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Frost Lines

 
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Hey people, just purchased acreage in New Brunswick, Cocagne area.

Would be helpful to know what are the frost lines be.
I mean anywhere!

Thanks, BTW, Great site.

Merry Christmas & Happy and Prosperous Year!
 
pollinator
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I would contact a local company that does septic installations and ask them.
 
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Or look for building codes in your area.  I suspect the thing you're looking for is the "frost depth".
 
Miro Rido
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that it becomes a tourist destination.............


Very scary thought!
Stay away is the motto    

OK, depth, is there a map of that kind of thing?
US, CND
 
Douglas Alpenstock
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Try this. It's not precise, but gives a ballpark figure. For my area, the numbers are high -- I would consider them safe burial depth, not frost depth.

http://urecon.com/applications/municipal_ambient_below.html
 
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As Douglas said, such maps are a good start, but there is room for a considerable margin of error.  As someone commented already, ask around your area. The local hardware store should be able to give you a good idea.
 
Mike Haasl
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Or plumbers or the building inspector or the code and building permit people or the general construction folks or the farmers or the old homesteaders...
 
John F Dean
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Mike,

To pick your brain, I ran into someone suggesting burying styrofoam panels over a more shallow water line. The idea was that the styrofoam would reduce the need for greater depth. Opinion?
 
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That will certainly work for freeze protection. As long as the styrofoam is thick enough, it will be as if the line is buried the actual vertical distance plus the horizontal distance under the styrofoam to the pipe.
 
Mike Haasl
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Yup, I agree with Glenn that it would work.  The idea is that the warmth of the earth is fighting the cold of the air and the temperature gradient in the ground displays the result.  So if you can put a layer of insulation in the ground, it will allow the heat from the earth to rise up closer to the surface.  I'm believe the width of the insulation is possibly more important than the R value.  

My wild guess would be that as long as the R value is 4 or better, for every 6" of insulation width (from the centerline of the pipe) you could bury it 6" shallower.  So if you had a 2' wide piece of styrofoam you could bury your pipe 1' above the frost line.  

Please note that I said this was my "wild guess" and it's been influenced by a bit of Amaretto this evening
 
John F Dean
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I am thinking that in the right circumstances it could be a reasonable approach.
 
Mike Haasl
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Another similar approach is a Shallow Frost Protected Foundation or Footing.  That's what I used on my greenhouse and I think it works in a similar way, allowing you to not have to go down 4'
 
John F Dean
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Hi Mike,
Looking up the r value of soil. I suspect there may be a greater benefit .  I am getting a r value of 0.25 per foot for soil.  Now my  mind is wondering about moist soil.  But, while I do appreciate your input, let's just accept that you and I differ on Amaretto.  My experience has led me to believe there is no suitable replacement, for me, for Kentucky  Single Barrel,  Bottled in Bond, Bourbon.
 
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