I have designed a few trusses in the past and these just look underdesigned. The lower chord (the ones pulled apart) is in tension and wants to pull apart -- just like they did. It has nothing to do with the support walls and everything to do with the roof load. Either snow or wind or probably a combination, just overloaded those lightly designed trusses and the weakest link broke. Just pull them together and put on adequate splice plates, like about twice as long, and things will be fine.
The trouble with the local codes boys is that they are cookbook engineers and have never really designed anything so have no experience to judge with. If their book has a misprint all is lost. So much for government control of everything in our lives. They guy that OKed that truss is not there to take the responsibiliy I bet!
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Today's Featured Article - An AC Model M Crawler - by Anthony West. Neil Atkins is a man in his late thirties, a mild and patient character who talks fondly of his farming heritage. He farms around a hundred and fifty acres of arable land, in a village called Southam, located just outside Leamington Spa in Warwickshire. The soil is a rich dark brown and is well looked after. unlike some areas in the midlands it is also fairly flat, broken only by hedgerows and the occasional valley and brook. A copse of wildbreaking silver birch and oak trees surround the top si
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