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Please follow the instructions provided below to create External Diapgrahm. |
| 1 | Navigate to Bracing > External Diaphragm Several structural elements are used to ensure that the two Tub Girders work together structurally, and one of these elements is the "External Diaphragm”. | 
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| 2 | Click three-dots icon on Girders cell and pick the two Tub Girders (G1 & G2) between which the External Diaphragm will be placed. | |
| 3 | Define 5 External Diaphragms with the following inputs. |  |
| 4 | Also Skew Angle value is 0. | |
| 5 | Since our project has 4 pier-end points, assign the "Pier-End" type to the External Diaphragm for the first 4 rows. Assign the "Intermediate" type to the External Diaphragm for the last row. |  |
| 6 | Click three-dots icon on Select Pier/End cell and pick location as in the figure.
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| 7 | Enter the following data for Offset from Pier/End [ft] as in the figure |  |
| 8 | Click three-dots icon on Material cell and assign the material type of all external diaphragms to A709_50W. | |
| 9 | You can make adjustments to the "Section Details" and "Stiffener" tabs if you wish. |   |
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| 1 | Navigate to External Diaphragm under Bracing on the tree view. |
| 2 | Copy Location, Section Details and 3D Details from model inputs and paste into OpenBrIM. |
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The External Diaphragm that have been created are illustrated below. |
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External Diaphragm | |||||||||||||||||
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Location | Section Details | 3D Details | |||||||||||||||
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