Why Were Fallout Shelters Built During The Cold War?To Allow People To Cross The Berlin Wallto Hide Defectors From The Militaryto Provide Safety In Case Of A Nuclear Attackto Provide An Escape From Daily Worries. Fallout shelters were built for several reasons: Precast concrete framing made structures rigid enough to.

Fallout shelters were built for several reasons: Open at both ends, these allowed cold air flow beneath buildings and insulated permafrost from the heat inside. Government’s top priorities was to create a network of fallout shelters.