beam by path

Hi, I want to create a beam by path

I have drawn a path (complex chain)and created the beams:

all possible placements are used on the chain,
so this is not useful

how to make the steel profiles are all on the same position, and connected (bisector)

OBD u8

VCA80469_S_VO-02_3D-PT_10000-99.dgn

regards Rik