# Pier Column

This section defines the pier column geometry, sections, and positions for intermediate supports.

{% hint style="info" %}
**Navigation:** Substructure > Pier > Pier Column

For detailed parameter explanations, see the [Pier Column Reference](https://docs.openbrim.org/templates/concrete-u-girder-bridge-workflow/substructure-cug/pier-cug/pier-column-cug).
{% endhint %}

## Steps

### Step 1: Navigate to Pier Column

Navigate to **Pier > Pier Column** in the tree view.

![Pier Column navigation](https://openbrim.atlassian.net/wiki/download/attachments/2258632726/image-20230831-133220.png?api=v2)

### Step 2: Assign Cap and Name

Click the **three-dots icon** on the **Cap** cell and select the pier cap. Enter the column name (e.g., **Pier\_1**).

### Step 3: Define Section Data

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

Enter the following parameters:

| Parameter                 | Value  |
| ------------------------- | ------ |
| Section Length (from Top) | 50 ft  |
| Start Section             | ColSec |
| End Section               | ColSec |

![Section Data Edit](https://openbrim.atlassian.net/wiki/download/attachments/2258632726/image-20230831-133400.png?api=v2)

![Section Selection](https://openbrim.atlassian.net/wiki/download/attachments/2258632726/image-20230831-133751.png?api=v2)

![Section Parameters](https://openbrim.atlassian.net/wiki/download/attachments/2258632726/image-20230831-133824.png?api=v2)

### Step 4: Set Column Position

Navigate to the **General** tab and enter the position parameters:

| Parameter         | Value  |
| ----------------- | ------ |
| Transverse Offset | ±10 ft |
| Rotation Angle    | 0°     |
| Bottom Elevation  | -35 ft |

![General Tab](https://openbrim.atlassian.net/wiki/download/attachments/2258632726/image-20230831-134236.png?api=v2)

### Step 5: Create All Pier Columns

Repeat the previous steps to create all pier columns:

| Column  | Cap      | Transverse Offset |
| ------- | -------- | ----------------- |
| Pier\_1 | PierCap1 | -10 ft            |
| Pier\_2 | PierCap1 | +10 ft            |
| Pier\_3 | PierCap2 | -10 ft            |
| Pier\_4 | PierCap2 | +10 ft            |

![All Columns](https://openbrim.atlassian.net/wiki/download/attachments/2258632726/image-20230831-140258.png?api=v2)

<details>

<summary><strong>Quick Tip:</strong> Transverse Offset Direction</summary>

Offset values use PGL (Profile Grade Line) as the reference point. Positive values offset to the right, negative to the left.

![Offset Reference](https://openbrim.atlassian.net/wiki/download/attachments/2104689432/image-20230216-130246.png?api=v2)

</details>

## Verification

{% hint style="success" %}
The completed pier columns are shown below.
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![Completed Columns Plan](https://openbrim.atlassian.net/wiki/download/attachments/2258632726/image-20230831-140706.png?api=v2)

![Completed Columns 3D](https://openbrim.atlassian.net/wiki/download/attachments/2258632726/image-20230831-140729.png?api=v2)