Precautions:
First, leave enough space around the tall sewer pipe (the thick one) to prevent the pipe from sweating in the dog days.
Second, the manhole on the ground should be covered with plastic sheets or blocked with logs, and then waterproof.
Third, protect the top of the pipeline to ensure that it will not leak.
Fourth, the whole room should be completely waterproof (six sides).
If you believe in Feng Shui, you can ask Mr. Feng Shui to help you.