> 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/templates/concrete-segmental-bridge-workflow/superstructure-cbs/custom-girder-cbs/segmental-girder-cbs.md).

# Segmental Girder \[CBS]

The Segmental Girder models one segment of a concrete segmental box girder, placed along a girder layout between a start and an end station. A run of these segments, erected in sequence and stressed together by tendons, makes up the superstructure.

## Girder Parameters

**Girder Layout:** The girder layout line this segment is placed along.

**Start Station:** Station along the layout line where the segment begins (default: 0).

**End Station:** Station along the layout line where the segment ends (default: 120).

**Section:** Cross-section assigned to the segment.

**Segment Length:** Length of the segment, derived from its start and end stations.

## FEA

**Supports:** Insertion points or supports the segment is carried on in the analytical model.

**Additional Break Points List:** Extra break points inserted into the segment's finite-element discretization.

**# of Result Extraction St.:** Number of stations along the segment at which composite analysis results are extracted (default: 1).

**Expansion joint end releases:** Table of end releases applied at expansion joints on the segment.

**Rigid Section:** Section used for the rigid links that connect the segment to its supports.

**Number of mesh (minimum):** Minimum number of finite elements the segment is divided into (default: 1).

## Reinforcement

**Show \[Yes=1/No=0]:** When Yes, the reinforcement is drawn in the 3D view (default: No=0).

**Longitudinal Reinforcement Data:** Table of longitudinal reinforcement rows in the segment.

**Shear Reinforcement Data:** Table of shear (stirrup) reinforcement rows in the segment.

## Visual Settings

**Girder Opacity:** Opacity used when drawing the segment in the 3D view (default: 0.7).

**Reinforcement Opacity:** Opacity used when drawing the reinforcement (default: 1).

**Circular Smoothness:** Number of facets used to draw circular features of the section (default: 6).

## Referencing Objects

**Structure States:** Construction stage objects that stage this segment. (Read-only)

**Temporary Supports:** Temporary Support objects that carry this segment. (Read-only)

**Strands:** Strand objects running through this segment. (Read-only)

**Bracings:** Bracing objects connected to this segment. (Read-only)

**Barriers:** Barrier objects carried by this segment. (Read-only)


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