I don't know the specifics for thread parent, but on many construction projects there is only one engineer, and even that engineer may be a sub to an architect.

I don't know the specifics for thread parent, but on many construction projects there is only one engineer, and even that engineer may be a sub to an architect. In my experience, architects are offended at the suggestion that they check the work of engineers, and engineers are offended by questions from clients. So, entirely due to the emotional preferences of the "one person", that one person is really totally responsible for a great deal.