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مهم جداً: هل نحتاج لملاجئ وبدرومات تقاوم القصف في المنشآت المعاد بنائها

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  1. [51]
    eng.amani
    eng.amani غير متواجد حالياً
    عضو فائق التميز
    الصورة الرمزية eng.amani


    تاريخ التسجيل: Dec 2006
    المشاركات: 6,461
    Thumbs Up
    Received: 122
    Given: 101
    كان الحديث عن الملاجئ محورا من محاور نقاش اليوم في ورشة العمل داخل النقابة
    كانت هناك اصوات متعددة ضد انشاء الملاجئ
    وكما قالوا علينا التعلم من تجاربنا
    فقد كانت الملاجئ في جنين مقابر جماعية
    ومذبحة قانا كانت قد طالت احدى الملاجئ ايضا يومها
    ولكن اتفق الجميع على وجوب الزام كل من يبني منزلا على بناء غرفة محمية بمواصفات معينه داخل المنزل لحماية الناس
    ولازال النقاش مستمرا

    0 Not allowed!








  2. [52]
    Abo Fares
    Abo Fares غير متواجد حالياً
    مشرف


    تاريخ التسجيل: Mar 2008
    المشاركات: 9,248

    وسام الاشراف

    Thumbs Up
    Received: 344
    Given: 291
    اقتباس المشاركة الأصلية كتبت بواسطة eng.amani مشاهدة المشاركة
    كان الحديث عن الملاجئ محورا من محاور نقاش اليوم في ورشة العمل داخل النقابة
    كانت هناك اصوات متعددة ضد انشاء الملاجئ
    وكما قالوا علينا التعلم من تجاربنا
    فقد كانت الملاجئ في جنين مقابر جماعية
    ومذبحة قانا كانت قد طالت احدى الملاجئ ايضا يومها
    ولكن اتفق الجميع على وجوب الزام كل من يبني منزلا على بناء غرفة محمية بمواصفات معينه داخل المنزل لحماية الناس
    ولازال النقاش مستمرا
    هذا الكلام السليم.. وهو ما ذكرناه تماماً بضرورة تجهيز كل مبنى بملجأ ذو مواصفات خاصة (من حيث الجدران المسلحة والبلاطة القوية) في طابق القبو يلجأ إليه جميع سكان المبنى عند الضرورة..

    مع تحيــــــاتي..

    0 Not allowed!




  3. [53]
    مهاجر
    مهاجر غير متواجد حالياً
    مشرف عــــــــام
    الصورة الرمزية مهاجر


    تاريخ التسجيل: Jun 2003
    المشاركات: 8,679
    Thumbs Up
    Received: 298
    Given: 258
    السلام عليكم

    ما زال النقاش مستمراً حول انشاء الملاجيء من عدمها ... سوف نترك هذا الموضوع هنا الى يو م السبت قبل نقله لقسم العمل للإنتهاء من هذا المشروع

    جزاكم الله خير

    0 Not allowed!




    أعــــــوذ بالله من نفــــــحة الكبرياء




    http://www.arab-eng.org/vb/uploaded2...1279788629.swf

    "إن العـمل القليل المســتمر خير من العـمل الكثير المـنقطع.."


    حسبنا الله ونعم الوكيل

  4. [54]
    المهندس محمد زايد
    المهندس محمد زايد غير متواجد حالياً
    عضو متميز


    تاريخ التسجيل: May 2005
    المشاركات: 887
    Thumbs Up
    Received: 84
    Given: 0
    اقتباس المشاركة الأصلية كتبت بواسطة eng.amani مشاهدة المشاركة
    كان الحديث عن الملاجئ محورا من محاور نقاش اليوم في ورشة العمل داخل النقابة
    كانت هناك اصوات متعددة ضد انشاء الملاجئ
    وكما قالوا علينا التعلم من تجاربنا
    فقد كانت الملاجئ في جنين مقابر جماعية
    ومذبحة قانا كانت قد طالت احدى الملاجئ ايضا يومها
    ولكن اتفق الجميع على وجوب الزام كل من يبني منزلا على بناء غرفة محمية بمواصفات معينه داخل المنزل لحماية الناس
    ولازال النقاش مستمرا
    من الجيد ان يتخذ الا مر كشكل الزامي .. هذا بالفعل هو المطلوب مع توسيع الاقتراحات لتكون على شكل دور كامل او على الاقل نصف طابق . .. لتسع اكبر عدد ممكن ولاكبر فترة ... وفقكم الله .

    0 Not allowed!


    قال صلى الله عليه وسلم:
    "
    أحب الناس إلى الله أنفعهم للناس ، وأحب الأعمال إلى الله عز وجل سرور يدخله على مسلم ، أو يكشف عنه كربه أو يقضي عنه ديناً أو يطرد عنه جوعاً ، ولأن أمشي مع أخ في حاجه أحب إليَّ من أن أعتكف في هذا المسجد - مسجد المدينة - شهراً ومن كف غضبه ستر الله عورته ، ومن كتم غيظه ولو شاء أن يمضيه أمضاه ، ملأ الله قلبه رجاءً يوم القيامة ومن مشى مع أخيه في حاجة حتى تهيأ له أثبت الله قدمه يوم تزول الأقدام "
    صححه الألباني الأحاديث الصحيحة رقم (906).

  5. [55]
    علي محمود فراج
    علي محمود فراج غير متواجد حالياً
    عضو تحرير المجلة
    الصورة الرمزية علي محمود فراج


    تاريخ التسجيل: Sep 2007
    المشاركات: 2,897

    وسام الشكر

     وسام كبار الشخصيات

    Thumbs Up
    Received: 102
    Given: 109

    تفاصيل إن شاء الله يمكن الاستفادة منها

    جزاكم الله خيرا و بارك جهودكم و نفع بكم ..
    هذه تفاصيل إن شاء الله يمكن الاستفادة منها :
    The CAT25 Fiberglass Underground
    Disaster Shelter / Storm Shelter / Bomb Shelter


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    The CAT25 is a totally self-contained 40-150 psi structural fiberglass multiple elliptical torrid underground disaster shelter designed to protect 25 adults for long periods or 50 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 CAT25 shelter. Many geometrical shapes were experimented with before finalizing the CAT25.
    The CAT25 includes the fiberglass toroidal structure, fiberglass entranceway, fiberglass/composite hatch, MCAS air filtration system for nuclear-biological-chemical environments, septic system, fiberglass water tank, fiberglass flooring, fiberglass counter, fiberglass shower walls, fiberglass battery housings, two toilets, Forty 12- volt deep cycle batteries, air blower, gray water tanks, all wiring, and all plumbing, etc.
    The CAT25 requires approximately 8 man-hours hours to connect the entranceway, water tanks, and septic tank.

