A flat Slab or individual footings must be leveled especially when the modules are joined.
Individual foundation can be Precast Concrete Blocks or Screw Piles.
Corner needs to be bolted down to foundation using hold-down bolts to avoid movement of building.
Size and Weight
20ft Container is the most popular size and used widely in different circumstances.
After assembly, the external sizes are same as ISO 20ft shipping container, which makes no difficult for land transport in any countries.