After deepening the cellar space to the required depth, we dug out trenches, which we filled-up with 0-4 fraction backfill sand. We have then laid sewer pipeline in the sand. This pipeline is designated to serve technical room which will be established in this space over time. The main sewer pipe which drains the sewage from the entire building also passes under the technical room. A floor drain was planned to be placed in the middle of technical room floor.
We are fully aware that we are losing almost perfect interior for shooting a B category horror movie, but the situation is relentless. In the part of the cellar which is usable we have to remove the partition wall and deepen the whole space so that it can be utilized for establishing a utility and boiler room. Furthermore, the main sewer pipes will lead below this room out of the building. We first removed the partition wall. Then we broke the original floor and carried all the rubble out. Subsequently we started to deepen the cellar.