    DESIGN

    The CAT25 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, Fifth Edition, 2002, which is the United State's bible on shelter engineering. He is the principle engineer of RADIUS ENGINEERING INC., with over 30 years experience design­ing "high-tech" disaster shelters.
    The book is distributed by The American Civil Defense Associa­tion (TACDA) in Starke , Florida, and is known in the industry as P.O.P.
    The CAT25 was designed using CAD (computer aided drafting), CAE (computer aided engineering), and FEAM (3-dimensional finite element analysis and modeling). A shelterist in the CAT25 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 shape of the CAT25 allows it to be a true pressure vessel for resistance to high external pressure. The CAT25 shelter system is based on 20 years field experience with McCarthy's successful P6, and P10 fiberglass underground shelters.
    The CAT25 is easy to enter with a 45 degree sloped stairwell entranceway. The hatch at ground level of the CAT25 is produced only in Class IV. The multiple toroid design allows the CAT25 to bend during ground shock, very unlike a round or cylindrical tank.
    ENTRANCEWAY

    The CAT25 has a 45 degree stairwell entranceway which also contains the MCAS air filtration system. The entranceway also contains an Emergency Escape System. In the event that heavy debris falls on the hatch cover and the radios are not able to bring help to clear the hatch, and the debris can not be burned off, emergency escape procedures can be implemented.
    The CAT25 uses a battery operated or a hand operated hydraulic pump to power a hydraulic cylinder to force the sliding hatch open.
    SHELTER CONSTRUCTION

    The 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 compoundly curved structure. The 40 psi (pounds per square inch) external pressure resistance, with no earth arching, is constant over 100 years and does not have to be de-rated like steel each passing year due to corrosion.
    Fiberglass also 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 industries. 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 12-volt, deep-cycle batteries. The inside surface is easily cleaned with common detergents and is easily repaired.
    LEACHING SEPTIC TANK

    The CAT25 comes with a 500 gallon fiberglass high pressure leaching septic tank with a gravity dish. The septic tank has a duration of 12 months with 25 people. It is easily pumped out with a manual septic pump from the ground surface by removing the septic tank access cover.
    SHELTER FACILITIES

    The CAT25 contains 4206+ cubic feet (31,463 gal) with headroom from 7'-6" to 8'-8". This allows for normal living and a very spacious feeling. There is ample light for reading anywhere in the shelter supplied by white 60,000 hour LED lights.
    Fresh filtered air is brought into the shelter by a three MCAS filtration units each having a 12-volt 40,000-hour air blower designed to operate 24 hours per day for approximately 30 days and supplies many times the breathing volume of air required by adults and results in a complete air change every 35 minutes. This system has the advantage of maintaining constant shelter temperature, constant shelter oxygen levels, constant shelter carbon dioxide levels, and constant shelter mois­ture levels, plus it prevents overheating which is common with manual air blowers in warm climates.
    Exhausting of hot, moist, spent air inside the shelter is facilitated through air outlet manifolds in the shelter ceiling. This is the most efficient geometry for exhausting spent air, especially when resisting intruder assaults is a critical part of the hatch design.
    Forty 12-volt deep-cycle batteries are stored in a fiberglass battery box under the floor. The normal loss of battery power is approximately 1.5% per month. A photovoltaic panel (solar panel) can be used to maintain the batteries if desired. A 50-foot battery charg­ing cable can also be connected from the batteries in the shelter to the battery in a car to allow the car alternator to charge the batteries.
    MCAS 120 "Multi-Chamber Air Sterilization" AIR FILTRATION





    1. Contaminated air enters the air intake hole on the elliptical hatch dome. It then travels around under the hatch dome where the air velocity slows allowing rain and heavy particles to fall out.
    2. Contaminated air then travels into the vertical pipe under the hatch dome and past the ball valve.
    3. The contaminated air then travels into the stainless steel micronic washable screen/pre-filter removing more of the heavier particles.
    4. The air then travels into the Gas Agent Test Housing where the air can be tested using the M256A chemical agent test kit. A 4 inch white pipe plug is removed to insert the test kit.
    5. HEPA FILTER SLEEVE: The contaminated air then travels into the core of the HEPA/Carbon filter designed to remove 99.99% of particles that are 0.3 u (microns) and larger. This is where the carriers of biological warfare agents are removed. The photo shows the HEPA/Carbon sleeve.
    6. The air then travels into the activated carbon layer to remove the radioactive iodine gas.
    7. The next layer is made of Whetlerite/TEDA carbon to remove any chemical warfare agents.
    8. Ultraviolet: Bulb Over View Port The air then passes through a filter fabric to remove any carbon fines.
    9. The last stage of filtration after the filter sleeve is the ultraviolet light chamber were viruses and bacteria are exposed to more than 11,000 microwatts seconds/cm2 killing all airborne viruses and bacteria.
    10. The filtered air then enters the air blower centrifugal reverse curve motorized impeller and into the shelter.
    11. As the air blower pumps filtered air into the shelter, the shelter is slightly pressurized. This positive pressure plus the heat generated in the shelter from body heat, cooking, and showering, forces the spent air to the highest point in shelter near the top of the entranceway.
    12. At the top of the entranceway is the air outlet screen where the spent air passes through and up the air pipe and out of the elliptical hatch dome air outlet hole. Some air will pass through and around the hatch cover base because the hatch cover is not intended to be air-tight.
    13. As the air passes around the underside of the hatch dome is equilibrates with the outside air. This results in little or no thermal signature because there is little difference between the spent air and ambient air.


    HEPA Filter Ultraviolet View Port Bulb




    HEPA Filter Sleeve Removes Biological Warfare Agents




    Gas Agent Test Housing

    STORAGE

    There are 482 cubic feet of storage (3615 gal.) under the floor. In addition there are 178 cubic feet of storage (1331 gal.) under the lower bunks that allow sixty 5-gallon food tanks. A 150-gallon fiberglass alcohol tank is located under the floor near the kitchen counter.
    The 5 gallon food tanks are used to store grain, powdered milk, salt, sugar, beans, TVP, honey, etc. and hold approximately 3000 lbs. of food, forming a 6 month food supply for 25 people. The material and thickness of these food tanks allows the much preferred carbon dioxide packing of food as opposed to the nitrogen packing of food.
    The methanol tank was sized to boil 3000 gallons of water plus all the food in sixty 5-gallon food tanks.
    BATTERY BANK


    The CAT25 has 4 battery banks containing 10 batteries stored under the floor.
    HATCH DOME ON GROUND AND BASEMENT ENTRY




