> 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/bearing-ex1-stg.md).

# Bearing

This section defines the bearing construction stage.

{% hint style="info" %}
**Navigation:** Construction > Substructure Construction > Bearing
{% endhint %}

## Overview

The construction of bearings in a steel girder bridge is typically represented by two-node springs between the pier cap and the girder in a finite element analysis model. To prevent instability issues, it's usually recommended to incorporate the bearing construction stage into the girder construction stage. If the pier cap construction stage is used instead, the top node of the spring may not be connected to any elements, leading to unrestricted movement in non-fixed directions.

## Steps

### Step 1: Navigate to Bearing Construction

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

![Bearing construction navigation](https://openbrim.atlassian.net/wiki/download/attachments/2168553528/image-20230223-091758.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/2168553528/image-20230223-091844.png?api=v2)

### Step 3: Pick Insertion Points

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

![Pick insertion points](https://openbrim.atlassian.net/wiki/download/attachments/2168553528/image-20230223-092040.png?api=v2)

### Step 4: Select All Insertion Points

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

![Select insertion points](https://openbrim.atlassian.net/wiki/download/attachments/2168553528/image-20230223-092740.png?api=v2)

### Step 5: Complete Selection

Click **Done** to complete the selection.

## Verification

{% hint style="success" %}
All bearing insertion points should be assigned to the appropriate construction stage.
{% endhint %}


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