bagabones73

how many feet of earth to cover my basement in order to completely block heat/IR detection from the sides?

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OLD CHINESE PROVERB SAY - "MAN WHO GO TO SLEEP WITH ITCHY BUMB WAKE UP WITH STINKY FINGER"

parad0x

No idea, but it will help someone who does know just how much light you have, and perhaps the temperatures of the room, as well as your ambient temperatures (outside).
Hopefully someone else can actually help out
d0x

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There is smoke in my iris, but I painted a sunny day on the insides of my eyelids... -Aesop

JustaGrower

Light leaks are your biggest problem. Unless you have this HUGE grow op, you don't have anything to worry about. Seal up the basement windows, unless you are using them for ventilation and that should be fine. Think about what the typical basement wall is made up of. Concrete blocks or poured concrete. Plus its probably partially buried already so I doubt that there would be any kind of a heat signature.
Now think about whats typically in a basement. The furnace. Maybe a water heater. A washer and DRYER. All these things are perfectly normal items that put out a lot of heat. Law enforcement has to take these things into consideration.
Remember that the idea is to hide in plain sight. Do not make yourself stand out from the rest of the neighborhood. Do any of your neighbors have dirt piled up along side their houses?

EMj

He is asking how many feet, not if he should tape up the windows. I looked into this when I built my basement and never found a solid answer. So I put a foot of concrete in as the roof with steel plates. Then backfilled with 3 ft of soil. I then ran the 2.5 inches of ashphalt driveway over that. I have no idea if it works, but nobody came calling. I gotta think that it would block it from the leo's eye at least. I even wrapped the interior with IR blocking material. I know this sounds like overkill but I have the means to do this kind of work at my fingertips, so why not. It's 25' x 25' with 10' ceilings. Stays nice and cool too!! Hope this helps some, Good Luck!
EMj

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Chance favors the prepared mind. Louis Pasteur

I like to keep a bottle of stimulant handy in case I see a snake, which I also keep handy. ~W.C. Fields

parad0x

He is asking how to protect himself from being detected. Taping the windows is part of that process.

d0x

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There is smoke in my iris, but I painted a sunny day on the insides of my eyelids... -Aesop

bagabones73

i didnt say i had any windows

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OLD CHINESE PROVERB SAY - "MAN WHO GO TO SLEEP WITH ITCHY BUMB WAKE UP WITH STINKY FINGER"

bagabones73

from what i have read - leo is allowed to run IR from public property

i realize the rule is dont worry unless your over 2000 watts

but i also have the means and i can afford it for piece of mind

variety of basement style homes in mu area not worried about standing out

as far as tamps and size i have descided not to reveal that any longer for security purposes

for the sake of this conversation lets say how much earth would it take regardless

my guess was 4ft but who knows?

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OLD CHINESE PROVERB SAY - "MAN WHO GO TO SLEEP WITH ITCHY BUMB WAKE UP WITH STINKY FINGER"

EMj

I know he didn't say anything about windows...that's my point. If you don't have a modified basement please do not interject. We are not taking about a typical basement but a underground room...get it? Thanks.
As far as 4 feet I think that should be good. I went with 3 feet because I wanted the high ceilings and I knew I was gonna put the foot of concrete(bridge mix too heheh) on top. I think that 48" is good because the frost won't even get that far so I don't think with 5-10,000w you will generate enough heat to be seen. The thing I worry about is the vents showing up as heat flowing. I have fixed this problem but can't say because it's pretty killer and I have said enough about my space. If the frost can't get there, I don't think that heat can get there. Then again I do not know what piece of equipment leo is using. Good Luck!
EMj

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Cotyledon (kät′ə lēd′'n)

Chance favors the prepared mind. Louis Pasteur

I like to keep a bottle of stimulant handy in case I see a snake, which I also keep handy. ~W.C. Fields

bagabones73

dude you gotta spill on the venting
i have been spinning in my head about vent. and the heat sig.

i have been trying to engineer in my head how to get rid of it

was thinking of either running pipe 20ft and at the end of the pipe cut a hole in both sides of a larger plastic cooler (inlet and outlet) to run vent in and out of the cooler

then run water line with float to keep water levels constent

then set a pump with water spaying during vent

but this all seems extreme - is there an easier way

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OLD CHINESE PROVERB SAY - "MAN WHO GO TO SLEEP WITH ITCHY BUMB WAKE UP WITH STINKY FINGER"

GreenDragon2k

just use it to heat the house.... like a furnace

Or use a watercooled AC system and a 100% sealed room. Then you can dump all your heat down the drain.

You dont need an underground room to block IR... I'd be afraid that 4 feet of earth is not enough to prevent having a glowing driveway.

You can build a room within a room out of foam panels, elevate it off the concrete on wood so it wont heat up the concrete... Then blow cold air in the gaps around the room..

The trick is insulation, not burying it... remember concrete and earth conduct heat fairly well.... Air on the other hand, is a fairly good insulator...

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