Architects' tasks...

I have a question about the structural analysis. My architect is now preparing the tenders for my house. I am of the opinion that he must commission the structural engineer before the tenders because the structural analysis is related to the tender, or am I wrong? My architect said that this does not have to be the case; he can also commission the structural engineer later.

With us, the tenders for the shell construction were also carried out before the final service of the structural engineer. One should trust their architect; if you can't, then you have chosen the wrong architect.