RichM1

Well, I'm working with the owner of the house, who is also a GC with almost 40 years of experience. We're gluing and screwing the 2x6 rafters to the existing 2x2 trusses+gussets, then cutting out the truss parts that extend below the rafters. It does seem like a wide span to me too, for 2x6's on a 2/12 pitch (I actually re-measured the slope), especially given the walls are 4" not 6" as well. The length of the wide area is... ok gonna go measure that lol... 16'. So there's a 16' stretch in the front where there will be some amount of outward pressure on a 4" exterior wall. There is no code or building department here, so it doesn't have to pass inspection... it just needs to not collapse.

Thank you Mick for your long response and drawing that up! The issue I had creating trusses was trying to get rid of the webbing and specify gussets instead - it has the gussets made from paneling. I thought maybe if I used rafters, I could then add in the gussets manually... the one rafter setting I couldn't figure out how to change was rater depth determined by roof size. I'm still messing with it. The CAD drawing is accurate to 1/4 inch or so, changing that to a solid and replicating it would probably meet my needs, but I haven't had time to explore that option yet today.

Summary: We're creating a vaulted tray ceiling in a house that started as a double-wide mobile home. I want to model the existing "trusses" so that I can figure out how to do the rafters to frame out the new ceiling. I cannot figure out how to do this though. Details: This house started out as a double-wide mobile home. It's been remodeled several times, huge portions added, walls rebuilt in places, rooms moved, walls removed. But the roof structure through the middle of the house is a 2.5/12 pitch, framed as follows: 2x2 rafter, 2x2 joist, 16" OC, with 12" pieces of 1/4" paneling used as gussets every 12". The tall wall has 1/2" plywood as a ridge beam. I attached a drawing that shows each side. I tried changing the rafter and joist settings to 1.5" x 1.5", but it insists on building roof framing with 6" rafters floating above the walls, and framing the tall wall with studs that are in the room wall below. I tried to manually draw the framing in like the CAD detail drawing I attached, but I can't figure out how to rotate the 2x2 rafter to the 2.5/12 pitch angle. I figured I'd draw one "truss" manually, and then replicate/copy it across every 16". But after about 6 hours (admittedly I'm new to this app) I still couldn't figure it out. I put both sides together, and added the 2x6 rafters and 2x4 cross brace. Then we plan to cut the trusses back flush with the rafters and brace. The wall will be coming out of the middle. There's no code here, unincorporated county, so no building inspection to send this through. Is there a way I can take this CAD drawing and use it for the actual rafters - extrude the 2D shapes into 3D?