|
Posted by DerbyDad03 on September 17, 2007, 6:27 pm
> Don't believe the map, it shows my area at 35 inches, where the legal depth
> requirement is 48" and frost has been found at 60 inches. You need to check,
> with a simple phone call, or possibly your town's web site, to find what the
> legal depth requirement for frost proofing is in your locality.
>
>
>
>
>
> >> hdmundt wrote:
> >> > How do I find out the depths of frost lines in different cities/
> >> > states? Is there a free internet source for this information?
> >> > Thanks.
>
> >> Google found this as the first hit searching for: frost line
> >> maphttp://www.mtchise.com/Frostline_Map.htm
>
> >> MikeB
>
> > Thank you. I'm not a contractor, I don't know the lingo. I'm just a
> > feller considering digging some post holes for a small deck,
> > (precisely why I came to this group looking for help). My queries
> > didn't include the word "map".
> > Thank you, again, for a helpful reply to my post.- Hide quoted text -
>
> - Show quoted text -
-- re: Don't believe the map
Do believe the map. It shows the official frost line, as determined by
the U.S. Department of Commerce Weather Bureau, for the areas
outlined.
The map does not purport to tell us how deep to place our foundations
or fence posts. That depth, as many have mentioned in this thread, is
determined by whatever agency is responsible for the building codes in
our area. There are many more factors, besides the frost line, that go
into how deep to place a foundation or fence post in any given area.
So go ahead and believe the map - but only for what it is telling us.
| 
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap