
While the whole frame and walls contribute to the overall strength of the container’s structure, the main elements carrying the load are reinforced corner posts (Castings). The load is applied to the container’s corner castings.
It also means that the container’s side doors are closed. In other words – its structural integrity is not weakened by removed walls, or cuts in the walls for windows, doors, and in general any modifications necessary to transform the cargo container into a habitable space.
It applies to an unmodified structure of the shipping container. This enormous strength by far exceeds the needs you may face when building your shipping container house. It means, that the bottom container must withstand the weight of up to 8 x 62,150 lbs which results in a staggering number of 487,200 lbs (about 225,5 tons). Such a container must also withstand the weight of 8 fully loaded containers stacked on top of it. It includes the net weight of the container (about 5,000 lbs) and its cargo (up to 57,150 lbs). The maximum weight of a fully-loaded 20ft shipping container is 62,150 lbs (about 28,190 kg). Does the container need extra reinforcement? Shipping Container House with the Rooftop Deck. Below we will try to address practical issues related to the realization of the project. In the previous article Container Houses – Above the Ground Decks, we outlined major challenges you will face when building a rooftop deck on the top of a shipping container house.