# 3.7.6: Reaction Forces 🔷

![Fig. 3.7.6.1: Reaction forces and moments for two load-cases](https://442610158-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MCkDlhlZpqUmakSqOrp%2F-Mk74xBfI6RbFIgeR9Ls%2F-Mk77N8woMyZF3_OGtIh%2Fimage.png?alt=media\&token=daa81dad-ef5b-4d4c-8f7a-c0e256fa9158)

The **“Reaction Forces”**-component gives access to the support forces and moments. It expects a model at its input-plug and returns via **“RF”** and **“RM”** a list containing reaction forces in $$kN$$ and reaction moments in $$kN m$$ as three dimensional vectors.

Specific supports can be selected via the **"Pos|Inds"**-input: either specify node indexes or positions. In case no input is provided, results for all supports will be output.

The input-plug **“LCase”** sets the load-case index for which the results shall be output. All support reactions are ordered in such a way that the indexes of the nodes they attach to form an ascending sequence. In case of locally oriented supports, reaction forces refer to the local coordinate system. **“Pos”** returns the position of the supports in the same order as the results. **“SumRF”** and **“SumRM”** offer the possibility to check the resultant reaction moments and forces of each load-case.

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