On engineering my own trusses I guess I been doing it all wrong. I've seen engineered trusses fail. I've seen the supposed best trusses fail. After reading all below there was BUT on reference to the use of graded lumber, #1 and/or #2 best. Personally the choice of wood is 1/2 the most important part of my truss. Fir being my favorite, spruce is way down the line, and yellow pine an aged old no-no. (yellow pine becomes directly proportionally more brittle with age) As for dimension size only one criteria applies, "No plank is any stronger than the the wood left around a KNOT!!! To me he weakest link (yes-link) in any truss is the chord. I've seen trusses made with 2"x6" rafters and 2"x4" chords. Personally I find this rather dangerous. What the? The chord holds the whole truss together! As far as gussets are concerned I put my trust into play wood gussets (no less than 1/2" thick) waterproof glued, a few galvanized nails for immediate tacking and the then cadmium plated heavy duty all purpose screws to finish. I've never had to ever repair one of my trusses. Can't say that for those engineered and factory manufactured. My construction on the job framing, trim, and commercial apprenticeship training started in 1948. At the latest rate of inflation this is my $0.04 worth. Fernan
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Today's Featured Article - Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
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