    The hatch dome at ground level is aerodynamically smooth.
    The 24 x 26 inch manhole allows very large people with a 75-inch waist to enter the shelter quickly. The angle of incidence of the hatch dome is only 20 degrees to allow flying debris to glance off. The hatch dome and hatch cover are designed to resist a non-shattering 3-inch diameter hail ball falling straight down at terminal velocity (87 mph) and impacting directly at a full 90-degree angle of incidence.
    The hatch dome is also designed to resist a non-shattering 3-inch diameter hail ball traveling horizontally at 150 mph. In addition, the hatch dome can resist a solid 2 x 4 wooden stud impacting the hatch dome like a battering ram or javelin at 30 to 350 mph depending on the hatch class. Some debris, depending on the size, shape, angle of incidence, and mass, may cosmetically damage the hatch dome. This can be easily repaired with fiberglass repair kits available at marine and automotive supply stores.
    The hatch dome is made of a material called "Combat Composite" which is a structural fire-and bullet-resistant laminate developed by Radius Engineering Inc. The hatch dome is also designed to protect the shelter from a fire reaching 1700oF for one hour while maintaining its structural integrity in compliance to ASTM E119. This design and material makes the CAT25 very stealthy. It produces little or no thermal signature, little or no metallic signature, and little or no radar signature. When the shelter is installed, all that can be seen is the dark army-green hatch dome at ground level. This makes it almost impossible to be detected by modern target acquisition equipment. It is designed to resist 350-mph winds and more than 8.5 on the Richter Scale.
    Although the hatch dome is not impenetrable, it is specifically designed to resist seven basic assaults from people trying to break into the shelter in compliance to P.O.P.

    SLIDING HATCH AT GROUND LEVEL ABOVE


    BASEMENT ENTRY DOOR WITH L.E.A.T. (LETHAL EXPOSIVE ANTI-TAMPERING) AND TRIPLE AXIS SEISMIC JOINT ON BASEMENT WALL CONNECTION

    The hatch dome and hatch cover are manufactured according to The National Institute of Justice NIJ standards from Class 0 up to Class IV (standard on CAT25) to resist penetration by various threats. The material and thickness vary as the threat level increases. The classes listed below are based on resisting 90% of all of the bullet types at various velocities listed known as (V-90). The barrel length, feet per second (fps) or meters per second (mps) for the test are noted.
    NIJ Threat LevelHatch Material (V-90)Threat/Bullet TypeBarrel Length (inches)fpsmpsClass 0Structural Fiberglass-self-extinguishing (standard)Light Hammer and hatchet assaults, 3 in. dia. Hail @ 87-mph vertical, 150-mph horizontal
    2 x 4 stud @ 30-mph NANANAClass ICombat Composite
    self-extinguishing.22 Cal. 40 Gr. LR
    .25 Cal Auto 71 Gr. FMJ
    .32 Cal. Auto 71 Gr. FMJ
    .380 Cal. Auto 88 Gr. JHP
    .38 Cal Special Lead 158 Gr. RN
    .38 Cal Special 158 Gr. SWC
    2 x 4 stud @ 70-mph6
    .........
    732Class IVCombat Composite
    self-extinguishing30.06 A.P. M-2
    7.62 mm NATO A.P. 308 Win
    SS 109 FN NATO .223 (5.56mm)
    7.62 x 39 Russian/Chinese A.P.I.
    2 x4 stud @ 350-mph26
    .................
    SHELTER DEFENSE

    The CAT25 is not impenetrable but is difficult to break into while shelterists are inside.
    The CAT25 underground bomb shelter is extremely difficult to break into.INTRUDER ASSAULTCAT25 RESISTANCE1. Intruder trying to break into hatch using sledgehammer, hatchets, and guns.Class 0 Hatch resists light hammer and hatchet assaults Class I -IV Hatch resists all assaults2. Intruder trying to clog the air intake/outlet to suffocate the shelterists thus forcing them outside.Shelterists can open up hatch and reach over to unclog air intake or wait in safety in the shelter for many hours in sealed shelter atmosphere while the intruder is exposed to the outside danger.3. Intruder trying to suffocate shelterists by creating fire on top of the hatch thus forcing the shelterists outside.All classes of the hatch are resistant to fire and the shelterists can breathe normally inside the shelter based on sealed shelter atmosphere.4. An intruder trying to run over the shelter or hatch with an automobile or truck.If this vehicle becomes a threat, the Emergency Escape Manway can be used.5. An intruder trying to drown shelterists by forcing water into the air inlet/out.The air inlet on the hatch dome are baffled to prevent this type of assault.6. An intruder trying to attach rope onto the hatch or air manifolds to damage or pull out of ground.The hatch dome is a smooth design with no projections to easily attach to.7. An intruder using a cutting torch to cut the hatch open.The hatch is impervious to a cutting torch.8. All attacks aboveRelease of tear gas through hatch. Details are available only to actual customers.
    Category F0 to F5 Tornado Wind SpeedsTornado F-ScaleF0F1F2F3F4F5Wind speed (mph)40-7273-112113-157158-206207-260261-318Simpson Hurricane Scale Category 1 through 5 Hurricane Scale-Simpson Cat 1Cat 2Cat 3Cat 4Cat 5Wind speed (mph) 74-9596-110111-130131-155155+Storm Surge- Ft above normal 4-56-89-1213-1818+
    Hatch Cover Interior and Exterior Lock

    The hatch slides open and closed hydraulically powered by a 12 volt hydraulic power unit located under the floor of the shelter. The hatch slides and locks wherever it stops. The remote radio controlled transmitter has a button to slide the hatch closed and open. When inside the shelter, the hatch can be closed by standing on the floor and activating the transmitter. This allows entry without human power to move the 250 lb hatch cover. The hatch cover is recessed in the hatch dome and protected from flying debris for 320 degrees. The hatch cover is designed to resist 5300 lbs. of uplifting force caused by the negative pressure of a tornado or explosion and 42,080 lbs of overpressure.
    SEISMIC JOINT

    This elliptical triple axis seismic joint allows the entranceway free and independent movement from the main shelter. The entranceway is located within the frost line, while the shelter is well below the frost line. This creates tremendous stresses during winter months when the entranceway is forced up 0.5 - 1.25 inches due to frozen ground. The seismic joint removes these stresses by allowing vertical movement of the entranceway and also allows the top of the entranceway to move laterally to maintain structural integrity during rolling ground motion from severe ground shock.
    SEALED SHELTER ATMOSPHERE


    When ground fires are present around the hatch, the air blower should not be turned on to bring in fresh air. During this time, the shelterists must breathe in a sealed shelter atmosphere. The safe duration time is based on a 3% carbon dioxide limit. The time it takes for the shelter atmosphere to reach this limit is a function of the number of shelterists, degree of physical activity of the number of shelterists, and the volume of the shelter above the floor. This duration is shown above for adults performing mild work.
    OVERPRESSURE CHOKING


