How much building material is needed?
The amount of building material starts with the decision how many floors to build. The step from just the ground floor to the first floor is a huge leap.A lack of footfall sound insulation is something for which a building owner is cursed even after decades. So that you can hear no one walking on the floor below, you take a prestressed concrete ceiling, footstep sound insulation and screed on it and then the floor covering comes. This means you are over 400 kg per m².
You can't just put this on a few ground anchor. During the planning of GEMIN 66-105 I was at 30 m³ concrete with 70 tons weight for the foundation. Together with prestressed concrete and screed for the floor of the 1st floor already over 100 tons.