Custom Fixed Angle Elbows

[dmerrittHQE4L]

Hello,

I have been struggling trying to make these fixed angle elbows that can be stacked ontop of each other. They come as 22.5 deg fittings and if you want a 45, then you use 2 back to back. I typically only use (3) sizes, 8/10/12in. Any guidance would be greatly appreciated.

[hmunsell]

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@dmerrittHQE4L wrote:

I have been struggling trying to make these fixed angle elbows that can be stacked ontop of each other.

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What is it that you're struggling with? You haven't mentioned an actual problem your having 😁.

[dmerrittHQE4L]

@hmunsell I have tried altering existing fittings elbows. I can get the general shape to work, but revit does not respect the 22.5 deg portion. In pipe settings I only have 22.5 selected and it will still create a 45/90 deg elbow. See snip attached.

[iainsavage]

There is possibly something in the elbow family which only allows those angles to be created.

Please upload the family for examination.

[dmerrittHQE4L]

@iainsavage Here you go! This is a modified class 150 flanged elbow.

[iainsavage]

I get it working okay.

It draws at 22.5 degree with the angle options set to just that choice.

Revit will always add a piece of pipe between two elbows but you can delete that pipe and then drag one elbow on to the other.

For some reason though which I can't yet explain it also draws at 45 degrees even though I only have 90 and 22.5 choices set.

BUT if I try to draw at 90 degrees the family breaks and this seems to happen at any angle greater than 49 degrees:

I think you've maybe done something to the family to cause this error which comes up (in the family editor) as "Can't keep elements joined" and "Can't create sweep".

[hmunsell]

in the properties, you can lock the angle to 22.5 by entering it in the Formula. Then add that elbow to the routing preferences of the pipe type.

 Revit will not automatically add 2 fitting back-to-back though. To make a 45, using 2 x 22.5's you would need to place one at 22.5...

• then get out of the pipe placement.
• add another 22.5 fitting manually.
• then continue drawing your pipe from the second fitting. 

Another option would be to let Revit place a 45, then delete it and replace it with 2 x 22.5's.

•  

[HVAC-Novice]

Couldn't you make a 45° elbow type an with some visibility settings add that flange that separates the two 22.5° pieces? 

I assume you want to make a 45° turn but want it to look like two 22.5° fittings. The contractor then uses two 22.5°, even if Revit modelled it as one 45°.

And why do you want to do that? Are 45° not available? I also wouldn't worry too much about modeling it to too much detail. 

I apologize if I misunderstand what it is you want to accomplish.