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Forums >> Revit Building >> Technical Support >> Dimensioning to Family Linework

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Mon, Feb 21, 2011 at 7:55:41 PM | Dimensioning to Family Linework




Joined: Thu, Jun 29, 2006
23 Posts
4 Stars: 1 Votes

Revit 2011

I've created an annotation family to show a north arrow that disignates true north and plan north (this is to match a client's Acad standard symbol).  What i'm trying to do is dimension the angle between the two (again, this is needed to match the client's standards).  Ideally, there would be a label in the family that would automatically calculate and display the angle between the two (<90 degrees) but i am having trouble doing this since it seems to over-constrain the two parts of the arrow (each a separate family).  I'd be willing to settle for being able to put an angular dimension on the family in the project into which it is inserted, but the dimension will not snap to my linework in the family.  If I add lines or reference lines to the family, they seem to lock their angle to the cardinal directions and again over-constrain the family.  

Attached is my family file and a pdf of the standard i'm trying to match.

I've spent way too much time on this, any help on potential solutions would be appreciated.


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Tue, Feb 22, 2011 at 9:20:20 AM | Dimensioning to Family Linework



dgcad Avatar

Joined: Thu, Mar 17, 2005
1231 Posts
3.5 Stars: 36 Votes

Can you not just add a strong reference plane in the family and then use the 'TAB' key in the project to select that reference plane for your angled project dimension?



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Wed, Feb 23, 2011 at 11:24:36 AM | Dimensioning to Family Linework




Joined: Thu, Jun 29, 2006
23 Posts
4 Stars: 1 Votes

Nope.  The dimension will not snap to the strong reference in the project file, regardless of whether or not the reference line is drawn in to the 'top' family or into the sub families.  Inserting the reference line into the top family actually constrains the dimension in some weird way (i think it is relating to the default reference plane) which causes the two components to get all out of whack when the rotations are adjusted in the project file.


Thanks for the input, though.  Any other suggestions would be appreciated.

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