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Thread: Pipe bending question

  1. #1
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    Pipe bending question

    On this job we are doing theres a lot of structural steel posts on the inside corners of walls. They are just getting drywall glued to them ive been underbending 90s and then bending it to a true 90 from the front so like two 30 degree bends with a kick my problem is is i dont know how to calculate that for shrinkage or even know how far to make my next bend. Is there a name for this bend and a calculation?if its a 45 bend i put in it could i just measure it like an offset and do 1.5x the distance i need but how would i calculate what i gain.

  2. #2
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    Jul 2007
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    I call it a 90° bend with an obstruction. There's different formulas to use if the obstruction is round, square or rectangular. I cheat and us an app called Conduit Bender Elite. IIRC, it's a paid app, but it's worth the money in that you have a visual graphic to go by on the screen, and just have to tap to enter the variables. It won't return any gain, however.

  3. #3
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    Don't have your answer, I would make some marks on trial piece or pieces... when I find what works (and see what the shrinkage was.... Isn't that a Seinfeild episode?....) I would duplicate those measurements and bends..Sorry, know it's not what you were looking for.
    " I'm at a crucial part of my painting "...........Monika Danneman

  4. #4
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    Pipe bending

    I think this solution is working only 90% pipe bending solution not 100%

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