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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

As the project calls for 5 External Diaphragms, this number of diaphragms has been defined.

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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.

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6

Click three-dots icon on Select Pier/End cell and pick location as in the figure.


Enter 260 for the "Station [ft]" cell of the last line.

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7

Enter the following data for Offset from Pier/End [ft] as in the figure

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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.

Tip

The External Diaphragm that have been created are illustrated below.

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External Diaphragm

Location

Section Details

3D Details

Code Block
languagexml
EXTDIA1	[G1,G2]	0	Pier-End	10	Abut1	1.5	A709_50W
EXTDIA2	[G1,G2]	0	Pier-End	10	Pier2	0	A709_50W
EXTDIA3	[G1,G2]	0	Pier-End	10	Pier3	0	A709_50W
EXTDIA4	[G1,G2]	0	Pier-End	10	Abut4	-1.5	A709_50W
EXTDIA5	[G1,G2]	0	Intermediate	260	NULL	0	A709_50W
Code Block
languagexml
EXTDIA1	YES	YES	1.75	15	1	1	15	0.625	1
EXTDIA2	YES	YES	1.75	15	1	1	15	0.625	1
EXTDIA3	YES	YES	1.75	15	1	1	15	0.625	1
EXTDIA4	YES	YES	1.75	15	1	1	15	0.625	1
EXTDIA5	YES	YES	1.75	15	1	1	15	0.625	1

Code Block
languagexml
EXTDIA1	2.5	NO
EXTDIA2	2.5	NO
EXTDIA3	2.5	NO
EXTDIA4	2.5	NO
EXTDIA5	2.5	NO