I would like to ask if I am using a plug-in program to generate a rough surface. What function can I use to combine the rough surface with the surface of my bridge so that my bridge is rough?
Can you change the title to something meaningful like "Rough bridge" or anything ?
In what form do you have that rough surface - orphan mesh (mesh without geometry) or geometrical surface ? Is it a matter of attaching a shell mesh to a solid part ?