# Sections This section defines cross-sectional properties for U-girders, columns, pier caps, end bents, and piles, including reinforcement layouts. {% hint style="info" %} **Navigation:** Properties > Sections For detailed parameter explanations, see the [Sections Reference](https://docs.openbrim.org/templates/concrete-u-girder-bridge-workflow/properties-cug/sections-cug). {% endhint %} ## Step 1: Adding Sections to the Project ### Navigate to Sections Navigate to **Properties > Sections** in the tree view. ![Navigation](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230824-153950.png?api=v2) ### Import U-Girder Sections Click the **three-dots icon** on the first cell of Name and select **Import Section**. Import the following U-girder sections: | Library Path | Section Name | Material | | ------------------------------------------------------------ | ------------ | -------- | | OpenBrIM Bridge Objects > Precast U Girder Sections > WS DOT | U78G5 | Fc\_6ksi | | OpenBrIM Bridge Objects > Precast U Girder Sections > WS DOT | U54G5 | Fc\_6ksi | ![Import Section](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230824-154320.png?api=v2) ### Import Basic Shapes Import basic shapes for substructure sections: ![Basic Shapes](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230825-083854.png?api=v2) ![Shape Selection](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230825-084335.png?api=v2) Create the following sections: | Section Name | Shape | Dimensions | Material | | ------------ | ------ | ------------ | -------- | | EBSec | Square | 42 x 42 in | Fc\_5ksi | | PCSec | Square | 36 x 36 in | Fc\_5ksi | | ColSec | Circle | Radius 18 in | Fc\_6ksi | | PileSec | Square | 12 x 12 in | Fc\_4ksi | ![EBSec](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230825-084736.png?api=v2) ![ColSec](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230825-085547.png?api=v2) ![PileSec](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230825-085753.png?api=v2) ### Create Rigid Section Add a new row and enter **RigidSection** as the name. Assign **RigidMaterial** to this section. ![Rigid Section](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230825-104206.png?api=v2) {% hint style="success" %} Completed section definitions are shown below. {% endhint %} ![Completed Sections](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230825-104410.png?api=v2) ## Step 2: Adding Rebars to Sections ### U78G5 Reinforcement Click the **three-dots icon** on any cell of the **U78G5** row to open the Section Editor panel. ![Section Editor](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230825-105138.png?api=v2) Click the **+ icon** and select **Rebar**. Enter the following parameters: | Parameter | Value | | ---------------------- | ------------ | | Profile | ASTMA615No11 | | Material | A615\_60 | | Reference Edge | Bottom | | Dist. to Outer Surface | 1 in | | Outer Rebar Spacing | 5 in | | Inner Rebar Spacing | 5 in | | # of Rebars (per Row) | 10 | | # of Rows | 1 | ![U78G5 Rebar](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230828-085006.png?api=v2) ![U78G5 Complete](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230828-085048.png?api=v2) ### U54G5 Reinforcement Open the Section Editor for **U54G5** and add the same reinforcement layout as U78G5. ![U54G5 Editor](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230828-085301.png?api=v2) ![U54G5 Complete](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230828-085421.png?api=v2) ### EBSec Reinforcement (End Bent) Open the Section Editor for **EBSec** and add rebars on all four edges: ![EBSec Editor](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230828-085928.png?api=v2) **Top Edge:** | Parameter | Value | | ---------------------- | ----------- | | Profile | ASTMA615No9 | | Material | A615\_60 | | Reference Edge | Top | | Dist. to Outer Surface | 3 in | | Spacing | 4 in | | # of Rebars | 8 | **Bottom Edge:** Same as Top Edge with Reference Edge = Bottom **Left Edge:** | Parameter | Value | | ---------------------- | ----------- | | Profile | ASTMA615No9 | | Material | A615\_60 | | Reference Edge | Left | | Dist. to Outer Surface | 2 in | | Spacing | 5 in | | # of Rebars | 6 | **Right Edge:** Same as Left Edge with Reference Edge = Right ![EBSec Complete](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230828-090643.png?api=v2) ### PCSec Reinforcement (Pier Cap) Open the Section Editor for **PCSec** and add rebars on all four edges using the same approach as EBSec, with: * Top/Bottom: 8 rebars at 4 in spacing, 2 in cover * Left/Right: 6 rebars at 5 in spacing, 2 in cover ![PCSec Complete](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230828-091327.png?api=v2) ### ColSec Reinforcement (Column) Open the Section Editor for **ColSec** and navigate to the **Circular Layout** tab. ![ColSec Editor](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230828-091651.png?api=v2) Enter the following parameters: | Parameter | Value | | ----------- | ------------ | | Profile | ASTMA615No11 | | Material | A615\_60 | | Radius 1 | 14 in | | Radius 2 | 14 in | | # of Rebars | 12 | | # of Rows | 1 | ![ColSec Circular](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230828-091804.png?api=v2) ![ColSec Complete](https://openbrim.atlassian.net/wiki/download/attachments/2258206782/image-20230828-091837.png?api=v2) ## Verification {% hint style="success" %} After completing these steps, all sections have their reinforcement defined and are ready for use in the bridge model. {% endhint %}