> 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/e3d-user-manual/interface/toc175916526/concrete/design-output/toc161393961.md).

# RC Analysis Envelope

How to view the positive, negative, and shear envelopes used for reinforced concrete design.

Concrete Design > Concrete Design Output > RC Analysis Envelope displays the following dialog.

![](https://560001759-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FWNe8U6EBBBdUJHdb2X9G%2Fuploads%2Fgit-blob-5fb320821311c514d69c32977f0f62b0585ace24%2FFASTFR~1_img197.png?alt=media)

It allows you to view the negative and positive moment envelope as well as the shear envelope for concrete design. You have the option to view the envelope for the selected beams/columns only.

{% hint style="info" %}
Note: *The envelope only considers the load combinations that are designated for concrete design.*
{% endhint %}


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