> 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/concrete-bridge-examples/example-concrete-u-girder-bridge/load-rating-ex1-cug/girder-load-rating-ex1-cug.md).

# Girder Load Rating

This section performs load rating analysis for the U-girder superstructure.

{% hint style="info" %}
**Navigation:** Load Rating > Girder Load Rating

For detailed parameter explanations, see the [Girder Load Rating Reference](https://docs.openbrim.org/templates/concrete-u-girder-bridge-workflow/load-rating-cug/concrete-girder-load-rating-cug).
{% endhint %}

## Steps

### Step 1: Navigate to Girder Load Rating

Navigate to **Load Rating > Girder Load Rating** in the tree view.

### Step 2: Select Rating Template

Associate the appropriate load rating code check template configured earlier.

### Step 3: Configure Rating Parameters

Set rating analysis parameters:

* **Rating Vehicle:** Select from HL-93, legal loads, or permit vehicles
* **Rating Level:** Design, Legal, or Permit
* **Condition Factor:** Based on structural condition assessment

### Step 4: Define Check Locations

Specify sections for rating factor calculation:

* Critical moment locations
* Critical shear locations
* Tendon stress zones

### Step 5: Run Load Rating

Execute the load rating analysis and review rating factors.

<details>

<summary><strong>Quick Tip:</strong> Rating Factor Interpretation</summary>

A rating factor (RF) ≥ 1.0 indicates adequate capacity for the rating vehicle. RF < 1.0 indicates the structure cannot safely carry the rated load.

</details>

## Verification

{% hint style="success" %}
After completing these steps, review the rating factors to confirm adequate load-carrying capacity.
{% endhint %}


---

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