to a pro like you, then just stay out if it annoys you. Just because you don’t get a word in at home doesn’t mean you have to flood the questioners here with crude ridicule. Often asked but still no detail or picture of your own masterpiece has been seen here...... probably not too far along with your own reference..... should we maybe help?

Amidst all the amusement that here, for once, someone other than myself is being reproached in a harsh tone, I can only advise the OP to accept the (if at least somewhat competent) suggestions of his lawyer to take a settlement course. With this construction – the OP even hints at having further problem points up his sleeve – there is apparently a multiple expert failure present (to which, in my opinion, the OP himself initially naively and negligently laid the groundwork). Anyone who left the ammunition gathering to a second party here can experience nothing less than a triple shipwreck in court – under such conditions, even a Hornberger Shootout inevitably turns into a Waterloo. Now, from my point of view, three specialists are required – by no means as substitute experts again, mind you: first, a damage assessor who sorts the problem areas into those salvageable and reconstructible with reasonable effort; second, an architect who obtains the permits for these changes, plans the whole shebang, and manages construction; and third, a financial advisor who moderates with the bank which parts of the secured property to be demolished will not be restored. I myself will by no means be part of this, for love of the profession I would not be willing to join such a Christian suicide mission for any money in the world and therefore ask to refrain from even such an application.

The alternative here would unfortunately probably be to let a possibly still restorable defective object deteriorate into a certain ruin, which would likely happen in case of renovation delay due to evidence preservation reasons. According to the previous descriptions (across the OP’s entire thread history), I suspect that even in the best case, without separating parts of the proceedings, the process will go through three instances (mind you, not until a judgment satisfying to the OP, but only until the realization of hopelessness).

Therefore, I see a chance for the OP in the settlement path to have "only" paid double the originally planned amount in the end. It won’t be cheaper – regardless of how much one morally assigns blame to the other parties involved (I recommend Gerhard Polt’s "Leasing" to those who think otherwise). In contentious proceedings, I see the presiding judge unable to avoid giving the OP a good dose of raised-finger reproach for contributory negligence. But as I said, if the lawyer is at least somewhat competent, I have probably just repeated his sermon.