What to do if a nuclear disaster is imminent part 3

[Onyx]

Leave a small crawl-through entrance and more mass there that can be easily pulled in after you to seal it up. Have at least two gaps or 4-6" square air spaces, one high at one end and one low at the other. Use more if crowded and/or hotter climate. A small piece of cardboard can help fan fresh air in if the natural rising warmer air convection current needs an assist moving the air along. This incoming air won't need to be filtered if the basement has been reasonably sealed up, however any windows or other openings will require some solid mass coverage to assure they stay sealed and to provide additional shielding protection for the basement. More details on this in the next (#6) section.

With more time, materials, and carpentry or masonry skills, you could even construct a more formal fallout shelter, such as the lean-to shown to the right, but you should pile up much more mass than what little is shown here.

An effective fallout shelter constructed in a basement may reduce your radiation exposure 100-200 fold. Thus, if the initial radiation intensity outside was 500 R/hr (fatal in one hour), the basement shelter occupants might only experience 5 R/hr or even less, which is survivable, as the radiation intensity will be decreasing with every passing hour.



Adding mass on the floor above your chosen basement corner, and outside against the walls opposite your shelter, can dramatically increase your shielding protection. Every inch thicker adds up to more effective life-saving radiation shielding.

As cramped as that crawl space fallout shelter might seem, the vital shielding provided by simply moving some mass into place could be the difference between exposure to a lethal dose of radiation and the survival of your family.

The majority of people requiring any sheltering at all will be many miles downwind, and they will not need to stay sheltered for weeks on end. In fact, most people will only need to stay sheltered full-time for a few days before they can start coming out briefly to attend to quick essential chores. Later, they can begin spending ever more time out of the shelter daily, only coming back in to sleep. As miserable as it might seem now, you and your family can easily endure that, especially compared to the alternative.