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Bubbatheredneck
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Posted: 5/26/2012 2:08:03 AM

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My dad is putting in a detached garage and concrete guy says he can put in a 10X12 or so mini basement in one corner. Weight is not too much of an issue because a workshop area will be above it and no cars will be parked over it.

Ideas or suggestions for him?

What kind of entrance cover? Roof hatch?

My dad is thinking of an angled ladder instead of stairs (kinda like on a ship)

I advised him to put in one of those egress windows and wells. It would be hidden behind the garage, but that also bumps the price up a bit and not sure the concrete guy could do it. Is that a big deal?

What is the best way to pour the roof if he changes his plans and does want to park over it?


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Grouchy Old Fart
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Posted: 5/26/2012 8:30:59 AM
12" of concrete with rebar on a minimum of 8" to 12" spacing.

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ilbob
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Posted: 5/26/2012 9:37:30 AM
I would suggest a few things.

Tornado shelters are about not getting killed when the tornado destroys your house or other structure. If the shelter is in or under a structure, there is a good chance you won't be getting out after a tornado without some help if the structure is destroyed. An exit that opens inward and/or is some distance from any structures might make unaided egress a lot easier after a disasterous encounter with a tornado. Even if your shelter is not real close to other structures, the tornado might drop debris on your means of egress.

The concrete guy is probably in a better position to design the concrete work than a bunch of random guys on the Internet. There is no rocket science involved in pouring what amounts to a small basement.

Put in a sump, even if there is no ground water at present.

You won't get a lot of warning in the event of an actual tornado. Make sure you can get to your shelter quickly.
Rat_Patrol
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Posted: 5/26/2012 10:13:59 AM
Originally Posted By ilbob:
I would suggest a few things.

Tornado shelters are about not getting killed when the tornado destroys your house or other structure. If the shelter is in or under a structure, there is a good chance you won't be getting out after a tornado without some help if the structure is destroyed. An exit that opens inward and/or is some distance from any structures might make unaided egress a lot easier after a disasterous encounter with a tornado. Even if your shelter is not real close to other structures, the tornado might drop debris on your means of egress.

The concrete guy is probably in a better position to design the concrete work than a bunch of random guys on the Internet. There is no rocket science involved in pouring what amounts to a small basement.

Put in a sump, even if there is no ground water at present.

You won't get a lot of warning in the event of an actual tornado. Make sure you can get to your shelter quickly.


+1

My addition: make sure there is enough food/water/sanitation (pail and garbage bags) if case he DOES get trapped. The Gov't recommends 3 days able to stay there. I may not be a sheeple, but that makes good sense. Also, keep a GMRS/FRS or whistle or air-horn-in-a-can down there to signal to rescuers. They may have trouble finding him otherwise.
The door/hatch opening to the inside of the shelter is key. Even if he can't get out because of debris, he should be able to open it to get fresh air.
Bubbatheredneck
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Posted: 5/26/2012 12:24:19 PM
Any links to shelter doors or hatches that open inward?

Rat_Patrol
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Posted: 5/26/2012 12:58:37 PM
May need to build a hatch, or have a local metal fab guy do it.