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This project goes into the build of an Underground Survival Bunker from an Old Used Shipping Container. Shipping containers can be effectively used as an alternative emergency shelter as it cheap to build, can provide you with security during storm, flood or hurricane or it can used as a storage cellar or even as a garage.

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Before starting the project, make sure that shipping container you have bought is not heavily used, banged up or rusty with holes. It is preferable that you go with a new one instead of a overused beaten one. The container used here is a less damaged one. The dimensions of the container is 20ft long and 8 and 1/2 ft tall.

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The shipping container cannot be buried directly the way they are. It is not safe. The strength of the containers lies in the floor and the uprights.The load bearing capacity of the container is distributed along the corners of the container. Here we invert the container so that the floor of the container is the new roof. The inverted floor has more strength to withhold any stress from outside. Before burying the container, make sure that you have a proper foundation. Don’t place the inverted container directly on the soil. Since the earth will settle overtime, the probability of the container also settling and becoming off balance is there. Also add a drainage system to the foundation so as to prevent any concrete runoff in case of a flood or massive rain.

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To roll over the container cheaply with a crane, we use bunch of old tyres lined on support corners of the container where the beams are the strongest. We pull the container using a rollback tow truck and lay them right on the tyres and do this process once more to completely invert the container. Make sure you have the container doors are locked in place.

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Since the load bearing capacity of the container is not located on the walls and roof ( floor in our case) , it can be crushed by the soil around it once it is buried, so proper bracing around the sides and floor is necessary. You have to build the support structure from the inside to hold everything securely.

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Walls made of 4 inch structural steel beams sandwiched between 2 quarter Inch steel plate firmly supports the inside of the container from caving in . Two such walls spaced apart are installed. Couple of structural beams are welded across the sides of the container too for extra support.

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The back wall has two structural beams running across .Also an opening for escape hatch is made in case of an emergency situation. The door for the hatch is bolted down using rubberized silicon so easy removal later.

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Since the floor ( the original roof) structure is really flimsy and weak, we secure them with structural beams along the width of the floor from the front all the way across to the end. This is then covered with steel plates that is welded all along the length of the floor.

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The roof the container ( the actual floor) is covered and sealed up water tight with quarter inch steel plate. Holes for the air ventilation pipes and and entry opening hatch are also made alongside with this. The roof needs to be sealed tightly to prevent any leak.

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To prevent the container from gathering moisture and attracting rust and thus erode and fall apart, the exterior is sealed with a triple coated water proof paint.

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Eight and half foot deep hole is dug with the help of an excavator. As we said before, the first thing to do is to make a proper foundation with drainage options before the container is placed . The container is safely placed with the help of a crane once the foundation is finished.

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To provide some extra seal, the top of the container is coated with tar and then covered by 20 foot X 100 foot plastic sheet . Then we begin covering up the container with the soil and bury them completely.

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Image Credits : loveihi | Youtube





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