# Sections This section defines the cross-sectional properties for girders, columns, caps, shafts, and barriers. Sections can be imported from the library or created manually. {% hint style="info" %} **Navigation:** Properties > Sections For detailed parameter explanations, see the [Sections Reference](https://docs.openbrim.org/templates/precast-i-girder-bridge-workflow/properties-pig/sections-pig). {% endhint %} ## Part 1: Adding Sections to the Project ### Step 1: Navigate to Sections Navigate to **Properties > Sections** in the tree view. ![Navigation](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230712-110345.png?api=v2) ### Step 2: Import Girder Section Click the **three-dots icon** on the first cell under **Name** and select **Import Section**. Select **OpenBrIM Bridge Objects > Precast I Girder Sections > AASHTO I BEAMS > AASHTO\_TYPE\_III\_BEAM** and assign material **Fc\_6ksi**. ![Import Girder](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230803-153815.png?api=v2) ### Step 3: Import Circular Sections Import circular sections for shafts and columns: | Section Name | Radius | Material | | -------------------------- | ------ | ------------- | | Circle\_exist\_shaft\_EB | 18 in | Fc\_4ksi | | Circle\_exist\_shaft\_Pier | 24 in | Fc\_4ksi | | Circle\_exist\_column | 18 in | Fc\_5\_1/2ksi | ![Circle Import](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230712-115718.png?api=v2) ![Circle Parameters](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230712-115801.png?api=v2) ### Step 4: Import Rectangular Sections Import rectangular sections for caps: | Section Name | Width | Depth | Material | | ----------------------- | ----- | ----- | ------------- | | Rectangle\_exist\_EBcap | 44 in | 40 in | Fc\_5\_1/2ksi | | PierCap\_exist | 48 in | 40 in | Fc\_5\_1/2ksi | ![Rectangular Sections](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230712-122236.png?api=v2) ### Step 5: Import Barrier Section Select **OpenBrIM Bridge Objects > Barrier Sections > General > SingleSlopeRight**. | Parameter | Value | | ------------ | ------------------------ | | Section Name | Exist\_Barrier\_sw | | Top Width | 10 in | | Bottom Width | 18 in | | Depth | 32 in | | Material | Fc\_3\_2ksi\_NoStiffness | ![Barrier Section](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230712-131136.png?api=v2) ![Barrier Parameters](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230712-134657.png?api=v2) ### Step 6: Create Rigid Section Add a new row and define a **RigidSection** for rigid link connections. ![Rigid Section](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230712-135744.png?api=v2) {% hint style="success" %} After completing Part 1, your section definitions should match the view shown below. {% endhint %} ![Completed Sections](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230803-154327.png?api=v2) ## Part 2: Adding Rebars and Strands to Sections This part defines the reinforcement details for each section. ### AASHTO\_TYPE\_III\_BEAM Click the **three-dots icon** on the AASHTO\_TYPE\_III\_BEAM row to open the Section Editor. ![Section Editor](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230712-142638.png?api=v2) **Top Rebar:** Click the **+** icon and select **Rebar**. Configure: * Profile: ASTMA615No8 | Material: A615\_60 | Reference Edge: Top * Distance to Outer Surface: 2 in | Spacing: 4 in | Count: 4 rebars ![Top Rebar](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230712-143829.png?api=v2) **Bottom Rebar:** * Profile: ASTMA615No8 | Material: A615\_60 | Reference Edge: Bottom * Distance to Outer Surface: 2 in | Spacing: 2 in | Count: 8 rebars ![Bottom Rebar](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230712-144221.png?api=v2) **Prestressing Tendons:** Click the **+** icon and select **Tendon**. | Row | Dist. to Ref Edge | Outer Spacing | Inner Spacing | Strand Count | Tendons/Row | | --- | ----------------- | ------------- | ------------- | ------------ | ----------- | | 1 | 4 in | 3 in | 4 in | 1 | 7 | | 2 | 6 in | 2.5 in | 2.5 in | 1 | 6 | | 3 | 8 in | 3 in | 3 in | 1 | 3 | All tendons use: Material: A416\_270low\_relaxation | Strand: Grade270\_3\_8\_No9 ![Tendon Setup](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230712-150054.png?api=v2) ![Completed Tendons](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230712-151411.png?api=v2) ### Circle\_exist\_column Open the Section Editor for Circle\_exist\_column. ![Column Section](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230801-121342.png?api=v2) Navigate to the **Circular Layout** tab: * Profile: ASTMA615No11 | Material: A615\_60 * Radius: 14 in | Count: 20 rebars ![Circular Rebar](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230801-121830.png?api=v2) ![Completed Column](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230801-122036.png?api=v2) ### Rectangle\_exist\_EBcap Open the Section Editor for Rectangle\_exist\_EBcap. ![EB Cap Section](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230801-143116.png?api=v2) Use the **Draw Rebar Points** tab to define rebar at top, middle, and bottom: | Location | Profile | Count | | -------- | ----------- | ----- | | Top | ASTMA615No9 | 4 | | Middle | ASTMA615No6 | 2x2 | | Bottom | ASTMA615No9 | 4 | ![Draw Rebar](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230712-161812.png?api=v2) ### PierCap\_exist Open the Section Editor for PierCap\_exist. ![Pier Cap Section](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230802-070045.png?api=v2) Use the **Draw Rebar Points** tab: | Location | Profile | Count | | -------- | ------------ | ----- | | Top | ASTMA615No11 | 9 | | Middle | ASTMA615No6 | 5x2 | | Bottom | ASTMA615No11 | 5 | ![Pier Cap Rebar](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230802-070454.png?api=v2) ![Completed Pier Cap](https://openbrim.atlassian.net/wiki/download/attachments/2235760642/image-20230802-072001.png?api=v2) ## Verification {% hint style="success" %} After completing all steps, verify that all sections have the correct reinforcement definitions by opening each section in the Section Editor. {% endhint %}