Dimension String Witness Line Will not Remove Correctly

[DWarren_CPL]

So I have a project where my users are reporting that they cannot adjust the witness lines on a plan. I'll attach a Screencast to show the behavior in question, but in summary here's what's going on. This is turning into a blackhole for time for my users. Any idea what's going on?

Workflow---

1) dimension string in-place needs adjusting

2) pick the dimension string and activate the add/remove witness lines

3) Pick the core face to remove witness line from the dimension string

4) Revit inserts a 0" dimension

5) Escape out

6) Select the dimension string

7) Manually replace the dimension string on the object it's already pointing at

😎 Now the add/remove witness lines tool works as expected.

[DWarren_CPL]

Note: The site shows all my screencasts as pending and will not allow me to insert them into a post. Hopefully this link helps:

https://knowledge.autodesk.com/community/screencast/a902a45a-55d9-4fde-bfcf-191f211039f1

[barthbradley]

Could be a number of reasons. First, are you sure the witness lines are pulled from the wall?  

[MostafaElashmawy]

After choosing edit witness lines, hover over the line you want to remove then click tab then click the line.

I think there are two lines at same place.

[barthbradley]

..temporarily isolate walls and dimensions in view.  Any dimensions missing that should be visible?  Those that don't show, are the ones not pulled from a wall. 

FWIW: Use TAB-Select to cycle through overlapping elements.

[barthbradley]

out of curiosity, @MostafaElashmawy-- would I get busted by the "Spam Police" for that last post of mine?  I'm really not sure.  😉

[ToanDN]

The dimension may not be pulled from that wall. Select the wall and see if the dimension turns blue. If not, then it is from another element.

[DWarren_CPL]

Thanks for the recommendation. Unfortunately, the add/remove witness lines tool modifies dimension strings by selecting references. Trying to select the witness line itself has no effect with this tool activated. 

[DWarren_CPL]

@barthbradley yes, i can confirm, the project team has shown me how they were laying out their dimension strings. They're all competent Revit users. Is it possible to accidentally select a reference below the floor or above the cut plane? 

[barthbradley]

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@DWarren_CPL wrote:

Is it possible to accidentally select a reference below the floor or above the cut plane? 

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It is possible to have overlapping elements and mis-select.  

[DWarren_CPL]

Tried this. When I isolated just the walls and the dimensions this is what I got:

I put a red override on all the dims visible so it would be apparent when I toggled it back off what was missing. You can see two strings that were left off... that being said.. these two strings - are behaving as expected. Normal add/remove witness line behavior.

[MostafaElashmawy]

I think you didn't get my point.

I think there is two lines at same location (edge of wall and a grid line for example or any other line) and your original dimension is referenced to one of them while the zero dimension is referenced to the other one. That's why clicking tab will switch between the available lines till you select the correct line.

check below video and note what I mean.

https://knowledge.autodesk.com/community/screencast/8fb6269e-ab1e-4283-98b3-c887b4233e63

8fb6269e-ab1e-4283-98b3-c887b4233e63,640,620

[DWarren_CPL]

@ToanDN so assuming I am interpreting your message correctly, this is what I get when I select one of the dimension strings that are "misbehaving". While yes, the dimensions "turn blue" they do not turn into temporary dimensions.

[ToanDN]

Those dimensions can be pulled from the grid lines, curtain wall edges, etc...  That is why when you hide them the dimensions disappear.  Why don't you just delete them and re-add new dimensions and snap them to what you want?  

[DWarren_CPL]

I tried what you were getting at. Seeing if there was an errant line or something "hidden" in the same location as the wall. I even R-L Windowed to make sure there wasn't anything "hidden. There was not. This is what my selection returned. 

[ToanDN]

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@DWarren_CPL wrote:

@ToanDN so assuming I am interpreting your message correctly, this is what I get when I select one of the dimension strings that are "misbehaving". While yes, the dimensions "turn blue" they do not turn into temporary dimensions.

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No you did not interpret my post correctly.  I said select the wall you assumed the dimension was pulled from and see if the dimension turned blue.  I did not say select the dimension string.

By the way, look at the example below, do you know why one dimension turned blue and another (seemingly the same) did not?  because they pulled from overlapping elements occurring the same location.

[barthbradley]

I no longer understand what the issue is.  What are you trying to do in your Screencast?  

[DWarren_CPL]

While the samples I've been taking screen shots are part of the building. I'm seeing this behavior on hundreds of dimension strings. Yes, deleting them and replacing them is an options, but a rather timely one. Additionally, I think my project team might attack me if I tell them to just redo hundreds of dimension strings.

Project team spent most of yesterday placing these dimensions. 

[DWarren_CPL]

Thank you for the clarification. Here is what happens when I select one of the walls.

[MostafaElashmawy]

I have a silly idea.

May be your wall have a very small layer at that location.

A layer with approximately 0 thickness. (may be a membrane layer)

Would you please share the wall layers.