Dear Client,
This approach it may not be the most economic, but it was planned to be an unique structure, detached from the ground by creating a platform where "containers" can be placed on a virtual grid-Project A- with parking ground floor for 18 cars.
It can also function by putting the first floor on directly on the ground level, but there will be little space for parking- Project B- with parking for 8 cars.
Regards!