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frost line

   Also found in: Dictionary/thesaurus, Financial, Wikipedia 0.01 sec.
frost line [′frȯst ‚līn]
(geology)
The maximum depth of frozen ground during the winter.
The lower limit of the permafrost.
(materials)
In polyethylene film extrusion, a ring-shaped area with a frosty appearance at the point where the film reaches its final diameter.
frost line
An imaginary line indicating the depth of frost penetration in the ground.
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A winter leachate distribution system was then developed by laying "drip tubing" below the frost line, allowing for year round distribution.
Hope for leachate by Frost, Calvin / Label & Narrow Web
Woodchuck tunnels normally are deep - just below frost line - and about 40 feet long, complexly dug with several amenities, including chambers analogous to a baby room, bathroom and bedroom.
Woodchuck chuckin' time by Telegram & Gazette (Worcester, MA)
A Roman-style footer In reading up on Roman architecture we learned that the Romans created their footers, (underground foundations for the above-ground structures they built), by digging down below the frost line and by throwing "rubble" (chunks of stone) into the hole.
Build it with stone ... build it for FREE! Learn how, at the school ... by Cundiff, Bill / Countryside & Small Stock Journal
 
 
 
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