I have done some calcs and believe the metal roof deck is 30% overstressed with a 3 span cont. condition. The joist nearest the wall is about 20 % overstressed. This includes a revaluation of all existing dead loads since they were originally overestimated.
The design engineer says that he looked at it and he thinks he can justify saying that it is OK.
Do I leave it here, since this is his responsibility, or do I talk to him again and try to convince him that it is more overstressed than he thinks?
Do I have any obligation to inform the Owner or local building department?