I would go with the 4/12 trusses eliminating the center row of posts. Doubt there will be much if any difference in cost. In 1985 I built a hay barn that is 40 foot span trusses that has seen some pretty heavy snow loads without any sign of structual distress. It sure is nice to not have a row of post down the center. I did use trusses spaced on 4 foot centers with 2X4 sheathing spaced on 16 inch centers. Just let your truss builder know about the spacing, and he can engineer the truss for proper sizes of materials to use. Joe
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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