Underground Bunkers
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Underground Bunkers

Things to consider in the design of a storm shelter or bunker

• Be able to withstand violent earth movement such as severe earthquakes; high velocity winds such as tornados or hurricanes
• Invasion from larger mobs or guerrilla type of activity
• Heavy overpressures from nuclear blast
• All types of radiation
• Wild fires; and air contamination from fallout, chemical and biological war gasses

* Interesting to note NBC fallout shelters complete satisfy all requirements

Does the shelter provide critical radiation attenuation properties for NBC fallout shelters?

• Narrow entrance and exit
• Entrances with both vertical and long horizontal components connected with a 90-degree turn, assuring the proper attenuation of gamma radiation.
• Long horizontal runs providing an area in the entrance for the required 6 feet of shielding assuring protection from initial radiation.
• Shielding over a bomb shelter chamber equivalent to 4 feet of dirt cover for gamma radiation, and at least 8 feet of dirt cover in blast areas, for shielding against initial radiation.

Is the shelter constructed of a material that will provide proper blast/earthquake protection?

• Proper depth of cover for MAXIMUM blast protection (depth of overhead cover equal to the diameter of the shelter) assuring blast protection from overpressures to 200 psi.
• Proper depth of cover to achieve stable and comfortable interior air temperatures, assuring survival from extreme weather conditions.
• Arched ceilings that will provide ‘Earth arching’, assuring protection from catastrophic failures associated with soil burdens and high blast overpressures.
• Construction material that will MOVE and BEND with earth motion, assuring protection from catastrophic failure associated with earthquakes and ground shock from nuclear blasts.
• Interior storage of primary water supplies and septic systems (no water or septic tanks at or near ground level), assuring protection from ground slap associated with nuclear blast.
• Steel air pipes and doors, assuring protection from wild fires, thermal pulse, high winds & flying objects.
• Blast valves for all penetrations (Air pipes, Exhausts, Wiring, Antennas, etc.) assuring blast protection and continual positive air pressure in the event of chemical or biological attack.

Does the shelter provide adequate ventilation and air filtration capabilities?

• Both electrical and manual (backup) functionality, assuring continual air supply in long term power failures.
• Adequately sized air vents (4” – 6” diameter), assuring adequate supply of air and temperature control.
• Metered air volume, assuring critical residence time within the high efficiency particulate (HEPA) filter when processing chemical and biological war gasses.
• Pre-filters placed in line prior to processing of NBC contaminates, assuring protection of the HEPA filter from contaminates such as smoke, dirt, insects and larger radioactive particles.
• Ventilation and air filtration systems that have been tested and documented by a nationally recognized facility, assuring proper filter densities, air volumes, metering devices, blast protection, thickness of hose materials and metals and interior paints of the gas canister.

Can this shelter be customized to your needs?

• Localized threats, water tightness, size, depth of cover, interior furnishings.
• Customized entrances and floor plans.
• Handicap entrances are available.
• Space interior floor plans w/ areas for food storage, water and other supplies.
• Ability to 'shut down' air supplies for 5 hours if necessary based on outside activity.
Bunkers for Sale
Or Call: (855) SBU-NKER

Options for Bunkers

  • NBC air filter system
  • Andair Ventilation System
  • R23 spray insulation
  • Paxcon 2100 bullet resistant coating on the exterior
  • Ballistic spray foam on the interior
  • Can be built to look like a storage shed in your back yard
  • Generator
  • Wind turbines
  • Solar Panels
  • Septic and Water tanks
  • Heat and a/c dehumidifier
  • Bathroom area
  • Kitchen area
  • In floor storage area
  • Extra bunks
  • Security system
  • Blast valves
  • Gun safe
  • Grow room
  • Ham communication radio
  • LED lighting
  • Hardwood floors
  • Jetted tub
  • Composting toilet
  • Drywall
  • Toilet
  • Handicap accessible
  • TV/DVD
  • Green Bed
  • Microwave
  • Propane option includes water heater and oven
  • Water filtration system



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