The shipping container house is just modified from ISO container. And ISO container had its standard size such as 20GP, 40GP and 40HC.
Each shipping container house can be a module to be single use or combined use. This kind of building has its unique advantages: ready to be used, easy transportation and energy saving. Of course it is strong enough to face vast majority situation.
Normally usage of shipping container house can be divided into living, commerce, public facility and special using.