Posted by caterpillar guy on September 28, 2019 at 10:53:45 from (47.26.95.42):
In Reply to: Tractor Shed, Run-in posted by Farmall 504 on September 27, 2019 at 09:52:25:
A lot depends on the material. We have some places we used 20 foot 2x12's for plates then set the rafters on them at 3foot spacing and been there since the early 80's with no sag nor springyness. They are full rough cut planks with the same typs of rafters not trusses just a 2x6 for a rafter. The plates are on each side of the pole. We put a scab plank on the joint with a 5/8th's bolt through the pole and planks. I am looking at putting a single 4x12 in between a couple of 2x10 plates to widen a pole spacing in an older polebarn we have now that needs a pole replaced so I can have a bout a 25 foot opening width. All lumber here used is Oak,Ash,Elm. I would not be afraid of doing a 20 foot span with 2x12's in Oak,Ash or the like. I would use one on each side of the pole and bolt it with the scab plank across the joint though. then put some bolts through the scab and the plates. 3/8th's for that would be good through the pole 5/8th's.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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