    The CAT25 does not use blast valves. Instead, it uses the "overpressure choking" which has no moving parts. The inlet air valve and outlet air valve are sized to prevent excessive pressure from developing inside the shelter. This is a combination of what is known as the Ideal Gas Law combined with Bernoulli's Law. These two theories combined state that two volumes of air (outside air volume and shelter air volume) with differing pressure will reach equilibrium or "equilibrate" over a period of time. This period of time depends on the level of overpressure, volume of the shelter, diameter and length of the air inlet and outlet pipe, resistance of air filter, and duration of the overpressure which is very short and constantly decreasing.
    Simply stated; the air inlet and outlet are sized so that there is not enough time for the two volumes of air to equilibrate. The outside pressure at maximum duration is simply not able to equilibrate through two 4-inch diameter air inlet and outlet within the overpressure duration time.
    PLUMBING SYSTEM


    The water supply system is based on a 12-volt high pressure automatically regulated water pump and stainless steel pressure tank to maintain system pressure. The pump produces enough pressure to force the water through the 0.3 micron absolute ceramic water filter and supplies approximately 0.5 gallons per minute at the sink faucet and shower head in the bathroom. Two batteries will supply enough power to pump 1000 gallons of filtered water to the shelter. The fiberglass counter contains a stainless steel sink where dishes and clothes are washed. The sink and shower drain into a 5-gallon gray water tank to supply flushing water to the toilet.
    Fittings- The shelter entranceway contains two 3/4-inch NPTF thru-hull couplings five feet below ground level, for connection to the water tank and five ¾ inch NPTF threaded outlets one foot below ground level for bring­ing in antenna lines, a phone line, a power sup­ply, and a 12-volt power cable from a solar panel to recharge the batteries. There are two additional 1-inch diameter NPTF fittings located in the hatch dome so HAM and Scanner antennas can be installed. Plugs are provided to be in place when antennas are not in place.
    Toilet- The flush-up toilets are powered by a manual hand pumps and uses water from the gray water tank. The sewage is pumped up to the leaching septic tank through an internal/external hose.
    Shower- The two fiberglass bathroom floors allows all water from the shower head to drain into the shower gray water tank which is transferred to the sink using a manual foot pump. The gray water is used to flush the toilet. Chemical or nuclear decontamination is per­formed in this shower.
    RADIATION SHIELDING


    Radiation shielding from overhead in the CAT25 is provided by 8.5 feet of earth at the crown of the shelter ceiling. With a TRS (Total Rems in Shelter) of 5 to less than 1 rem at 20 psi, a person would receive a maximum acute radiation dose from overhead and through the entranceway for neutron and gamma radiation equivalent to less than a mammography x-ray. This dose is based on a 500 KT air burst nuclear weapon, which produces a higher neutron radiation dose than the larger MT weapons, plus fallout doses from a 1 MT surface burst nuclear weapon to maximize the fallout gamma radiation dose.

    Based on the worst cancer cases (leukemia) from the Hiroshima and Nagasaki victims, a 10-rem dose may increase the cancer rates from the cur­rent rate of 352/100,000 up to 355/100,000. It should be kept in mind that the Hiroshima victims were totally unprepared and uneducated. They were malnourished and already suffering from many diseases during a critical wartime period where food, medical supplies, and other necessi­ties were in short supply. In addition, they were not only exposed to heavy, acute external radia­tion doses but also internal radiation doses from eating contaminated food and inhaling radioactive fallout. Educated shelterists can avoid such damaging effects and can determine the radiation levels with a simple radiation survey meter.
    SHIPPING AND INSTALLATION


    U.S. citizens have a legal right to install a shelter. Under the second amendment of the United States Constitution, U.S. citizens are guaranteed the right to bear arms to provide protection in life threaten­ing situations. Tornadoes, earthquakes, nuclear, biological, and chemical warfare fall under this amendment as life threatening forces. A disaster shelter falls under this classification as a defensive arm.
    The CAT25 is shipped on a special trailer requiring overwidth permits. The entranceway, water tanks, and septic tank are shipped and a second truck.



    EXCAVATION

    The customer hires a contractor to dig a hole (approximately 600 yards) with a base dimension of 18 feet wide x 48 feet long at a depth of 19 feet. The top of the hole should be larger to allow for sloped walls. The excavation usually requires one full day. A 64,000 pound excavator or larger should be used to dig the hole. A crane is used to lift the CAT25 off of the Radius truck and into the hole. If the shelter is installed in a flood zone, the shelter should be installed by berming so the hatch is one foot above the 100-year flood plain or storm surge. Berming can also be used if the shelter is installed in a location which has ledge.
    SHELTER INSTALLATION (summary)

    1) An excavator is used to dig the hole with 6 inches of crushed stone in the center of the floor of the hole.

    2) The shelter is lifted off of the truck and into the hole by a crane.

    3) The shelter is leveled.

    4) Connect two underground water hoses to the shelter and one 2 in underground septic hose to the shelter.

    5) The shelter is backfilled and compacted with Jumping Jack compactor approximately in one foot increments to 3 ft. Always compact in one foot lifts to the wall of the excavated hole.

    6) The Sloped Entranceway is craned into the hole and bolted to the flange on the shelter using 36 ½ inch bolts. Check the level on the hatch dome.

    7) Connect the gravity cable and gravity dome.

    8) Place a wooden column under the entranceway to hold it in place while backfilling or lean it on the edge of the excavated hole.

    9) The shelter is then backfilled with 350 yards of ¾ minus crushed stone, pea stone, or sand to 2 foot below the shelter ceiling. Backfill and compact and adjust the water and septic hoses during backfilling and compacting.

    10) Gravel is placed in a 5 ft. diameter area where the water tanks will set. The water tanks are lifted into the hole and leveled on this gravel. Connect two underground hoses from the water tank to the shelter.

    11) The air outlet manifold and pipes are connected

    12) Backfilling and compacting continues to 30 inches above the top of the shelter crown.

    13) The 500 gallon septic tank is lifted into place and leveled and the underground septic hose is connected. Backfill and compact with spoil to 12 inches below the leach holes on the septic tank. Approximately 10 yards of stone or pea stone for the leaching field should be placed around the septic tank (12 x 12 x 2 ft deep) and 2 yards around the emergency escape manway.

    14) When the backfilling reaches 12 inches below ground level, all the antenna cables, telephone lines, 12 volt lines etc. are connected.

    15) Backfill­ing and compacting continues to the original ground level. Back­filling usually requires approximately 16 hours.
    SHELTERS BUILT ON SITE VS. COMMERCIAL SHELTERS

    Advantages of purchasing a commercial underground shelter:

    1) With shelters built on site, cost overruns are the rule, not the exception. Many well-intended handymen and contractors have constructed shelters which ended up running well over budget and still did not produce an operable shelter. When a shelter is built on site, you really don't know what you will end up with. The CAT25 shelter allows people to deal with known costs and a proven shelter system.

