

The shelter should be located at least 50 feet away from any large buildings, because nuclear explosions can cause far-reaching firestorms and damage structures well past ground zero. To begin, you should stake the outlines of your trench with shafts of wood. This page provides instructions for building a Kearny Air Pump (KAP), a simple yet effective way of circulating air while allowing minimal, safe amounts of radiation into the shelter. Homemade air ventilation - Because our bodies give off water vapor, the insides of a fallout shelter would quickly become unbearably hot without proper ventilation.It may be necessary to stay inside a fallout shelter for as much as two weeks after a nuclear attack, so sufficient amounts of water will guarantee survival.

Water - Fifteen gallons of drinking water is recommended to last people inside the shelter as long as possible.
