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RE: Cold Weather

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No. The reason to place foundations below the frost line is to mitigate heave of the foundation due to the formation of frost lenses primarily in clayey soils. That is not an issue with a French drain.

Harold Sprague

From: "John L. Smart" <smartj(--nospam--at)>
Reply-To: <seaint(--nospam--at)>
To: <seaint(--nospam--at)>
Subject: Cold Weather
Date: Wed, 11 Jan 2006 12:54:48 -0500

Everyone knows that you have to have you footings below the frostline,
but do I need to have a French drain below the frostline? I've got an
invert elevation problem.

John L. Smart, PE
Lindsey & Ritter, Inc.

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