C3I Shallow Underground Bunker

Hard Target Type: Shallow underground bunker

Function: National-level military command-and-control facility

Site Location: Within a large military complex on the outskirts of a large city (population 250,000)

Number of Stories or Levels: One

Number of Entrances: Four

Overburden: Five layers above roof:

3 meters of compacted soil

1 meter of reinforced concrete burster slab

3 meters of crushed/compacted rock

1 meter of reinforced concrete burster slab

3 meters of compacted soil

Thickness of:

Walls: 1 meter of reinforced concrete

Floor: 1 meter of reinforced concrete

Roof: 2 meters of reinforced concrete

Blast Doors: 0.5 meter of steel-lined concrete

C3I Basement Bunker

Hard Target Type: Basement bunker

Function: National-level command-and-control facility

Site Location: Within a military headquarters complex under a six-story Army Headquarters building in a heavily populated (750,000) urban area; civilian structures (hospitals, schools, embassies) all located within a 1 kilometer radius of the facility

Number of Stories or Levels: Two-level bunker underneath six-story building

Number of Entrances: Two

Thickness of:

Walls: Exterior, 2 meters; interior, 0.5 to 1 meter of reinforced concrete

Floor: 1 meter of reinforced concrete

Roof: 4.1 meters of reinforced concrete equivalent above upper bunker level

Blast Doors: 4 blast doors, sliding, steel-lined concrete

Shallow Accessible Bunker/Silo

Hard Target Type: Shallow buried “cut and cover” bunker

Function: Biological weapons (BW) agent storage and production

Site Location: Collocated within aboveground civilian bioproducts R&D and production complex; hilly terrain, vegetation; large civilian population within a 0.5 kilometer radius of the facility

Number of Stories or Levels: One

Number of Entrances: One

Overburden: 7 meters of compacted soil

Walls: 1 meter of reinforced concrete

Floor: 1 meter of reinforced concrete

Roof: 2 meters of reinforced concrete

Blast Doors: 0.5 meter overall; steel-lined concrete



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