topic Re: Grips using a reference line in section view in Revit MEP Forum

Grips using a reference line in section view

Anonymous — Tue, 29 Jan 2019 21:06:38 GMT

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.

Re: Grips using a reference line in section view

ToanDN — Tue, 29 Jan 2019 21:11:30 GMT

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

Re: Grips using a reference line in section view

Anonymous — Tue, 29 Jan 2019 21:17:45 GMT

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

Re: Grips using a reference line in section view

ToanDN — Tue, 29 Jan 2019 21:23:28 GMT

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.

Re: Grips using a reference line in section view

Anonymous — Tue, 29 Jan 2019 21:38:20 GMT

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!

Re: Grips using a reference line in section view

ToanDN — Tue, 29 Jan 2019 21:35:55 GMT

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.

Re: Grips using a reference line in section view

Anonymous — Tue, 29 Jan 2019 22:11:15 GMT

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!

Re: Grips using a reference line in section view

ToanDN — Tue, 29 Jan 2019 22:21:36 GMT

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

Re: Grips using a reference line in section view

Anonymous — Tue, 29 Jan 2019 22:27:47 GMT

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