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Disaster Shelter |
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Shelter Page 2 More Pictures Technical Data Mechanical Drawings
The P10 is a totally self-contained 40-150 psi ribbed paraboloid (egg shape) underground disaster shelter designed to protect up to 10 people for long periods or 20 people for short durations such as during tornadoes. The product was specifically designed and developed to protect people during and after disasters such as tornadoes, hurricanes, earthquakes, storms, forest fires, power failures, nuclear power plant accidents, nuclear/chemical terrorism, and full-scale protracted nuclear, chemical and biological war. A tremendous effort has been made to think of every conceivable incident that shelterists could face in the P10 shelter. Many geometrical shapes were experimented with before finalizing the P10. The P10 is sold in three versions. The P10 Complete includes the fiberglass paraboloid structure, fiberglass entranceway, fiberglass/composite hatch, fiberglass HEPA filter, fiberglass septic tank, 550 gallon fiberglass water tank, fiberglass center floor beam, fiberglass counter, fiberglass shower wall, fiberglass battery housing, fiberglass carbon filter housing, manual flush up toilet, floor, one dozen 12 volt deep cycle batteries, air blower, fiberglass gray water tank, all wiring, all plumbing, etc. The P10 requires approximately 8 man hours hours to connect the entranceway and water tank. Design The P10 is a third generation disaster shelter designed and developed by Walton W. McCarthy, M.E., author of PRINCIPLES of PROTECTION, U.S. Handbook of NBC Weapon Fundamentals and Shelter Engineering Standards, which is the United State's bible on shelter engineering. He is the chief engineer of RADIUS ENGINEERING INC., with over 18 years experience designing "high- tech" disaster shelters. The book is distributed byThe American Civil Defense Association (TACDA) in Starke , Florida, and is known in the industry as P.O.P. The P10 was designed using CAD (computer aided drafting), CAE (computer aided engineering), and FEAM (3-dimensional finite element analysis and modeling). A shelterist in the P10 under heavy, direct effects from two 1-MT nuclear weapons, has at least the same probability of survival (99.7%) as a person living and working in peacetime. The paraboloid shape of the P10 allows it to be a true pressure vessel for resistance to high external pressure. The P10 shelter system is a third generation design and is based on 10 years field experience with McCarthy’s successful ES10 and TBC6 fiberglass underground shelters. The P10 is 70% larger than the ES10 and is much easier to enter and exit with its straight-in entranceway. With its removable hatch, it is able to accept equipment, and the P10 is an all fiberglass/plastic product with no steel parts. The hatch at ground level of the P10 is available in several different levels of threat resistance. Entranceway The geometry of the P10 allows the much preferred straight-in entranceway. This has the advantage of extremely quick and easy entry plus it provides the most efficient escape for moisture and heat. The hatch can also be unbolted to load large equipment inside the shelter through a 36-inch diameter entranceway. The entranceway also contains an Emergency Escape Manway (EEM) which allows a fiberglass manway cover to be removed from inside the entranceway so shelterists can dig their way 3 feet to the surface if debris falls on top of the hatch. If the shelter is located in ground subject to frost, the area around this EEM should be backfilled with crushed stone. Shelter Construction The paraboloid shelter and entranceway are made of structural fiberglass manufactured to underground storage tank standards of Underwriters Laboratory, American Society of Testing and Materials, and shelter engineering standards of PRINCIPLES of PROTECTION. Fiberglass was chosen as the optimum material because of its extremely high resiliency and corrosion resistance, plus its ability to be shaped into a compound curved structure. Fiberglass forms a complete vapor barrier which provides a dry atmosphere when placed below ground, and it has proven to be sound in the underground storage tank industry. In addition, one of the greatest characteristics of fiberglass is its ability to “remain intact” if overstressed. The inside of the shelter is smooth, curved, and white to create maximum brightness with minimal light. All of these facilities function without outside electricity through the use of twelve 12-volt, deep-cycle sealed batteries. The inside surface is easily cleaned with common detergents and is easily repaired.
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