External Diaphgram
Support Line: Select the support line that external diaphragm is constructed. This diaphragm can be set on support lines where girder is continuous or end of the girder units.
Girder: Choose the two girders that external diaphragm is constructed.
Thickness [in]: Materials:Assign the thickness value of the external diaphragm.
Material: Set the material of the external diaphragm.