Garage roof question
My Garage is pretty old and I wanted to put in a bigger garage door, there is a ceiling frame about 8' high. If i put in a bigger door, when it retracts it hits the ceiling.
I wanted to just remove it but a carpenter told me to make sure that the ceiling isn't supporting the roof, he said he didn't look at it closely but from the way it sits it looks like something.
The joists run across the garage for about a ~20ft span, in the center there is one cross brace being suspended from the ceiling joists.
When i looked at where its connected to the walls, its barely connected. I have a few pics below.
How can i verify if the ceiling is supporting the roof or not? Thanks