> 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/combinations-ex1-cug/design-load-combinations-ex1-cug/load-combination-table-ex1-cug.md).

# Load Combination Table

This section configures load factors for each design load combination.

{% hint style="info" %}
**Navigation:** Combinations > Design Load Combinations > Load Combination Table

For detailed parameter explanations, see the [Load Combination Table Reference](https://docs.openbrim.org/templates/concrete-u-girder-bridge-workflow/combinations-cug/design-load-combinations-cug/load-combination-table-cug).
{% endhint %}

## Steps

### Step 1: Navigate to Load Combination Table

Navigate to **Combinations > Design Load Combinations > Load Combination Table** in the tree view.

### Step 2: Review Default Load Factors

Review the default load factors provided for each limit state per AASHTO LRFD Table 3.4.1-1.

### Step 3: Modify Load Factors (If Required)

Adjust load factors based on project-specific requirements:

| Load Type            | Strength I | Service I | Service III |
| -------------------- | ---------- | --------- | ----------- |
| DC (Dead Load)       | 1.25/0.90  | 1.00      | 1.00        |
| DW (Wearing Surface) | 1.50/0.65  | 1.00      | 1.00        |
| LL (Live Load)       | 1.75       | 1.00      | 0.80        |
| PS (Prestress)       | 1.00       | 1.00      | 1.00        |

### Step 4: Configure Multiple Presence Factors

Ensure multiple presence factors are applied correctly for live load combinations.

<details>

<summary><strong>Quick Tip:</strong> Max/Min Load Factors</summary>

Use maximum load factors when the load effect increases the design action, and minimum factors when it decreases the design action. This ensures the most critical condition is evaluated.

</details>

## Verification

{% hint style="success" %}
After completing these steps, load combination factors are configured per AASHTO LRFD requirements.
{% endhint %}


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