This practice exercise was pretty straight forward since most of the connections were made automatically, and the bathrooms were directly above each other. However, I did have to manually change some of the pipes when I copied and pasted them to make sure everything was properly connected. Also, a challenge I faced was that the main pipes became too tall when I copied and pasted them to the next level. I lowered them a few feet, but they still seem to be too tall.
I anticipate the plumbing for my building to be much harder since my bathrooms are not directly above one another.