1. Add mechanical equipment
2. Loading, adding and copying sinks
3. Adding water heaters
4. Add cold water mains pipe
5. Add hot water pipe
6. Modifing the location and size of the hot and cold water piping
7. Connect sinks to the piping
8. Copy sinks and piping to other locations
9. Check connections and modify fittings
10. Add pipe to the rest of the building