Request: Approach to making objects/roads follow a terrain

I used the sandbox tool and made terrain with contours. It was sufficient to make a “within the ballpark” placement of objects, so I am happy with the end result. The Drape tool was excellent to use on a straight forward road which is currently on the east(right) side of the building.

After a relatively small amount of fine tinkering by removing the excess amount, a small road was built. Same with a small pathway from the platform and up to the western side of the platform.

I draped a line which I used as a reference to where the fence is placed, and then I added fence components on top.