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Old 02-19-2013, 01:20 PM   #1
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Default Storm shelter/bunker

I have been wanting to build a shelter/bunker for quite some time now, and can't decide what is the best least expensive route. My main ideas is to use a steel shipping container and bury it, but have heard I might have to reinforce the side walls because they are only made to withstand vertical pressure. Does anyone have any pointers or a better idea?

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Old 02-19-2013, 01:32 PM   #2
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Good ole cement blocks (or pored concrete walls) are still the best. Long lasting and least expensive. Build in any shape or size.

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Old 02-19-2013, 02:10 PM   #3
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Is pouring concrete cheaper than purchasing a container

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Old 02-19-2013, 03:04 PM   #4
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Interesting links below regarding shelters/bunkers. You might find an idea or two:

http://www.atlassurvivalshelters.com/

http://www.deepearthbunker.com/survival-pods.html

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Old 02-19-2013, 08:51 PM   #5
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Quote:
Originally Posted by Gm49007 View Post
Is pouring concrete cheaper than purchasing a container
You have to go to your local concrete plant. They have many rectangle shaped concrete sections for culverts, etc. Maybe a couple of them would work for you. Look local. Or they can estimate costs for poured walls also.
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Old 02-19-2013, 09:15 PM   #6
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I heard there is a vacant bunker in Midland City. Maybe it's for sale.....



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Old 02-19-2013, 11:14 PM   #7
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Quote:
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I heard there is a vacant bunker in Midland City. Maybe it's for sale.....
Bahahah!!!I just laughed out loud!
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Old 02-21-2013, 02:32 AM   #8
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Is pouring concrete cheaper than purchasing a container
Depends on the PSI of the concrete. For it to withstand anything significant you'll want at least 4,000 PSI. Also depends if your going to reinforce it with rebar. Might wanna take some measurements of what you wanna do and call around to get prices on both containers and concrete
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Old 02-23-2013, 11:40 PM   #9
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Depends on the PSI of the concrete. For it to withstand anything significant you'll want at least 4,000 PSI. Also depends if your going to reinforce it with rebar. Might wanna take some measurements of what you wanna do and call around to get prices on both containers and concrete
(Gunite ), Portand cement and sand mixed at nozzle with water.!
Supposed to be up to 50 times tuffer than standard concrete


No gravel..!
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Old 02-24-2013, 12:36 AM   #10
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Unless you have had experience in designing and building things from concrete- don't. No, really- don't.

First, if this is below grade, you will need a means of controlling ground water drainage- and a LOT of dirt to move (3x3x3 of soil is about 3000 lbs). You will need to keep your excavation from collapsing while working inside it (sloping or benching the earthen sides)

Concrete comes in different strength mixes- the 3000 lb concrete that works good for sidewalks will not cut it. You will need steel rebar for reinforcement. Design will need to support weight of concrete + weight of soil over it. Forms must be substantial and supported, or you WILL blow out a form. Concrete is HEAVY- and wet concrete is caustic- will eat the skin off you.

There ARE prefab concrete and/or metal structures. If you can lay block you may be able to build your own structure, but again, you will need a design (and possibly building plans)


PS- Gunite maxes at around 4,000 PSI compressive strength- usually a lot lower. Concrete can run up to 10,000, and work with some specialty stuff even higher, but $$$

Oh- burying a shipping container- walls of container have no support against a load applied at a right angle to the sides. Walls will bow in under pressure, and then fail. Walls would need design to resist that load.

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