After the family has settled in the shelter, the housekeeping rules should be spelled out by the adult in charge.

Sanitation in the confines of the family shelter will require much thought and planning.

Provision for emergency toilet facilities and disposal of human wastes will be an unfamiliar problem. A covered container such as a kitchen garbage pail might do as a toilet. A 10 -- gallon garbage can, with a tightly fitting cover, could be used to keep the wastes until it is safe to leave the shelter.

Water rationing will be difficult and should be planned carefully.

A portable electric heater is advisable for shelters in cold climates. It would take the chill from the shelter in the beginning. Even if the electric power fails after an attack, any time that the heater has been used will make the shelter that much more comfortable. Body heat in the close quarters will help keep up the temperature. Warm clothing and bedding, of course, are essential.

Open flame heating or cooking should be avoided. A flame would use up air.

Some families already have held weekend rehearsals in their home shelters to learn the problems and to determine for themselves what supplies they would need.

Few areas, if any, are as good as prepared shelters but they are worth knowing about.

A family dwelling without a basement provides some natural shielding from fallout radiation. On the ground floor the radiation would be about half what it is outside. The best protection would be on the ground floor in the central part of the house.