I have a problem and need some advice. I'll try to explain the best that I can. I just purchased a cabin in N.Y. It is 20' deep by 25' wide. The roof sysytem was built with 2x4 trusses. The first 10' left to right by 20' deep are 2 bedrooms(10x10 each) with intact trusses overhead. The next 15'(left to right) by 12' deep (Living Room) has trusses with the bottom chords cut to vault the ceiling. THe previous owner sistered 2x8's along side the 2x4 truss rafters to the peak, there is no ridge beam or rafter. Behind the living room is the bath(7' wide x 8' deep) and the Kitchen (8 wide x 8 deep). The roof pitch is 5/12.
My plan is to install rafter ties 1/3 up from ceiling heighth (2x6) and 1/2 inch plywood gusset at the ridge to correct this issue. Is that enough? Any other thoughts? Can I leave the intact trusses alone?
Also, there is a beam running from kitchen through bath on top of bearing wall that has the opposite side truss chords that he cut attached to the beam. Any help would be greatly appreciated.