How to Build a Storm Shelter

Step-by-Step Guide

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   Step 1: Decide what type of "storm" and/or "wind rating" you are building a shelter for.

   Tornado is an "EF" rating of 1-5.
   
   Hurricane is similar.
   
   This will help you decide on how strong your shelter should be built.
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   Step 2: Find out if the area you intend to install this 'tornado or hurricane' shelter is in a "flood zone" or "storm surge zone."

   This will help you decide on an "in-ground" or "above ground" model. ,, Tornado shelters only require 3-5 square foot of space per occupant. , A berm shelter is not completely underground, which allows you access to the door without building a full set of stairs. , Allow it to cure completely. , Line the frame with waterproof membrane and reinforce it with a wire mesh.
   
   Use anchors to attach the frame to the foundation. , Reinforce the roof with additional layers of wire mesh to strengthen it, making it thick enough to withstand 200 pounds of force so it doesn't get torn off by high winds. , Make sure the hinges are on the outside of the frame. ,,, Put in benches or other seating and consider ways to make sleeping on the shelter floor more comfortable.
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   Step 3: Once you have found it safe to install an in-ground type model

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   Step 4: the following is helpful.

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   Step 5: For hurricane shelters measure a space large enough to provide about 10 square feet of space for each person who will use the shelter

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   Step 6: plus room for supplies.

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   Step 7: Excavate a hole larger than the size of the room to allow space to build walls and install a door.

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   Step 8: Pour a concrete foundation 5 inches (12.7 cm) thick.

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   Step 9: Built a dome-shaped frame using wood

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    Step 10: fiberglass or steel

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    Step 11: depending on the severity of the storms you area tends to experience.

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    Step 12: Pour concrete over the frame.

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    Step 13: Install a steel door frame and door with three deadbolt latches.

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    Step 14: Cover the roof with waterproof membrane and add masonry or other material to help it blend into the surroundings in an attractive way.

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    Step 15: Finish the interior

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    Step 16: if desired

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    Step 17: to make the shelter more cozy.

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    Step 18: Install sturdy shelves to organize supplies and maximize floor space.

Detailed Guide

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