Grips using a reference line in section view

[Anonymous]

Hi guys,

I have two things I need help on.  

First - For some reason I am not able to create a reference line within the revit family to allow me to drag the reference line up/down in a section view because it is not visible for some reason. I think it's supposed to be fully constrained in order for the grip to show?  Also, I associated it to an instance parameter. Not sure what I'm doing wrong.  It's been awhile.  I have created a trapeze with the grip and it seems to work fine in the past.

Second -  Revit does not appear to have allow you to create a parameter that reads into the offset or elevation of a family.  Has anyone been successful in getting that offset distance from reference level?  Thanks in advance.

[ToanDN]

I think I know the answer but like to see your family in order to confirm it.

[Anonymous]

That sounds encouraging!  Here is a simple block family and a working trapeze family that I updated.

[ToanDN · Accepted solution]

Yes, just as I expected.  You need to TAB to change the dimension to the reference plane, not the Level.  Then assign an instance parameter to the dim.

See attached.

[Anonymous]

Wow.  It was that simple?! LOL  You're my savior, Toan!  So if I have 3 hangers (on a trapeze family) and wanted to individually control each all thread hanger, I just need to create 3 reference lines, then?  I'm attaching one I'm working on. Thanks again! 🙂

I tried it, but only one grip shows.  Is it because I'm referencing the same reference plane, I wonder..?  I uploaded the updated family.  Please check and see if you can see my error. Thanks, Toan!

[ToanDN]

Yes. 3 reference lines and 3 instance parameters. Always use a reference plane, not Level, for the witness line for the dimensions in order to show the grips in project.

[Anonymous]

Toan,

I wonder if you can look at the new trapeze family that I just uploaded.  It's got the same name.  I'm trying to create 3 separate grips, but still not working.  Thanks!

[ToanDN]

You are using parameters driven by formulas for two of the three.  I changed them to regular parameters then they all work.

[Anonymous]

Nice!  Thanks a bunch, Toan.  I'll work with the formula later, but this works! 🙂