> For the complete documentation index, see [llms.txt](https://docs.openbrim.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.openbrim.org/templates/precast-i-girder-bridge-workflow/bridge-geometry-pig/girder-layout-pig.md).

# Girder Layout \[PIG]

A separate girder layout needs to be defined for each **continuous** girder.

## Layout

**Supports:** By clicking on the related cell and using the appearing three dots, the option ‘Pick…’ can be used to choose the needed insertion points for defining girder layouts (a minimum of 2 insertion points must be chosen).

{% hint style="warning" %}
Refer to this [page](https://docs.openbrim.org/examples/steel-bridge-examples/example-steel-i-girder-bridge-ex1-sig/bridge-geometry-ex1-sig/insertion-point-ex1-sig) to select the insertion points graphically if you are picking 3D objects for the first time. This step is often entered incorrectly by first-time users.
{% endhint %}

**Total Length (readonly):** Displays the total length of the girder layout between its start and end.

## 3D Settings

**Initial Cantilever Length of Girder:** Start cantilever length refers to the part of the girder that extends beyond the first support and is unsupported. The cantilever length is ignored when creating Finite Element Analysis (FEA) models.

**End Cantilever Length of Girder:** End cantilever length refers to the part of the girder that extends beyond the last support and is unsupported. The cantilever length is ignored when creating Finite Element Analysis (FEA) models.


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