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This concrete block shelter will provide low-cost protection from the effects of radioactive fall out. It is intended to be installed belowgrade in a basement. Its principal advantages are simple design, speed of construction, ready availability of low-cost materials, and adequate protection against fall out radiation. By increasing the ceiling height to 6 feet or more, it could also serve as a dual-purpose room.
Space and Occupancy
This shelter has about 52 square feet of area and 260 cubic feet of space and will provide shelter for four persons.
Availability and Cost of Materials
Most of the materials required to build this concrete block shelter are obtainable at local concrete-block plants and lumber yards. The cost of the materials for the basic shelter is estimated at $75 per shelter.
Fall Out Protection Factor
In most residences, the shelter will provide a protection factor of at least 100.
Although this shelter was designed primarily to provide fall out protection, it would also provide some protection from flying debris associated with blast.
Natural ventilation is provided by the airspace left at the entranceway after emergency closure, and the air vents in the shelter wall.
Estimated construction time for the basic shelter is less than 20 man-hours.
Structural Life Expectancy
The life expectancy of the shelter would be about the same as most types of residences.
If you have space in your basement, setting up a concrete block shelter is very practical. This document will teach you exactly what you need to do in order to make one.
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