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Frost line depth map?

 
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Tim and Steph
Guest





PostPosted: Sat May 07, 2005 9:44 pm    Post subject: Frost line depth map? Reply with quote

I live in Fairfax, VT, zip is 05454. I'm building a deck, and I'm going to
be pouring concrete into sonotubes. Everything I've read states that the
bottom of the sonotube must be below the frost line. Nowhere does it state
how deep that might be. I assume that the USDA or the department of the
Interior must have a map on this kinda thing, but for the life of me, I
can't find it. Any ideas?
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Tony Hwang
Guest





PostPosted: Sat May 07, 2005 9:52 pm    Post subject: Re: Frost line depth map? Reply with quote

Tim and Steph wrote:

Quote:
I live in Fairfax, VT, zip is 05454. I'm building a deck, and I'm going to
be pouring concrete into sonotubes. Everything I've read states that the
bottom of the sonotube must be below the frost line. Nowhere does it state
how deep that might be. I assume that the USDA or the department of the
Interior must have a map on this kinda thing, but for the life of me, I
can't find it. Any ideas?



Hi,

You local building inspector ought to know or building contrators.
It's 6 feet where I live.(Alberta). I don't think your wether is colder
than ours in winter.
Tony
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Colbyt
Guest





PostPosted: Sat May 07, 2005 9:59 pm    Post subject: Re: Frost line depth map? Reply with quote

"Tim and Steph" <uce@ftc.gov> wrote in message
news:F77fe.589$N_5.54@trndny09...
Quote:
I live in Fairfax, VT, zip is 05454. I'm building a deck, and I'm going
to
be pouring concrete into sonotubes. Everything I've read states that the
bottom of the sonotube must be below the frost line. Nowhere does it
state
how deep that might be. I assume that the USDA or the department of the
Interior must have a map on this kinda thing, but for the life of me, I
can't find it. Any ideas?




The USDA Zone map might be a good guideline. I am in Zone 6 next door to
you. Bottom of footing 18" below finished grade here.

Your local building inspection office can tell you for sure what it is in
your area.

BTW, around here at grade decks just float. Not sure what the rules are for
those over 8' off the ground.

Colbyt
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Edwin Pawlowski
Guest





PostPosted: Sat May 07, 2005 10:10 pm    Post subject: Re: Frost line depth map? Reply with quote

"Tim and Steph" <uce@ftc.gov> wrote in message
news:F77fe.589$N_5.54@trndny09...
Quote:
I live in Fairfax, VT, zip is 05454. I'm building a deck, and I'm going to
be pouring concrete into sonotubes. Everything I've read states that the
bottom of the sonotube must be below the frost line. Nowhere does it state
how deep that might be. I assume that the USDA or the department of the
Interior must have a map on this kinda thing, but for the life of me, I
can't find it. Any ideas?

The building inspector will know. Here it is 48" May bell be that in your
area a bit north of me.
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slatts
Guest





PostPosted: Sat May 27, 2006 5:01 am    Post subject: Re: Frost line depth map? Reply with quote

Tim and Steph Wrote:
Quote:
I live in Fairfax, VT, zip is 05454. I'm building a deck, and I'm going
to
be pouring concrete into sonotubes. Everything I've read states that
the
bottom of the sonotube must be below the frost line. Nowhere does it
state
how deep that might be. I assume that the USDA or the department of
the
Interior must have a map on this kinda thing, but for the life of me,
I
can't find it. Any ideas?

I live in Toronto. We're around the same latitude, and 42" is the
standard here. Building codes must err well on the safe side, so 42"
is probably more than safe. Unless you plan to have your local
government issue a building permit, then I can assure you that 42" is
perfectly safe.


--
slatts
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Tony Hwang
Guest





PostPosted: Sat May 27, 2006 6:01 am    Post subject: Re: Frost line depth map? Reply with quote

slatts wrote:

Quote:
Tim and Steph Wrote:

I live in Fairfax, VT, zip is 05454. I'm building a deck, and I'm going
to
be pouring concrete into sonotubes. Everything I've read states that
the
bottom of the sonotube must be below the frost line. Nowhere does it
state
how deep that might be. I assume that the USDA or the department of
the
Interior must have a map on this kinda thing, but for the life of me,
I
can't find it. Any ideas?


I live in Toronto. We're around the same latitude, and 42" is the
standard here. Building codes must err well on the safe side, so 42"
is probably more than safe. Unless you plan to have your local
government issue a building permit, then I can assure you that 42" is
perfectly safe.


Hi,

I am in Calgary. We go down 4 to 5 feet.
Local building inspector ought to know.
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Bill Kitterman
Guest





PostPosted: Sat May 27, 2006 12:00 pm    Post subject: Re: Frost line depth map? Reply with quote

"slatts" <slatts.28gjk5@diybanter.com> wrote in message
news:slatts.28gjk5@diybanter.com...
Quote:

Tim and Steph Wrote:
I live in Fairfax, VT, zip is 05454. I'm building a deck, and I'm going
to
be pouring concrete into sonotubes. Everything I've read states that
the
bottom of the sonotube must be below the frost line. Nowhere does it
state
how deep that might be. I assume that the USDA or the department of
the
Interior must have a map on this kinda thing, but for the life of me,
I
can't find it. Any ideas?

I live in Toronto. We're around the same latitude, and 42" is the
standard here. Building codes must err well on the safe side, so 42"
is probably more than safe. Unless you plan to have your local
government issue a building permit, then I can assure you that 42" is
perfectly safe.


--
slatts

Five feet would definately do you, but call 802 849-6111 and talk to the
building inspector first.

Bill
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John McGaw
Guest





PostPosted: Sat May 27, 2006 3:01 pm    Post subject: Re: Frost line depth map? Reply with quote

Tony Hwang wrote:
Quote:
slatts wrote:

Tim and Steph Wrote:
I live in Fairfax, VT, zip is 05454. I'm building a deck, and I'm going
to
be pouring concrete into sonotubes. Everything I've read states that
the
bottom of the sonotube must be below the frost line. Nowhere does it
state
how deep that might be. I assume that the USDA or the department of
snip...
Hi,
I am in Calgary. We go down 4 to 5 feet.
Local building inspector ought to know.

You got that exactly right. The magic number is whatever the local code
says it is and they aren't going to let facts about actual frost depth
into their considerations. In questions like this, it is always
mandatory to know what the local code says and then to stick to that or
go a little further. In the more restrictive codes they will also
require that the soil at the bottom of the hole is undisturbed
(generally worded something like "undisturbed mineral soil") and that
the area of the pour is sufficient to support the structure above.

--
John McGaw
[Knoxville, TN, USA]
http://johnmcgaw.com
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