Just standard shingled roof. Yes all trusses are made with 2x4's. Most people I talk to are surprised because they all have 2x6's and a much more open design. Makes sense that you can have a more open design since the stiffness of a 6" inch wide board is going to be much higher.
Thanks for explaining the load path for the existing design that makes sense. If I was just replacing the middle trusses like this, wouldn't this combat the roof rafters from sagging in a similar manner? I understand its not geometrically symmetrical BUT that doesn't mean it can't somewhat similarly distribute the loads and not flex too much in any location.
I can solve the systems of equations to obtain the loads at each point but then what? I feel like what one would need to be looking for is max deflections at key points and them having to be smaller than some threshold per some code.
You're not kidding. I've done a whole lot of that. I had a garage fire half a year ago just moved back in. I've probably donated several truck load full of shit. Several other truck loads of burnt shit to the dump. Still, there are some things that remain that need to go in the attic b/c my little yard isn't big enough for a proper shed.
No wall under the center where all the trusses meet. Under this is a two car garage. I would definitely leave the center 2x4's alone too if I did it the way I was thinking.
I have the queen web config and I'd kind of want to morph that into a hybrid attic configuration except it would have a center post unlike the design below.