frost line


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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.
References in periodicals archive ?
The heater cable had to be below frost line in the well itself, and it then had to travel over land, and through the tool shed to the pump room.
examination of piping buried above the frost line for evidence of deflection at joints during opportunistic excavations for other work, and
Two more ultrasonic sensors are aimed at the bubble above the frost line, where bubble size is stable, to calibrate the lower sensors and ensure the size is kept constant.
A second set of two ultrasonic sensors are aimed at the bubble above the frost line where bubble size is stable to calibrate the lower sensors to ensure the size is kept constant.
I was told that in order to build a fence in such a cold climate, you needed to go down 3 feet to below the frost line and it was just too costly," Pat Kirkpatrick of Eugene - and a former Wisconsinite - wrote.
In Charlotte, the frost line is 12 inches below the surface, which means the cost to exhume and construct an unfurnished basement typically runs as high as $22,000 to $24,000.
Protecting footings for houses and other buildings from damage due to frost heaves is typically accomplished by installing the footings below the frost line.
Last year their frost line was 11 feet, that's why we dug so deep.
The best solution to this issue is to bury the water line below the frost line.
The SmartLip thickness profile control system allows the air streams of the individual segments to be controlled separately during the production process using a capacitive sensor, which measures the thickness profile of the film above the frost line.
The Valley, they explain, is mostly above the frost line so people can grow just about anything from hibiscus to Rose of Sharon to Madagascar jasmine (commonly known as stephanotis).