> 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-box-girder-bridge-workflow/superstructure-cbg/box-girder-cbg/box-girder-shape-cbg.md).

# Box Girder Shape \[CBG]

The ‘Box Girder Shape’ refers to the cross section of the box girder. Different cross sections of the box girders within a project may require distinct box girder shapes to be defined in OpenBrIM. These cross sections will later be assigned to the Concrete Box Girder section of the workflow, along with their location definitions.

## Overall Dimension

**Width:** Width of the box girder.

**Depth :** Overall depth of the box girder.

**Number of Interior Webs:**

**Transverse Offset:** Transverse offset of the box-girder shape from the PGL. Positive values shift the section to the right when looking upstation.

![image-20240925-084641.png](https://openbrim.atlassian.net/wiki/download/attachments/2229764284/image-20240925-084641.png?api=v2)

## Slabs

**Top Thickness:**

**Bottom Thickness:**

**Top Fillet:**

**Bottom Fillet:**

![image-20240925-085639.png](https://openbrim.atlassian.net/wiki/download/attachments/2229764284/image-20240925-085639.png?api=v2)

## Webs

**Exterior Web Offset:**

**Exterior Web Thickness:**

**Interior Web Thickness:**

![image-20240925-090232.png](https://openbrim.atlassian.net/wiki/download/attachments/2229764284/image-20240925-090232.png?api=v2)

## Overhangs

**Overhang Width:**

**Overhang Thickness Outer:**

**Overhang Thickness Inner:**

![image-20240925-095315.png](https://openbrim.atlassian.net/wiki/download/attachments/2229764284/image-20240925-095315.png?api=v2)


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