> 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/monitoring-and-change-warnings/changes-to-tributary-loads.md).

# Changes to Tributary Loads

How ENERCALC for Revit monitors cascading load-path changes between load-linked beams and girders and warns the user.

In addition to changes directly to applied loads, ENERCALC for Revit also monitors changes that have “cascading” effects down through the load path on multiple designed elements that are connected via “Load-Linking”.

This includes changes such as the following:

* Adding new applied loads to a designed beam supported by a designed girder
* Deleting existing applied loads from a designed beam supported by a designed girder
* Changing the magnitude of existing applied loads on a designed beam supported by a designed girder
* Changing the location of existing applied loads on a designed beam supported by a designed girder
* Changing the section size of a designed beam supported by a designed girder
* Changing the location of a designed beam supported by a designed girder
* Changing the support conditions of a designed beam supported by a designed girder

If working in “Real-time” monitoring mode, these changes will result in a pop-up notification to the user. As with other types of pop-up notifications, the user is presented with 3 choices. The framing system shown below is an example of “cascading” load path warnings due to multiple levels of “Load-Linking”.

![](https://4249100372-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgHVzpA9PT0VcuNGp6j39%2Fuploads%2Fgit-blob-60a3f0e2dc41b21fc7a5350a15a1223d9a58b6a5%2Fclip0496.png?alt=media)

Any change to the applied loads on the entrance canopy beam produces warnings on all 3 girders.

![](https://4249100372-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgHVzpA9PT0VcuNGp6j39%2Fuploads%2Fgit-blob-3edd9f7277849df5d7f6bfbcfe31d03649d10d6e%2Fclip0497.png?alt=media)

![](https://4249100372-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgHVzpA9PT0VcuNGp6j39%2Fuploads%2Fgit-blob-744ba8487bc44789dbc0beec3419ba0a535af76c%2Fclip0498.png?alt=media)


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