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Thread: Miter a steel tube?

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    Miter a steel tube?

    I don't work with steel shapes much but have a curtain wall mockup project that requires one steel tube davit support. It is a HSS6x6 tube vertical created from a column family with a HSS6x6 horizontal created from a structural framing family for attachment to the floor beam. In a project how would one miter these two sections?

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    Add a reference plane where you want the miter to be. Then use the cut tool. The only thing is, you can't delete the reference plane later. If you do the miter goes with it.

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    Reference plane will work, but as highlighted above it wont move with the member and is easy to delete accidentially. If you do use a ref plane, naming it something is a good tip to make sure later down the track you can easily see why it is there

    Depending how many instances you have, you are best to make a family which accurately includes both members as nested elements

    But if you only have a few instances, another method is opening by face on each element

    The good thing about opening by face is that it hosts to each member, and if you move the member the opening goes with it

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    Place the two tubes perpendicular to each other, maybe using coarse detail first so that they display as lines. Change to Medium detail. Now > Modify > Column/Beam Joins. You will see a couple of arrows close to the tubes. Click on one of the arrows > Lock the join > Modify to finish.

    See illustration.
    Attached Thumbnails Attached Thumbnails Miter a steel tube?-mitering-tubes.jpg  

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    Quote Originally Posted by dzatto View Post
    Add a reference plane where you want the miter to be. Then use the cut tool. The only thing is, you can't delete the reference plane later. If you do the miter goes with it.
    I tried a RP and it worked fine on the vertical tube but the horizontal tube leaves behind the wrong side no matter where I select it to start the Cut process. How do I control which side stays and which side leaves?

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    Quote Originally Posted by Alfredo Medina View Post
    Place the two tubes perpendicular to each other, maybe using coarse detail first so that they display as lines. Change to Medium detail. Now > Modify > Column/Beam Joins. You will see a couple of arrows close to the tubes. Click on one of the arrows > Lock the join > Modify to finish.

    See illustration.
    when I try this after selecting the Beam/Column Joins both my column and my beam are greyed out with no arrow to select ??

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    Quote Originally Posted by Dave Jones View Post
    I tried a RP and it worked fine on the vertical tube but the horizontal tube leaves behind the wrong side no matter where I select it to start the Cut process. How do I control which side stays and which side leaves?
    I totally forgot about the way Alf posted. That would work best and is the easiest. I just started using that way a little while ago. lol


    Your post just beat mine. Maybe they have to both be beams or columns, not one of each?

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    Edit beam joins works well, when it works... Revit is pretty picky about how the beams are modelled and aligned. Generally it works well for beams at the same plane (the anyalytical line needs to be common)

    It doesnt work all that well for me for beam to column connections

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    Quote Originally Posted by dzatto View Post
    I totally forgot about the way Alf posted. That would work best and is the easiest. I just started using that way a little while ago. lol


    Your post just beat mine. Maybe they have to both be beams or columns, not one of each?
    well, I've got a beam and a column so it seems that the RP method is the way to go. I finally got it to miter correctly by moving the short offending beam away from the column, moving the mitered beam and RP back in place, then mitering the column. PITA but it worked. I can see where the Column/Beam join would work well for beams in plan or columns in elevation but beams and columns don't like each other...

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    Yes, Ben and Dzatto are correct in their comments. Dave, since I had seen an image of that mock-up project you were doing, because you posted it in Augi some day, I thought about beam to beam connection, which is easy with the Column/Beam Join tool.

    But unfortunately, yes, it's not easy when it is column to beam. To make it work, the column element would have to be a beam that has been rotated (and disjoined) in elevation view, as in this example. Then the Column/Beam Joint tool works easily again, displaying the arrows!

    Strange things come out of that factory sometimes!
    Attached Thumbnails Attached Thumbnails Miter a steel tube?-miter-column-beam.jpg  

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