> For the complete documentation index, see [llms.txt](https://docs.enercalc.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.enercalc.com/efr-user-manual/calculation-types/working-with-beam-calculations/beam-parent-child-relationsh/change-warnings.md).

# Change Warnings

How adding child beams with copied reactions triggers load-path change warnings on the supporting girder calculation.

{% hint style="warning" %}
**NOTE:** For parent/child management, the terms “Add” and “Remove” describe the creation or removal of a conceptual relationship between the parent element and another existing element in the Revit model. These controls do not create or delete actual elements in the Revit model or calculations in the `.EC6` file.
{% endhint %}

As an added benefit for the design engineer, load path warnings are produced automatically when the addition of child elements WITH copied reactions impacts the behavior of an existing calculation. The supporting girder designed above is an example of this. If the three child beams removed above are added back with copied reactions from the parent, the supporting girder will toggle to a warning state (orange) because new load has been added that was not reflected in the previous run of the SEL calculation.

![](https://4249100372-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgHVzpA9PT0VcuNGp6j39%2Fuploads%2Fgit-blob-0efba8fdf11b72211114ab0554e5927cfc3780f7%2Fclip0467.png?alt=media)

![](https://4249100372-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgHVzpA9PT0VcuNGp6j39%2Fuploads%2Fgit-blob-f8955d56de4c4434eba233357f8b495f53f79411%2Fclip0468.png?alt=media)

After the addition of new child beams that include reactions copied from the parent, re-launching the girder calculation will allow the user to directly view the reactions.

![](https://4249100372-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgHVzpA9PT0VcuNGp6j39%2Fuploads%2Fgit-blob-069a5a4fa087984cdccc6a60fbbaf02996b5cc77%2Fclip0469.png?alt=media)

![](https://4249100372-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgHVzpA9PT0VcuNGp6j39%2Fuploads%2Fgit-blob-9feb6e1f463789174406e4bd1cb6f5814b75e5bd%2Fclip0470.png?alt=media)


---

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