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Old 06-05-2012, 06:02 PM
WaterBoy WaterBoy is offline
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Default Basement-shelter,(with concrete roof) Plans?



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I am going to pour a new basement soon, and was wondering if there are any plans out there for a concrete roof. Maybe someone here has done the same?

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Old 06-05-2012, 06:11 PM
HTNFSH HTNFSH is offline
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Interesting topic. I am considering blocking off a portion of my basement (all unfinished) for a storage room instead buying a safe.
Old 06-06-2012, 12:39 AM
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That's the sort of thing you'd see in commercial buildings.

You might be interested in FEMA 320 - Taking Shelter From the Storm: Building a Safe Room For Your Home or Small Business,
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Old 06-06-2012, 01:32 PM
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Quote:
Originally Posted by TMcArthur View Post
That's the sort of thing you'd see in commercial buildings.

You might be interested in FEMA 320 - Taking Shelter From the Storm: Building a Safe Room For Your Home or Small Business,
Thank you! I will check it out.
Old 06-06-2012, 03:27 PM
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When i live in city I carved out an area in basement and reinforce with 18" of commercial reinforced concrete steel plates on ceiling ,toilet, water and steel door reinforced with said steel plates
Old 06-06-2012, 06:04 PM
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http://www.scribd.com/doc/57401159/C...ement-Shelters

This section of a book has some pretty good rough designs for a basement bunker. Might consider ICF blocks if you haven's already poured the basement.
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Old 06-06-2012, 06:43 PM
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Smile Shelter roof and wall thickness

Search this on wikipedia. It shows thicknesses for above primarily for nuke protection, such as reinforced concrete appox 20 to 22 inches thick. It is also known as the halving rule, ie; using concrete each appox 2 inch thickness cuts in half the amount of gamma radiation coming thru. 500 R with a 10 inch concrete roof would be 1/2 of 500 = 250, 1/2 of 250 = 125, appox 67, 33, 16. This was amount divided total of 5x's, leaving 16 Rotagens. Since radiation is cumulative with 50R causing extreme illness or death within 4 days a thicker amount of concrete would be needed or enhanced by lead, earth, water or whatever. In my shelter with a 8 inch floor, I used a combo of + 2.5 inch pavers and cider blocks filled with concrete. Remember this stuff is HEAVY so reinforce accordingly and maybe more!!
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Old 06-06-2012, 09:03 PM
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Quote:
Originally Posted by Mechman View Post
Search this on wikipedia. It shows thicknesses for above primarily for nuke protection, such as reinforced concrete appox 20 to 22 inches thick. It is also known as the halving rule, ie; using concrete each appox 2 inch thickness cuts in half the amount of gamma radiation coming thru. 500 R with a 10 inch concrete roof would be 1/2 of 500 = 250, 1/2 of 250 = 125, appox 67, 33, 16. This was amount divided total of 5x's, leaving 16 Rotagens. Since radiation is cumulative with 50R causing extreme illness or death within 4 days a thicker amount of concrete would be needed or enhanced by lead, earth, water or whatever. In my shelter with a 8 inch floor, I used a combo of + 2.5 inch pavers and cider blocks filled with concrete. Remember this stuff is HEAVY so reinforce accordingly and maybe more!!
If he is going for radiation protection he will need a shower or wash room to protect the bunker from cross contamination, unless he is in the structure before fallout. Am I right?

The basement is the best place to build a bunker because NO ONE KNOWS! He could even hide it with a false wall. We did that in my parent's basement.
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Old 06-06-2012, 10:06 PM
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Thanks, since I was only passing on base info. A person building further would need to follow further shelter plans, also adding ventilation systems ect,
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