This tillable solid French Renaissance château balustrade is a 3D model made in Blender which you can duplicate to the desired length using the Array modifier in Blender or manually in your game engine, such as Unreal. The modifier has been applied for you in Blender already, all you need to do is to specify how many segments you want to build your balustrade. This works well if you're making a French Renaissance garden terrace or stairs. You can also use the screw modifier if you need a spiral staircase.
If you need to skew the balustrade segment vertically - you can use the Blender Lattice modifier (already applied for you) to deform it with a simpler mesh of, say 4 vertices. You can adjust the number of Lattice subdivision segments until the mesh matches your stairs. Both a simple lattice and a complex lattice are provided.
Talk to me if you need something that isn't here, I think most cases have been accounted for.
Have fun!