    2) Shelters built on site require extensive, time consuming, and expensive research to develop a "shelter system" capable of providing dependable life support—fresh filtered air, blast protection, clean water, light, corrosion resistance, toilet facilities, air filtration for radioactive fallout, chemical and biological agents, etc., all of which should meet - PRINCIPLES of PROTECTION, U.S. Handbook of NBC Weapon Fundamentals and Shelter Design Standards, by Walton McCarthy, is available for $65.00 from The American Civil Defense Association, (TACDA) Starke, FL (800-425-5397). Even good architects or mechanical and civil engineers, do not have the expertise to develop a good dependable shelter system especially when it must function without local electricity. The CAT25 shelter system is based on the ES10 and P10 shelter, which has over 20 years proven field experience and complies with all P.O.P. standards.

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  6. [56]
    علي محمود فراج
    علي محمود فراج غير متواجد حالياً
    عضو تحرير المجلة
    الصورة الرمزية علي محمود فراج


    تاريخ التسجيل: Sep 2007
    المشاركات: 2,897

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    Products

    http://www.bomb-shelter.net/products
    Products






    • Underground Shelters
    • Underground Power Plants
    • Air Sterilization Units
      • MCAS 120 Whole House Air Sterilization
      • .....................................
      • The P10 Underground Disaster Shelter / Storm Shelter / Bomb Shelter

        FEATURESCOMPLETELY SELF-CONTAINED PROTECTION FROMStructural Fiberglass ParaboloidTornadoes MCAS Air Filtration SystemNuclear WeaponsToilet, Shower and Septic SystemChemical Weapons/AccidentsBattery OperatedNuclear Power Plant AccidentsDecontaminationNuclear/Chemical TerrorismCommunications SystemPower Plant FailuresLightingForest Fires and Famines



        External View

        Internal View


        The P10 is a totally self-contained 40-150 psi paraboloid (egg shape) underground disaster shelter designed to protect 10 adults 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 includes the fiberglass paraboloid structure, fiberglass entranceway, fiberglass/composite hatch, MCAS filtration system, 45 gallon fiberglass septic tank, 500 gallon under floor water tank, fiberglass counter, fiberglass shower wall, fiberglass battery housing, toilet, floor, eighteen 12- volt deep cycle batteries, air blower, gray water tank, all wiring, all plumbing, etc. The P10 requires approximately 1 man-hour to connect the entranceway to shelter.
        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, Fifth Edition 2002, which is the United State's bible on shelter engineering.
        He is the chief engineer of RADIUS ENGINEERING INC., with over 30 years experience designing “high-tech” disaster shelters. The book is distributed by The American Civil Defense Association (TACDA) in Draper, UT 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 TBC6, and ES10 fiberglass underground shelters.
        The P10 is much easier to enter and exit with its offset entranceway. The hatch at ground level of the P10 is available in several different levels of threat resistance. The geometry of the P10 allows the much-preferred offset entranceway. This has the same radiation geometry shielding as a 90-degree entranceway plus it provides the most efficient escape for moisture and heat.
        SHELTER CONSTRUCTION




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  7. [57]

  8. [58]
    التواتي
    التواتي غير متواجد حالياً
    عضو فعال جداً
    الصورة الرمزية التواتي


    تاريخ التسجيل: Sep 2005
    المشاركات: 336
    Thumbs Up
    Received: 1
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    assalam alakum

    my brother Ali Mahmoud
    your reply is so great
    thanks for information

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    لـكل شئ إذا مـا تـم نقصــان . . . فلا يُغر بطيب العيش إنسـان
    هي الأيام كما شاهدتها دولا . . . فمن سره زمن ساءته أزمان

    أبو أحمد

  9. [59]
    علي محمود فراج
    علي محمود فراج غير متواجد حالياً
    عضو تحرير المجلة
    الصورة الرمزية علي محمود فراج


    تاريخ التسجيل: Sep 2007
    المشاركات: 2,897

    وسام الشكر

     وسام كبار الشخصيات

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    the survival center

    http://survivalcenter.com/UG.html

    Under Ground & Above Ground Shelters &
    The New Climate Change Protection Complexes


    This page has information on Under Ground Shelters, Above Ground Ankored/Earth Bermed Shelters, Inside Retro Fit Shelters, Climate Change Protection Complexes, Executive Retreats ( Safe Areas), Under Ground or Above Ground Secure Data Storage Facilities, Hardened Shelters, Hardened Structures, Back up Command Centers, Emergency Operations Centers, fuel, water, & liquid storage tanks above and below ground. Safe Rooms, Bunkers, Portable Safe Rooms, Smart Rooms, for personal, family, group, government or military supply or personel protection. Custom units are available.
    Click here for quick links to the following on this page.
    1. Climate Change Protection Complexes
    2. Above Ground Ankored Shelters
    3. Under Ground shelters
    4. Air Filters
    5. Liquid Storage Tanks

    Please call us at 1-360-458-6778 to order or if you are looking for something you do not see here. We are adding new models. Please sign up for our free News-Alert for the latest news. See e-mail News Letter on the index to the left.
    Under Ground Shelters

    What does the Ground Hog and
    Ant know that we should know?


    Many people ask us how could one survive a major disaster, whether natural or man made or a combination thereof. One way nature protects its critters is getting them under ground. Ground hogs and ants are good examples. They have been around for a long time. So has nature.
    A properly built and installed under ground shelter is an excellent way to improve your chances for long term survival. The Survival Center has been building and installing under ground shelters since the late 1970’s. Over the years we have refined what really works well and not so well.
    We build our shelters with the utmost of care and with your long term multi-hazard protection in mind no matter what scenario one would be preparing for. Our Under ground shelters are designed to protect from earthquake, nuclear, biological or chemical events, tornadoes, hurricanes, fires, etc., and as a home safe area. Great Idea for VIP or Executive Protection - retreat, Secure Data Storage, Backup Command Post, Remote Protective Location, and more. Our heavy duty steel reinforced under ground shelters are air tight and water tight. Your particular situation may require additional equipment.
    Remember the three most important things in real estate? Location, Location, Location! This also applies to properly installing your shelter. The best location is in a slope or gradual incline of a hill so one can be high, dry and achieve natural air flow. Avoid putting your shelter below the water line or in an area that may flood. If you live near the coast line of any body of water you may want to consider moving your shelter inland to a safer area. Shelters can arrive fully stocked with food, water, supplies and most anything else one would want inside.
    The Basic Under ground Shelter ( Order Code # UG1) is an internally and externally reinforced ( reminds one of a submarine ) 8 ft diameter by 27 ft long ¼ inch thick steel tank. Includes: Lockable Air valves, entrance with ladder, emergency exit, emergency hatch opening 20 ton jack system, storage shelves, paint inside and out, metal protective anodes ( to prevent rust ), wood floor down the middle approx. 6 inches high. One low volume Flush Toilet, Shower, Double Stainless Steel Kitchen Sink, Food preparation area, 4 bunks + hangers to hook up additional hammocks, etc., and lots of storage. Lifting hooks for easy installation.
    All shelters are air tight and water tight. These are tried and proven shelters tested over time. Starting at $59,995.00 plus delivery and installation.
    Air filtration, septic tank and hook up are optional. Why heavy duty steel? It works the best.
    These shelters are designed for long term family survival and will handle a family of 4/5 long term or more people for a shorter time period. More deluxe units are available. Several units can be clustered together ( see drawing below ) for additional comfort and storage. Optional Utility Modules are available, that could include but not limited to: generator, fuel storage, water storage, washer and dryer, additional storage, water heaters, batteries, invertor, etc. Concrete reinforcing is a suggested option to make your unit a more hardened shelter or hardened structure.
    To Order This Basic Under Ground Shelter On Line Click Here Features of our Shelter System

