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An Underground Fallout Shelter
3 other sections not shown
1.0 m Corner 15 Spacing 190 on edge 70 shows anchored Bar Size 15 basement floor basement shelter basement wall Below-ground shelter Beta Particles blocking piece boards Bottom Bar braces ceiling and walls cement Centre Chapter 9 concrete block wall cover doors earth rolls enhanced protection fallout protection fallout shelter Fallout Shielding Analyst Figure 51 floor joists foundation wall gamma radiation gamma rays ground level headroom hollow blocks inside kilograms per square lag screw lumber Mass kg/m2 Shelter millimetres minimum mortar Nail Nuclear Radiation plastic plywood Public lnformation Public Works Canada radioactive fallout Reinforced Concrete required mass thick roof sand sandbags shel shelter area Shelter Chapter shelter entrance Shelter location Shelter with Concrete shielding materials shown in Figure side Solid concrete blocks spaced 64 spaced Spacing 370 Spacing 420 square metre standard protection studs timber framing tion Top Bar trench ventilation