@Dirk:
A structural engineer for approval is present in large construction projects – in the single-family house sector, you hardly ever find one. And likewise, a four-eyes principle with architect-led construction – of course, you CAN do that and it certainly doesn’t hurt – except that it costs money. But it is not a rule and even experts tell you that having an expert involved throughout all service phases is rather unnecessary (I asked two experts beforehand).
But to present it as if the four-eyes principle is the rule? Sorry, that does not correspond to reality...
: I didn’t accuse you of being unprofessional either, it was meant with a wink because you said you couldn’t justify it objectively anymore.
This forum feels like it’s 90% general contractor / construction management or construction supervision contracts, and in those cases, having an expert ALWAYS makes sense – for architect-led construction, you practically never hear anything about that (in terms of construction supervision).