> 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/examples/steel-bridge-examples/example-steel-tub-girder-bridge-ex1-stg/superstructure-attachments-ex1-stg/f-shape-barrier-ex1-stg.md).
# F Shape Barrier
{% hint style="info" %}
**Navigation:** Superstructure Attachments > F Shape Barrier
For detailed parameter explanations, see the [F Shape Barrier Reference](https://docs.openbrim.org/templates/steel-tub-girder-bridge-workflow/superstructure-attachments-stg/barrier-stg).
{% endhint %}
**Step 1:** Navigate to Superstructure Attachments > **F Shape Barrier**
**Step 2:** The F barrier will be defined on both the left and right sides of the Deck object.
Click **three-dots icon** on **Deck** cell and set Deck1 at twice.
**Step 3:** Select the **Orientation** of the barriers on both sides as in the figure.
**Step 4:** Set the concrete **Material** of the barrier to Fc\_4ksi.
**Step 5:** Enter **Start Transverse Offset** and **End Transverse Offset** as in the figure.
**Step 6:** You can make adjustments to the **"Dimensions"** tab if you wish.
**Step 7:** Quick Tip
Barriers are included in the FE model to distribute the Wind Forces.
Also, by assigning a section, you can define a custom shaped barrier.
Quick Tip: Transverse Offset Direction
Offset values use PGL as the reference point.
***
{% hint style="success" %}
The F Shape Barrier that have been created are illustrated below.
{% endhint %}
***
If icon won't appear, collapse page tree menu by clicking on arrow or using shortcut "\[".
| **F Shape Barrier** | |
| --------------------------------- | ---------- |
| F Shape Barrier | Dimensions |
| \`\`\` | |
| BR1 Deck1 Left Fc\_4ksi -251 -251 | |
| BR2 Deck1 Right Fc\_4ksi 251 251 | |
| \`\`\` | \`\`\` |
| BR1 35 20 15 10 0 | |
| BR2 35 20 15 10 0 | |
```|
```
---
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