# Pier

This section defines the hammerhead pier components including pier caps and columns.

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**Navigation:** Substructure > Pier
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## Overview

The pier system consists of:

* Hammerhead pier caps with prismatic sections
* Circular reinforced concrete columns

## Sections

| Section                                                                                                                                                               | Description                         |
| --------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------- |
| [Pier Caps](https://docs.openbrim.org/examples/steel-bridge-examples/example-steel-tub-girder-bridge-ex1-stg/substructure-ex1-stg/pier-ex1-stg/pier-caps-ex1-stg)     | Define hammerhead pier cap geometry |
| [Pier Column](https://docs.openbrim.org/examples/steel-bridge-examples/example-steel-tub-girder-bridge-ex1-stg/substructure-ex1-stg/pier-ex1-stg/pier-column-ex1-stg) | Configure circular pier columns     |

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Complete pier definitions before defining foundations.
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