    Quick and Easy Installation ( hours instead of months - more secure & less exposure) Easily transported to your location - we can ship to all 48 statesHeavy Duty Reinforced welded steel construction - looks like a mini submarineWater and Air TightOptions for attached additional Storage or Utility unitsProtection from Nuclear, Biological & Chemical attack, Incoming space debris, etc.Optional concrete reinforcement, extra storage, air filtration, fuel, etc. Can connect units together for additional spaceProven and Tested over timeBright & roomy inside with lot of head roomGreat protection against high winds, earthquakes, tornadoes, fire, vandals, etc.Easily camouflagedKitchen, Toilet, Shower, Bunks, Storage space included.So, the Ground Hog ( and Ants ) are protected by going Under Ground. How about You ?

    General consensus today is that if one was to put themself in the best situation to be able to survive the POTENTIAL Planet X effects, climate changes, earth changes, earthquakes, asteroids, comets, war and the effects that may be coming our way, and stand up to the potential high surface winds, high water, and nuclear explosions ( nuclear type winter, etc.) (from whatever source, be it man made or from crashing asteroids) then one would be wise to observe nature, like the Ground Hog ( ants included ) and Get Under Ground!
    A properly designed, build and installed under ground shelter may give you the edge you need to survive. This page is presented as a brief synopsis of what we have learned over the past 30 years of building and installing various under ground shelters. It is better to be one year too early that one day to late!
    Perhaps this is a view to the future !



    Under Ground Shelters Ideas

    Add on Units are Available See Below





    Climate Change Protection Complex

    Designed for a family of 4-5
    This complex is designed with long term survival in mind. Includes most everything you will need to survive for up to 10 years*( our choice - except personal items, medications, etc. ) with the main focus on the first 4 basics of survival: 1. Food 2. Water 3. Medical 4. Shelter as indicated in the book “Basic Preparedness”.
    Includes: 5 Under Ground Shelters 8’ diameter x 27’ long connected together. This 5 Shelter Under Ground Complex provides living space for up to 5 people long term or more short term. This includes transportation in the connected 48 states. Does not include installation. Site must be approved by the Survival Center engineering staff in consultation with local certified civil engineers. Potential Land ( site ) Options available in the Pacific Northwest.



    • 5 Shelter Complex Inner Connecting Two Together Utility Module
    • Connected, Flexible and
    • easy to access.

    This is a Partial List and description of the items included. More detailed information is available once customer is approved and deposits made.
    1. The Main Shelter is the living area with sleeping, cooking, shower and toilet facilities.
    2. Food. The Food Shelter is where most of the long term storage food is located. Some food preparation can be done here. This includes 10 years food supply (our choice) for 5 people. Grain mill for grinding grain, stainless steel cook ware, alcohol cook stove & fuel, utensils, flatware and kitchen basics.
    3. Water. The Water Shelter is where most of the water, water purification, pumps, etc., is located. This supply will need to be replenished at regular intervals via a well, etc.
    4. Medical. The Medical Shelter is the built in medical facility with extensive medical supplies including but not limited to be able to do minor surgery and long term care and special needs for the occupants. This area also doubles as the entertainment, play, recreation, sprouting, time out, etc., area when not in use as a medical facility. Can also be a back up sleeping area.
    5. Utility. The Utility Shelter is the generator room with storage for fuel and extra supplies to repair and maintain the under ground facility. Also included a clothes washer, dryer, extra shower, inside gardening ( hydroponics, sprouting, etc. ) Communication center - short wave radio, satellite hook up, satellite phone, etc. Non-Hybrid Garden seeds and tools.
    All units are connected to fresh air with NBC type filtering system operated by electric power with hand option included. Internal Battery bank is hooked up to gas/diesel generating system with stand alone solar electric generating backup system.
    What all can I have? One of the questions most asked in regards to Under Ground Shelters is can I have this or can I have that?
    Keep In Mind
    You are only limited by your imagination and your ability to pay for it.

    Price: Starting at $ 1,570,000.00 + installation for the Climate Change Protection Complex.

    Design: We can design and manufacture for most any hazard you are planning for. Generally our units are NBC ( Nuclear, Biological, Chemical ) ready. Some customers require less, some require more protection. Initial consultations will determine the direction for your complex.
    Reinforcing: All our shelters are reinforced for added strength, however, remain flexible for potential earth movement. Earth arching and correct installation assure maximum protection and longevity. Concrete options are suggested for additional protection. The interior reinforcement reminds one of a mini submarine. Heavy Duty and Built to last.
    Installation: Is not included in the price. We will work with your local contractor, certified civil engineer, licensed electrical contractor and other who may be needed to properly install your system. These contractors know your soil conditions and can give valuable advise. Many things must be considered before construction begins and pre-planning is a must.
    Delivery & Supplies: Most of the modules will arrive ready to go with supplies for each stored inside. Additional supplies, storage tanks for water, fuel, etc., can be shipped at the same time.
    Additional Information & Details:
    This is a very brief overview of what this Climate Change Protection Complex is all about. Please give us a call to discuss the details of your complex. Many potential scenarios could develop, and Pre-planning and Commitment to your survival will determine your future. It is about the future - yours and how you prepare for it.
    Call 1-360-458-6778 m-f 10-6 pt* Longer scenarios are available.

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  10. [60]
    علي محمود فراج
    علي محمود فراج غير متواجد حالياً
    عضو تحرير المجلة
    الصورة الرمزية علي محمود فراج


    تاريخ التسجيل: Sep 2007
    المشاركات: 2,897

    وسام الشكر

     وسام كبار الشخصيات

    Thumbs Up
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    Under Ground Shelter Add on Units ( Modules )

    Under Ground Shelter Add on Units ( Modules )

    Can be connected to your main unit

    Add-on units ( Order Code # UG-AU) extend your stay and provide additional needed services which could include but are not limited to: extra storage, generator room, fuel storage, water storage, washer, dryer, refrigerator, extra kitchen, extra shower - wash room, tool room, equipment storage, work shop, sprouting seed area, garden area, cool room, communication room, entertainment room, etc. etc. Many units can be clustered together.
    What all can I have? One of the questions most asked in regards to Under Ground Shelters is can I have this or can I have that?
    Remember - You are only limited by your imagination and your ability to pay for it.




