hi, i need to model a concrete bridge formed by precast beams and a slab on top. how can i assign an offset to the top slab so that it is located at the correct position? one option is to assign an offset to the beam, or to connect the beams and slab with rigid links. but my prefferred option would be to move upwards the slab. i have the same problem with the abutment walls: how can i align walls that have different thickness so that one of their faces match vertically?
thanks!