> pre-cast concrete shipped in I've also seen this done where the walls were cast concrete using molds placed on the large and flat foundation floor. Still we

> pre-cast concrete shipped in I've also seen this done where the walls were cast concrete using molds placed on the large and flat foundation floor. Still went up alarmingly fast. It does make me wonder if similar balloon techniques are worth re-visiting for domestic architecture. Either way, it's amusing to see such a rapid construction technique used to warehouse and bootstrap a completely different rapid construction technique. > Majority of the project time was leveling, compacting, and foundation. And drainage. It's amazing how much time and construction effort goes into "make water go down the hole".