Placing trusses on a severely out of square building
I had to answer. I had a Sportster and stripped it down to the frame and rebuilt everything. I did everything myself except bore the jugs out and redo the valve seats. New wire harness, dual fire ignition system, the works. I also stroked it. The torqiest thing I have ever ridden. Thing shook like crazy doing 80mph, but from the line, I had to hold on for dear life.
If your structure has one long side, just install the trusses as normal starting at the square end. When you get back to the angled end, try putting a truss close to the end (still square with the rest), and then frame out a drop top gable end (flush with the wall below) by hand and extend a rafter ladder out (green framing). Then when you look down on the roof, you have a true rectangle. I wouldn't mess with trimming the sheet metal roof panels to try and compensate.
Here's an example. The red framing is the drop top gable. In your case, one end of the drop top (attached to the 29.5 foot side) will be closer to the truss, and the other end (30.5 foot side) would be closer to the fascia board. You maintain your trapezoid footprint on that unsquare end, but you get a rectangular roof plan.
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Last edited by Aggie67; 04-20-2010 at 12:55 PM.