> 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/construction-ex1-stg/substructure-construction-ex1-stg/pier-column-construction-ex1-stg.md).

# Pier Column Construction

This section defines the pier column construction stage.

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

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

## Overview

The design process of steel girder bridges typically involves modeling the construction of pier caps, pier columns, foundations, and piles as a single stage to streamline the analysis and reduce the number of required stages. However, in real-world construction, these components may be constructed separately over multiple stages, depending on factors such as site conditions, available resources, and project schedule. OpenBrIM offers features that allow users to model these details with various stages and time-dependent staged construction analysis.

## Steps

### Step 1: Navigate to Pier Column Construction

Navigate to **Loading > Construction > Substructure > Pier Column** in the tree view.

![Pier column construction navigation](https://openbrim.atlassian.net/wiki/download/attachments/2175500354/image-20230223-111019.png?api=v2)

### Step 2: Select Construction Stage

Click the **three-dot icon** on the **Stage** cell and select **SubstrConstStage**.

![Stage selection](https://openbrim.atlassian.net/wiki/download/attachments/2175500354/image-20230223-111100.png?api=v2)

### Step 3: Pick Columns

Click the **three-dot icon** on the **Columns** cell and select **Pick**.

![Pick columns](https://openbrim.atlassian.net/wiki/download/attachments/2175500354/image-20230223-111650.png?api=v2)

### Step 4: Select All Columns

Select all **Columns** that were previously defined from the 3D View.

![Select columns](https://openbrim.atlassian.net/wiki/download/attachments/2175500354/image-20230223-112028.png?api=v2)

### Step 5: Complete Selection

Click **Done** to complete the selection.

## Verification

{% hint style="success" %}
All pier columns should be assigned to the SubstrConstStage.
{% endhint %}


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