Perhaps the most important element in designing an underground bunker is its location or sitting.
The position of the underground bunker must satisfy the structural requirements from the shelter standpoint along with the evacuation criteria of the client and the protectionof the mechanical systems. The immediate location and easy accessibility of a bunker has a significant bearing on its life saving ability during a crisis. Therefore, we recommend that all potential users should be able to reach the bunker within 5 minutes, and the bunker door should be secured within 10 minutes.
Generally stated, an underground bunker should be located:
- As deep underground as possible to protect from radiation, flying projectiles and debris.
Outside of areas known to be flood prone, including areas within the 100 year flood plain.
The bunker should be placed so that the evacuees have a short route to the entrance.
Away from any potential debris field and its emergency exits and air inlets can be extended on several sides of the building into zones that are free from debris and fire.
The bunker should have as much of its external walls against the ground as possible for protection from heat and for support provided by the surrounding soil.
Away from potential fuel concentrations, flammable materials, vehicles and hazardous materials.
Away from large objects and multi-story buildings, light poles, antennas, satellite dishes or roof mounted mechanical equipment.
The bunker should be made easily concealed.
The entrance to our underground bunker is composed of the entrance way to the bunker, the debris protection for the door. In addition to the main entrance way, all Hardened Structures underground bunkers are designed with either one or more of the following Emergency Exists:
Escape Shafts that lead through the bunker shell/wall directly to the outside and then run vertically up the bunker wall.
Escape Tunnels run horizontally away from the bunker for a distance of one and one half times the building height to clear any fallen debris.
Escape Chimneys that are air and blast proof emergency exits which lead up through the expected pile of debris from a collapsed structure. The chimney must be constructed to a height of at least ¼ of a buildings height when measured from the eves.
We have a variety of options for everyone’s needs and budget, contact us and our team of national experts will assist you in selecting the best underground or above ground bunker for your home.
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