Back in the day when I studied architecture , we also learned about building materails . I forget the tables , but do know that red pine is not a very stong material , and 2 rough sawn 2x8 laninated on edge is much stonger than that 4x8 beam . My first house had 2x6 white pine floor joist and they all squeked and sagged , of course that was way before the building code was introduced.
The strengh is always in the web that's why I BEAM floor joist are so strong even though they only use 3/8 aspinite and 2x3 studs .
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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