    Above Ground Anchored Shelters - New Models

    Anchored in Your Back Yard

    Discrete Above Ground Anchored Shelter Designed for
    Short Term Use & Close to Home!


    Outdoor Above Ground Anchored Shelter
    surrounded by a Garden Type Shed.


    Now You See It

    Now You Don't

    Above Ground Anchored Shelter 6’ X 6’ Round
    ( other sizes available )
    Easily seat 6 adults. Storage under seats.
    Large Entrance for easy access.
    Locks from the outside when not in use.
    Lockable from the inside when in use.



    Mil Spec ground anchors hold shelter securely in the ground. Special Heavy Duty Four Corner Ground Anchor attachment locations.




    Shelter can be bolted into concret with pre-drilled hole already
    in the legs.



    Locks: Double dead-bolt locks. Locks and keeps shelter secure when not in use. Can be locked or unlocked from the outside with a key when not in use. Lockable from the inside when in use and can easily be unlocked from the inside by most children over 4. ( we did a test )

    Easily accessible, inconspicuous ( looks like a garden tool shed ) ready to use at a moments notice. Protection from high winds, tornadoes, hurricanes, flying debris, earthquakes and more.
    With the doors closed no one will know your Above Ground Anchored Shelter/Safe Room is ready and available.
    The Above Ground Anchored Shelter is easily disguised inside this inconspicuous simple garden shed. A basic garden shed comes standard with The Above Ground Anchored Shelter. Several optional garden shed designs are available. ( yes, we realize that in high winds the shed will probably blow away. Small price to pay for your safety and protection. It is easy for you to replace )
    Features:
    1/4'' Heavy Duty Reinforced Round Steel Shelter ( heavier is available )
    4 Heavy duty ground anchors ( mil. spec.) = (military Specifications )
    Entrance Door 2’x5’
    Lockable entry door.
    Additional Steel Bar Door Latch ( Inside for added security )
    Seats 6 adults ( depending on size )
    Storage under Seat
    Reinforced structural interior
    Upper and Lower air vents
    Bright interior. Paint inside and out.
    Storage bins are located below the 6 person seats and can be used for storage of emergency and survival supplies.
    Special industrial heavy duty door, door hinges with interior lock down bar for added safety.
    Reinforced steel vents allow natural air ventilation. Optional air filters and blowers are available.
    The Above Ground Outdoor Shelter is anchored into the ground with steel anchors at four locations ( mil. spec. ).
    Capacity - 6 people seated facing each other 3 per side.
    Designed and built to withstand most high winds, flying debris, minor earth quakes, if properly INSTALLED AND ANCHORED according to specifications.
    Options: Not included in base cost.
    Optional - Spray on insulation for the exterior surfaces
    Optional - Hardened steel and /or thicker steel
    Optional - Garden Shed design of your choice
    Optional - Inside Insulation
    Optional - Lighting package
    Optional - Bullet Resident material
    Optional - Overhead storage
    Optional - Emergency Kits/Accessories can come installed with unit
    Optional - Other Sizes are available. Call or e-mail us
    Order # AGS01 $9995.00 + s&h
    All prices are plus delivery, assembly, and installation. Some assembly is required for the garden shed.
    To Order Please call 1-360-458-6778 m-f 10-6 pt.


    Shipped via common carrier or air freighted at your request.
    The Heavy Duty Specially Designed Ground Anchors, properly installed will hold the Above Ground Anchored Shelter in place in winds up to 200 MPH. Made to Mil-Spec = (military Specifications ) these heavy duty anchors will do the job.
    We will need to know the type of soil you have for correct sizing of the ground anchors. This unit IS NOT designed to be installed where there is danger of flooding. It is NOT water proof. The internal reinforcing will protect from MOST blowing and falling hazards ( not big trees, etc. ) . Site location ( away from falling hazards, etc. ) is very important. Back Yard, Garage, etc. We expect the garden shed ( surrounding the Above Ground Anchored Shelter ) to be destroyed or damaged in the event of high winds, flying debris, etc. Replacement is the responsibility of the shelter owner not the manufacturer or distributor.
    The shelter systems we present here, properly installed, is what we believe will help protect us. Location of any of our shelters is vital and great care and consideration to its location is a must for maximum safety. Whether it will do the same for you is your decision. In normal times, 4-6 weeks lead time is required. Shelters are currently only available in the connected 48 states and can be shipped via common carrier. We will work with your local contractor for installation. Prior to purchase, consultation is available and billed at an hourly rate. One hour minimum. Due to the potential nature of events, No guarantees or warranties are expressed or implied. ALL OF OUR SHELTERS MUST BE INSTALLED ACCORDING TO SPECIFICATIONS TO RECEIVE MAXIMUM BENEFITS.
    Shelter Options

    Air Filtration System


    True NBC filtration ventilation system

    A shelter is only as good as its air filtration system. This Air Filter System is a Nuclear, Biological, and Chemical (NBC) air filter that will enable you to create either a positive pressure safe room, fallout shelter, bomb shelter or a negative pressure isolation room. It will operate on regular 110v line power or will automatically switch to battery backup. An optional ( shown ) hand powered manual bellows can be ordered for use in a long term electrical outage. It will handle up to 12 Adults. Output is 100 cubic meters per hour.

    This Air Filter System can be mounted in a residential safe room with both backup systems in place: a user supplied battery for short term power outages & the optional hand operated bellows for longer power outages - note the 36 inch yardstick to the right for size reference. The air is drawn through the flex hose, into the bottom end bell, then through the filter bank in the middle and out the top end bell to overpressure the shelter or safe room.
    How does it work?The filtration unit draws in unfiltered air from outside your shelter or safe room through an intake vent that can be located in a wall, window, or door. The air passes through a bank of up to 6 filters certified for the collection of nuclear, biological, and chemical (NBC or CBRN) toxins or natural contaminants and allergens such as dust or pollen at 99.97% efficient down to 0.3 microns. The NBC filtration system is comprised of five separate filter media's: (1) a gross filter, (2) a pre-filter, (3) a HEPA particulate filter, (4) a gas adsorption cell, and (5) a final carbon fines filter. Filters are easily changed. Spares are available.
    Then, the safe, breathable air is blown into your protected space with just the right force to produce a slight overpressure in the room. This overpressure keeps toxins from migrating into your safe room or shelter from any other entry source. This is the same technology used by the US military to keep soldiers alive in a CBRN environment.
    The Air Filter System can set on the floor or mounted vertically on a wall. You can order many optional accessories such as a hand-operated bellows backup, a blast valve, and a warfare gas absorber which is filled with military grade activated carbon that adsorbs gases. What really sets this air filtration unit apart from other NBC air filtration systems are the redundant backup systems.
    Order # 42200 $2495.00 + s&h ( add # 42220 for hand operation ) Typical air filtration schematic of a normal installation





    1. Optional through the wall kit
    2. Wall mount flange for hose - included with the air filter
    3. Intake hose: 5-inch diameter/60-inches length - included with the air filter
    4. NBC filtration/ventilation unit
    5. Optional emergency hand pump shown mounted on the air filter
    6. Optional digital pressure monitor
    7. Optional overpressure valve - ceiling mount also available
    8. 10/220 Volt AC outlet (standard wall plug) for the air filter
    9. User supplied 12-volt deep cycle (marine) battery - standard automotive batteries will work as well


    Emergency Hand Pump This hand operated bellows slip-fits instantly into the top of the air filter and is operated by pumping it up and down. It is used to draw filtered air into a protected space during a long term power outage.
    A typical shelter occupant cannot physically maintain an overpressure with this device (truth in advertising), but you can draw in air through the filter bank and into your shelter, displacing the carbon dioxide that is exhaled by the occupants ~and~ you still have safe, breathable air being filtered for NBC toxins.
    The constraint for maintaining an overpressure in any decent sized shelter (larger than a coat closet) is human endurance - there is simply too much air to move, either by a plunger system (which we have), or a rotary crank system, to maintain an overpressure for more than a few minutes. Either way, the oxygen that you consume and the carbon dioxide that you exhale while you bring in filtered air by hand power is beyond what humans can accomplish.
    Our emergency backup bellows has an output of 50 cubic meters (1766 cubic feet) per hour at 50 strokes per minute using a 7 inch stroke and an output of 100 cubic meters (3200 cubic feet) per hour at 50 strokes per minute using a 14 inch stroke.
    Order # 42220 $299.95 +s&h

    Overpressure Relief Valve
    Ultra-low pressure purge valve


    This overpressure relief valve is critical to creating an overpressure in the protected space by adding the proper, metered resistance to the outgoing airflow. The valve is normally closed and will not open unless the air pressure inside the shelter is slightly greater than the outside air pressure.
    This gives you true ventilation - air in through the air filter and out through this valve preventing the buildup of carbon dioxide exhaled by the occupants. Carbon dioxide poisoning will incapacitate and kill the occupants of an enclosed space without ventilation long before oxygen deprivation.
    Please specify at time of ordering whether or not you are mounting this valve directly on the wall or ceiling - or if you are going mount it to the blast valve. We will configure your overpressure relief valve so it either has a mounting flange for the wall or ceiling or a slip-fit connection for the blast valve.
    A good rule of thumb is that if you are underground, you need blast valves and if you are above ground, you do not - unless you have a hardened structure above ground. There is not much need for blast valves unless you have a hardened, blast resistant structure.
    Any protected space will benefit from this valve, especially if it is well sealed, then this overpressure relief valve is a necessity - if you want true ventilation.
    Order # 42230 $145.00 + s&h.

    Blast valve

    This Blast Valve is designed and tested to withstand a 50 PSI blast.
    In order to withstand this incredible pressure, this item is fabricated from 3/8" (.375 inch) steel. It is a heavy, robust item designed to keep the massive pressures of a nearby conventional or nuclear blast from injuring or killing the occupants of your bomb shelter. The bolt pattern meets the Israeli standard for blast valves.
    This Automatic Double Acting Blast Valve automatically closes when the initial positive pressure wave from an explosion hits and automatically closes a second time (in the other direction) when the outside air pressure goes negative in relationship to the internal shelter pressure. When the outside air pressure returns to normal, the blast valve automatically returns to its normally open state. In other words, it lets air flow into your air filter or out of your exhaust port for normal operation, but will not allow a blast of high-pressure air to enter your shelter - and bring contaminants with it.
    These valves are only necessary in hardened bomb shelters and should be used in pairs - one on the air intake pipe and one on the air outflow pipe.
    Order # 42225 $395.00 + s&h.



    Replacement filters

    These replacement filters are of the highest quality. They are all easily replaced by using simple hand tools (two Crescent wrenches) and a suitable receptacle such as a plastic bag to place to old filter in. For more information about how to replace the filters, please see the Air Filter manual.
    All three of these filters come with the Air Filtration System:
    Pre-filters







    The TWO pre-filters are designed to extend the life of the HEPA filter by trapping both large and small particles. The first filter is the roughing filter with an average efficiency of 25 to 30 percent when tested in accordance with ASHRAE 52.1. The roughing filter extends the life of the intermediate filter or pre-filter and reduces its change frequency. The second filter is the intermediate filter with an average efficiency of 80 to 85 percent when tested in accordance with ASHRAE 52.1.
    Order # 42228 Pre-filter #1 $45.00 + s&h.
    Order # 42229 Pre-filter #2 $275.00 + s&h
    The HEPA filter


    The nuclear grade HEPA filter is a special filter we have made just for our application.Each HEPA filter is individually tested to MIL-STD-282 before it leaves the factory, your assurance that it meets rated efficiency. The penetration and actual airflow rate are indicated on the label. Each filter is also assigned an individual serial number.
    Every HEPA filter is individually DOP tested: This has been the industry standard test method for many years. It is conducted using a forward light scattering photometer. The HEPA is challenged with 0.3 micrometer particles of dioctyl-phthalate (DOP). By measuring the upstream and downstream concentration of these particles, the HEPA filter cell efficiency can be calculated.
    Underwriters Laboratories Classification UL 586: This classification to insure that each HEPA filter cell is individually tested at the factory. Additionally, representative HEPA filter cells are tested by UL to ensure that they provide their rated HEPA level filtration, after being subjected to the following conditions of a high moisture environment of (90% R.H.), a high temperature environment of (371 deg/C), low temperature environment of (-3 deg/C). UL also subjects the HEPA filter cell to a spot flame test of (954 deg/C).
    Media: Water repellant glass micro fiber 99.97% True HEPA cell type (A)
    Cell Side Material: Fire retardant particle board
    Separators: Aluminum
    Bond: Polyurethane foam
    Gasket Material: Neoprene (RE43E1)
    Gasket Location: Both sides
    Factory Test: Certified 99.97% (DOP)
    UL 866 Label: Required:
    Order # 42210 for filter # 3 HEPA filter $375.00 + s&h.
    Total for all three filters is $695.00 + s&h.
    Order Toll Free in the USA & Canada
    1-800-321-2900




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