# Concrete Deck

This section defines the concrete deck geometry, cross-sections, material properties, and reinforcement.

{% hint style="info" %}
**Navigation:** Superstructure > Deck > Concrete Deck

For detailed parameter explanations, see the [Concrete Deck Reference](https://docs.openbrim.org/templates/concrete-u-girder-bridge-workflow/superstructure-cug/deck-cug/concrete-deck-cug).
{% endhint %}

## Steps

### Step 1: Navigate to Concrete Deck

Navigate to **Deck > Concrete Deck** in the tree view.

![Concrete Deck navigation](https://openbrim.atlassian.net/wiki/download/attachments/2258796601/image-20230829-120406.png?api=v2)

![Concrete Deck spreadsheet](https://openbrim.atlassian.net/wiki/download/attachments/2258796601/image-20230829-121417.png?api=v2)

### Step 2: Select Girders

Click the **three-dots icon** on the **Girders** column and select **Pick**. Graphically select the girders (CUG1, CUG2) to associate with the deck.

### Step 3: Define Cross-Section

Click the **three-dots icon** on the **Cross-Section** cell and select **Edit**.

![Edit Cross-Section](https://openbrim.atlassian.net/wiki/download/attachments/2258796601/image-20230829-121709.png?api=v2)

### Step 4: Assign Cross-Section Locations

Click the **three-dots icon** on **Cross Section Location** and define the locations:

| Support Line | Cross-Section |
| ------------ | ------------- |
| SL1          | CS1           |
| SL4          | CS1           |

![Cross-Section Location](https://openbrim.atlassian.net/wiki/download/attachments/2258796601/image-20230829-122248.png?api=v2)

![Cross-Section Assignment](https://openbrim.atlassian.net/wiki/download/attachments/2258796601/image-20230829-122528.png?api=v2)

<details>

<summary><strong>Quick Tip:</strong> Cross-Section Variation</summary>

When the cross-section changes between two support lines, use the **Variation w/Next Segment** parameter to define transition attributes between sections.

</details>

### Step 5: Assign Material

Navigate back to the **General** tab and set **Material** to **Fc\_5ksi**.

![General Tab](https://openbrim.atlassian.net/wiki/download/attachments/2258796601/image-20230829-123632.png?api=v2)

### Step 6: Define Deck Reinforcement

Click the **three-dots icon** on **Deck Reinforcement Data** and select **Edit**.

![Reinforcement Data](https://openbrim.atlassian.net/wiki/download/attachments/2258796601/image-20230829-125440.png?api=v2)

Enter the reinforcement parameters:

| Parameter      | Value       |
| -------------- | ----------- |
| Rebar Material | A615\_60    |
| Top Cover      | 4 in        |
| Bottom Cover   | 4 in        |
| Top Rebar      | ASTMA615No9 |
| Bottom Rebar   | ASTMA615No9 |
| Top Spacing    | 2 in        |
| Bottom Spacing | 2 in        |

![Reinforcement Configuration](https://openbrim.atlassian.net/wiki/download/attachments/2258796601/image-20230829-132226.png?api=v2)

## Verification

{% hint style="success" %}
The completed concrete deck is shown below.
{% endhint %}

![Completed Deck Plan](https://openbrim.atlassian.net/wiki/download/attachments/2258796601/image-20230829-132644.png?api=v2)

![Completed Deck 3D](https://openbrim.atlassian.net/wiki/download/attachments/2258796601/image-20230829-132739.png?api=v2)