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Old 09-13-2010, 06:04 AM   #21
hank2222
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first off is containers are a bad idea to try as a shelter even with a semi arched top over the container top unit along with tring to bury it with dirt and even a semi modications on the top to support it ..it better go with a product like monilithic domes or raduis defense or utah shelter companys to be building underground system or a more squared building like the american bomb shelter company

second off drainage has to be done right the first time and not trying to redone at a later date..

third .. ..rinoliner is a not a good product in my book.i done a lot of research on the line -x- product line and found it in my own personal opinion it a better product than rinoliner



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Old 09-13-2010, 06:34 AM   #22
questor
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Pre-Cast Concrete Box Culverts for Grain Reclaim, Cattle Pass and More


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Old 10-30-2010, 08:55 AM   #23
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We use shipping containers for bunker systems all the time. The key is to flip the container over. The roofs are not designed to support weight except at the corners. The floors however support tons and tons. When we flip a container it generally has 3-4 of earth above it to be able to withstand a direct 107mm rocket or 81mm mortars. The insides are reinforced just as a precaution. I have seen a few we have done without the center reinforcement and the ceiling (the floor) looks great.

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Old 11-11-2010, 09:57 AM   #24
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If you look around a bit you may find the cast concrete blocks that act as forms. Very similar to the foam blocks. That would be stonger and still allow for DIY. The foam concrete form blocks would be stong enough once filled also, I just wonder about the water proofing if the foam surface.

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Old 11-11-2010, 01:11 PM   #25
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I got some bad news for the OP. If you dig down in HR, VA, you're gonna have a swimming pool. It's gonna be near impossible to seal anything up well enough that close to sea level. And if you somehow manage to, it'll actually float up...

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Old 11-21-2010, 02:09 AM   #26
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Yes in this area water is only six feet down. But I am only STATIONED here I retire before long and that's when I will build.

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Old 12-31-2010, 06:19 PM   #27
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You don't want to dig lower than the high water table for your area.

Here are plans for building an underground bunker using cement filled blocks reinforced with rebar. Basically the company offers the plans for free, in hopes you will buy their products to complete it.

Home:
American Bomb Shelter - the best underground steel reinforced concrete bomb shelter kit available

Plans:
http://www.americanbombshelter.com/manuals/ASR-bomb-fallout-shelter-kit.pdf

I would of already built one except I live in FL and when I first moved here I was putting in a fence and hit water with in 2 feet. I've decided I'm just going to do something similar to a berm house. Where it's 2-3 feet underground and then you completely cover the exposed areas, except the entrance with earth.

Something along the lines of the below image, except I plan to use the double doors. I also plan to build something like 2000 sq ft in size. Which is possible, as I already spoke with the company about it and when I'm ready I will get plans specific for it. I just need to find a piece of property to do it, as I currently live in an upscale deed restricted community and there's no way they will approve such.

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Old 02-07-2011, 05:10 AM   #28
Virgil_cain
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Default Pre-Cast Culvert Bunkers - Questions

Quote:
Originally Posted by questor View Post
Questor,

I agree that a waterproof, concrete, underground shelter is the gold standard for an SHTF dwelling. Really, we're talking about a bunker here and that's exactly what you want.

However, got a question for you on your approach. I can see the value of the pre-cast concrete culverts, but I see a few issues that I wonder how you solved.

1.) A pre-cast culvert is basically a concrete box with two open ends. My question - what did you do about the open ends? Minimally, I'd like to buy a concrete box with at most one open end, that way I could buy two and I could join them at the open ends and end up with a larger closed six sided box. Is this what you did or did you cast the "ends" in place?

2.) To get more square feet I could see the need to join two or more pre-cast culverts. I know they have tongue and grove joints at the ends, but did you do this and if so did you have any problems getting the joints to be waterproof? If so, what did you do?

3.) Did you coat the outside of the culverts with any sort of waterproofing to ensure a dry underground space? I'm thinking I might want to spray on the green elastomeric stuff I see builders spraying on in-ground basements. What do you think of that?

Appreciate any insight you might provide.

Thanks,
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Old 02-07-2011, 06:48 PM   #29
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1
Actually, the company we got these from do supply 'end caps'
and access methods and they seal up quite nicely.
http://www.hansonsilo.com/culverts.php

2
the tongue and groove joints have a built in seal in all the joints
a sort of a tar or rubber substance that you could see ooze out
as the pieces were put together. Before it was all covered, we
poured tar in the seams and covered them with 1 foot wide strips of
plastic across the top and 3/4 of the way, or better, down each side.
our drainage worked fine three years ago when we had some bad rains
in the area. Turns out we DID pick the right spot to build!

3
we just left ours 'Au Natural' and it's been in place for almost
seven years now. No leaks, drips or seepage that we've seen.
and no cracks! The manufacturer gave us a 50 year warranty
against leakage. We also have 4 monolithic domes
(with two more going in) incorporated into it.


we're deep enough that the temp stays a workable 54 degrees.

we are also, now, experimenting with below grade 'Earth Bag' construction


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Old 02-16-2011, 01:18 AM   #30
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Thanks for the info Questor. This seems like a very efficient method to build an underground shelter of some significant size.

Did you do any special site preparation, like putting down gravel, any special backfill, french drains, etc?

If you don't mind me asking, how deep below grade did you go?

Thanks,




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