Place an object on curves points

Hi all,

I start learning Rhino and grasshopper recently. I am working on a script so that I can model a bridge in Tekla. I draw a pier in rhino and by using grasshopper I put points on a polyline (my control line), but I cannot find a way to copy my pier in the locations that I want (points).
Basically I want a grasshopper script so I can copy an object in rhino to a specific locations on a polyline. I would be grateful if someone can help me.

You probably want the orient component.
You take the geometry of the pier and base point and then the locations on the control line as the final position.

Thanks Christopher