frost line


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frost line

The depth of frost penetration into the soil.It varies from area to area,depending on the soil quality in a particular location, but can average 3 to 4 feet below the surface. Building foundations should penetrate below the frost line in order to avoid the shifting caused by frost heaving. Many local building codes allow an exception with the use of a frost-protected shallow foundation, which uses insulation and drainage techniques to raise the frost line to just below the surface.

References in periodicals archive ?
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.
A winter leachate distribution system was then developed by laying "drip tubing" below the frost line, allowing for year round distribution.
So here's what I'm left with: I can dig another composter that goes well below the three to four foot frost line and hope I can keep it active.
"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.
Protecting footings for houses and other buildings from damage due to frost heaves is typically accomplished by installing the footings below the frost line. For homes without basements, the construction options usually considered are 1) a separate footing, foundation curtain wall, and concrete slab or 2) a separate footing, foundation curtain wall, and crawlspace.
In colder states, there's another problem with top soil: It sits right in the frost line, says Neil O.
Some amenities require the stability afforded by a footing that extends below the frost line. The actual depth to avoid frost heaving varies based on geographic location.
Troubleshooting the process with the old controllers was difficult; operators would be tipped off to a temperature production problem by observing subtle changes in the bubble's frost line, the point where the polymer changes from liquid back to solid.
Depths of the line were a minimum of 5 feet to ensure that the pipes were deeper than frost line, while some pipes were buried as deep as 9 feet under small sections of pavement.
"We had to dig a 10-foot-deep trench due to the frost line," said Master Sgt.
The best solution to this issue is to bury the water line below the frost line. Many organizations have the predisposed notion that it will cost too much.