The Partial Twin Leaf Pier Bottom Connections could be modeled by attaching the Previous full Cross-section to the new Double Leaf CS thru its nodes.
As shown in the picture below, the best practice is to use different node numbers and use rigid links…
In RM Bridge , at Modeler , to model a Partial Twin Leaf Pier users need to create two Rigid Connections at the respective Segment Point .
Click at New Spring ;
Select New Rigid Connection ;
Assign the Spring/Rigid Connection Begin and End to…