spreadsheet for calculation of local dihedral angles according to AWS D1.1 Annex P and to ASCE pipelines 2008 and 2012dihedral angles.xlsx (1.8 MB)
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Thanks, I don’t know if I’ll use it, but, I’m a packrat and I will check how it’s written. I don’t mean to belittle the posting, but it is an interesting spreadsheet… again, thanks. I never thought about pipes having dihedral angles, only flat surfaces…
Welcome to the group.
Dik
Not quite related to the subject. I’m looking for a formula to calculate the perimeter of the elliptical shape produced when a circular cylinder intersects a plane on an angle. An example would be a round HSS section intersecting a flat plate or column web or flange. I want to calculate the weld area.
You seem to have a lot of information; can you provide such a formula?
Thanks,
Dik
@dik Sounds like it could be solved with analytical geometry and calculus. Some handbooks and references may have solutions already documented. Chords of a circle and such. I’ll look around Monday at the office.
Thanks… it would be appreciated… I was thinking that there would be a nice simple formula, but not so… If there is part of a welding procedure attached, it would be welcomed too…
Dik
Can you rough sketch exactly what you need? I’d appreciate it.
If I well understand : Hobert Welding Manual page 18 of the PDF file
https://mega.nz/#!NU1QHRBL!RTdKKpL1QK6HAQCDh6FAKC8bDpJnhkWqe_-7MG23hyQ
PS : no copyright. See https://www.eng-tips.com/viewthread.cfm?qid=371411
PS2 : of course it is approx formula
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@Latexman Thanks… I’ll take a look at it. On first glance, it is a solution to my problem. Thanks very much.
Dik
@pisani49 The book is very good and has a lot of useful information in it, on first glance. Will look at in during the next week. It, too, has a solution to my problem. I’ll set up an SMath program and post it later this upcoming week.
Thanks very much… I suspected you may have a solution from the type of posts you have been making.
Dik
Again thanks…
Dik
I made a comparative table of formulas posted by Latexman and Hobert : lengths calculated by Hobert are always less than others (the table shows the difference in %). Attached the xls file too.
Hobert ellisse approx.xls (13.5 KB)
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Thanks… careful, your engineering skills are showing… again, thanks.
Dik