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Partial Underground Storm Shelter
Rest easy, we are an NSSA Producer member. Accept no substitutes; ask for shelters from an NSSA Producer Member. There is a difference.

Door Tested by the Wind Science & Engineering Research Center at Texas Tech University

All partial underground storm shelters are steel reinforced with rebar poured with a 5,000 psi (28-day) compressive strength concrete mix. Each storm shelter has an 8" turbine vent and a 6" inlet.  Our storm shelters feature a handrail design with steps and metal door with two locking mechanisms.  The top and bottom sections are tied together with four 2' x 12" x 3/8" steel straps and 5/8" diameter grade 8 bolts.

Yes! A storm shelter meets and is certified for the NSSA/ICC 500 standards.

Yes! A storm shelter door passed the 100 MPH 15 pound 2" x 4" missile impact test at Texas Tech University.
Shelter Door Test Video
Call (865) 270-8080, email, or come by our office and look over the storm shelter first hand before making a purchasing decision.
How many people is this shelter recommended for?

Capacity for 1 and 2 family dwellings (occupant density)
  • Approximately 11 people (if all floor space is empty)
  • The NSSA Standard for tornado shelters requires 3 square feet of usable floor area / occupant in 1 and 2 family dwellings

Capacity for other residential dwellings (occupant density)
  • Floor area/occupant in 1 and 2 family dwellings
  • Capacity for other residential dwellings (occupant density)
  • Approximately 8 people (if all floor space is empty).
  • The NSSA standard for tornado shelters requires 5 square feet of usable floor area/occupant in other residential dwellings.

What are the physical dimensions of this shelter?
  • Approximate inside dimensions: 5' Wide x 10' Long x 6' Tall
  • Approximate outside dimensions: 5'-6" Wide x 10'-6" Long x 6'-8" Tall

How much does this shelter weigh?
  • Complete shelter weighs approximately 16,000 lbs.; Door and door frame weighs approximately 100 lbs.

Does this shelter need a concrete pad/slab?
  • No, this shelter successfully met the requirements of the NSSA standard without anchoring.

What do you need to know when determining where to put your partial underground shelter?
  • Our semi-type boom truck is approximately 14 feet tall; clearance to your shelter location will be required.
  • You need to find out if a building permit is required to install your above ground storm shelter. If so, you are responsible for obtaining the correct permit.
  • Most municipalities require shelters to be 3 feet from property lines; verify your distance required.
  • Do not place shelters over underground utility lines or underneath hanging utility lines.
  • Do not place shelters in areas that may be subjected to flooding.
  • Put in a location that will be quickly and easily accessible.
  • C.R. Barger & Sons, Inc. does not offer the excavated hole.

How should the shelter hole be excavated?
  • A 46” deep by 78” wide by 138” long hole which allows for a six-inch gravel foundation (required for shelter installation).
  • The entire bottom half of the shelter is buried below finished grade. This process is a minimal impact to your yard and provides ease of access for your family during a storm.

Why should you purchase a precast concrete partial underground storm shelter from us?
  • Our shelter designs were evaluated by an independent, third party engineer for conformance to the NSSA standard.
  • Peace of mind in knowing that your shelter is manufactured using high strength materials.
  • Shelter is designed for wind speeds of 250 MPH which are greater than that of an Enhanced F-5 tornado.
  • Precast concrete shelters have low electrical conductivity and noise resonance.
  • Most cellular services are not significantly affected when inside a precast concrete shelter.

Where can you find more information?
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Above, a Barger And Sons partial underground storm shelter being installed.
Partial Underground Storm Shelter Instrusion Gaurd
Above, an inside look at intrusion guard under one of the two vents in the top of the storm shelter. The intrusion guard is bolted to the inside ceiling with cast in place bolt anchors in the concrete. This provides protection against debris from entering the shelter through the vents.
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Partial Underground Storm Shelter
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C.R. Barger & Sons, Inc. makes every attempt to ensure any advice or information contained in this website is accurate and correct, no liability of any kind including liability for negligence is accepted in this respect by C.R. Barger & Sons, Inc., its servants or agents.