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| 1 | Navigate to Load Geometry Definitions > Surface > QuadrilateralArbitrary Polygon |  |
| 2 | Click three-dots icon on Bridge cell and set “Bridge1”. | |
| 3 | Set the name as P3_foot_sur Enter Station, Transverse Offset and Rotation data as in the figure for P3_foot_sur (Load Surface Definitions). |  |
| 4 | Click three-dots icon on “Surface Points” cell and click Edit |  |
| 5 | Enter Longitudinal & Transverse Distance from Reference Point value as in the figure. |  |
| 6 | Keep the default data in the Graphics section constant. |  |
| 7 | To define the geometric surface of all available arbitrary polygon loads in the project, use the parameters provided in the figure. |  |
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| 1 | Navigate to Arbitrary Polygon under Load Geometry Definitions on the tree view. |
| 2 | Copy Surface, and Graphics from model inputs and paste into OpenBrIM. |
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