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 - A Belt Pulley? Really Doing Something? - by Chris Pratt. Belt Pulleys! Most of us conjure up a picture of a massive thresher with a wide belt lazily arching to a tractor 35 feet away throwing a cloud of dust, straw and grain, and while nostalgic, not too practical a method of using our tractors. While this may have been the bread and butter of the belt work in the past (since this is what made the money on many farms), the smaller tasks may have been and still can be its real claim to fame. The thresher would bring in the harvest (and income) once a y
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