Our Viking Shelter is unlike any other structure on the market, it is thee ultimate family friendly underground shelter. Streamline, methodical, and indestructible. With our Helix Steel method as opposed to a classic rebar technique, the right team can erect and fine finish a Viking Shelter within 3 months.
Swipe Right Below
for a light review of our methods
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Gravel and Wooden Forms for Quonset Hut Slab
An 8" layer of 1 inch gravel was dumped and then additional 6" of 1/2" gravel spread (along with drainage pipe)
Preparing a level gravel base for black plastic and 4x4 forms for the 1ft Helix Steel Slab (No Rebar)
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Wooden Forms & Slab to Wall Concrete Cold Joint Seal
2x4’s hold up Rubber Seal around the edge for Waterproof concrete cold joint to prevent any leaks (Half goes into slab, other half into walls)
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![Oranssi carpenter using bench saw]()
Raising of the Quonset Hut Arches
This is typically a 3 man job with scaffolding, a couple ropes.
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4x4 Wood beams inside UG to reinforce structure for Shotcrete
These are reused for building out the interior of the UG
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Spray Foam Application
This gives a proper surface for the concrete to stick to vertical surfaces & assists with waterproofing/moisture build up
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![Oranssi previous project]()
Continued Spray Foam
Foam is sprayed to a thickness of 4 inches in the valley and 2” on the ridges.
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Buckets of Helix Steel being prepared to pour into Concrete mixing trucks
This will go into a shotcrete pump that pushes it into a 4” hose that is connected to a large air compressor that sprays small pieces of steel that has been mixed evenly onto the structure
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The First Quonset Hut, we used two layers of rebar.
Two 1ft x 1ft grid of #6 rebar with 6” on first layer, then another grid of rebar with additional 6” of shotcrete.
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Inside view after 4x4 removed and interior door to the tunnel built
Custom hand made wooden door that opens into the interior of Quonset Hut
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Waterproof inside opening Marine Door
You never want a door that opens to the outside incase debris is pushed against the front of it, if it does open, you need to have a hydraulic ram setup to push it open.
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Applying the Shotcrete with Helix Steel
We decided to hire an outside shotcrete pumping company that traveled 100 miles to spray Helix Steel (no rebar) on this building.
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Front View of First Quonset Hut Built
This is our First Quonset Hut Shelter built with rebar that is featured on our Youtube Channel currently.
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Side Outside view of first Quonset Hut
A lot was learned on this project but even 13 years later, zero leaks or issues have been reported.
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Aerial view of completed Quonset Hut with No Rebar (only Helix Steel)
As you can see, this Quonset Hut Shelter has skylights and a escape hatch (not visible here) on the backend. The air vent pipe is low in the front and high at the end of the building which creates a nature pull to circulate the air.
(Options for complete shut down of air vents available)
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Entrance with sidewall view
As you can see there is an air vent hole in the front, most customers don’t mind if that is visible but there are options to extend and make it go underground to a covert location.
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![Oranssi technician working on a roof project]()
Finished 40ftx32ft Quonset Hut with 20x8ft Tunnel
This is the biggest one to date but it can be much larger.
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Front Entrance with covered wooden patio area
Customer wanted a covered patio area outside the entrance to the Quonset Hut Shelter (slab was poured after photo taken)
Services We Offer
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Blue Prints
Do you want to buy our engineered & approval stamped blue prints?
We have them ready!
Contact us for pricing.
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Off Site Consulting or Contracting
After more than 2 decades of experience, we can assist with coordinating all aspects of constructing a Viking Shelter on your property. Let us know how we can help!
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On Site Contracting
Within the greater Pacific Northwest we are plenty capable of arranging a visit to your building site. However our preferred method is to work closely with a skilled contractor in your area.
Once all materials are on-site, it takes approximately ONE month for the digging/grading, slab pour, Quonset hut erection, shotcrete entire building with Helix Steel, and final backfill.
Depending on your caliber finished product you desire. The inside build out usually takes another month. The sourcing an costing out of big ticket items such as solar panels, generators, wells etc. come separately.
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Cost to Build
There is an extremely wide range of variables when it comes to cost of materials which changes the finished product price, a major one is the size of your Quonset Hut Underground.
Please contact us to discuss further details.
Building Quonset Hut Shelters since 2009~!!
We are a small operation based out of the Pacific Northwest that has built 10 or so Undergrounds in the past 20 years. None of the UG’s that have been built has ever leaked water even with receiving more rain then anywhere else in the USA. We took a break over the years but with how the world is, we figured, why not share this with people who might be interested. These are some of the nicest & strongest Undergrounds we’ve found over the years and nobody else can build them like us due to our experience which has given us more wisdom then money can buy!
We sincerely look forward to assisting you with your project! Free feel to ask us any questions!
Thank you & stay safe, we’ll leave the light on for you!!
Ready to Build Your Vision?
We are here to assist you, whether with ideas, blueprints, coordinating to build a Quonset Hut in your area, or having us with boots on the ground if you are located around the PNW.
If you’d prefer to not use the form, here is our email:
VikingUndergrounds@gmail.com
If you want to talk on the Phone or purchase Blueprints, please visit our shop page.
(You are not required to leave your name or phone number, we value privacy)