> 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-prestressed-i-girder-concrete-bridge-ex1-pig/substructure-ex1-pig/pile-ex1-pig.md).
# Pile
This section defines the pile (drilled shaft) properties, including geometry, location offsets, and FEA boundary conditions.
{% hint style="info" %}
**Navigation:** Substructure > Pile
{% endhint %}
## Steps
### Step 1: Navigate to Pile
Navigate to **Substructure > Pile** in the tree view.
### Step 2: Assign Substructure
Click the **three-dots icon** on the **Substructure** cell and select or pick **EndBent1**. Enter the name as **Pile1**.
### Step 3: Define Section Data
Click the **three-dots icon** on the **Section Data** cell and select **Edit**.
Enter the section data for Pile1:
| Parameter | Value |
| -------------------------------- | ------------------------ |
| Section Length (Starts from Top) | 51 ft |
| Start Section | Circle\_exist\_shaft\_EB |
| End Section | Circle\_exist\_shaft\_EB |
### Step 4: Set Location Offsets
Enter the **Longitudinal Offset** and **Transverse Offset** from the origin. Keep other parameters at default values.
### Step 5: Configure FEA Properties
Navigate to the **FEA** tab. Click the **three-dots icon** on **Pile Properties** and select **Edit**.
### Step 6: Set Boundary Conditions
Enter the **Tx/Ty/Tz/Rx/Ry/Rz** properties as shown. These define the soil-structure interaction behavior along the pile length.
### Step 7: Set Pile Capacity
Enter a **Pile Capacity** of **1000 kip** for each pile.
### Step 8: Create All Piles
Repeat the previous steps to create all piles in the project, including piles for end bents and piers.
Quick Tip: Transverse Offset Direction
Offset values use the Profile Grade Line (PGL) as the reference point.
## Verification
{% hint style="success" %}
After completing these steps, the bridge model geometry is complete. Your pile configuration should match the views shown below.
{% endhint %}
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