frost line

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Related to Frostline: Freezing depth

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 ?
The Blown Film Extrusion Simulator is said to show realistic interaction among screw speed, nip speed, and cooling air on bubble dimensions, thickness, and frostline.
So, to maximize barrier, extrude PE blown film with a high BUR, high frostline, and narrow die gap.
Its TC-50B, HD system for HDPE has a new computer system for HDPE has a new computer system that controls layflat width by means of an electric eye, throughput rate and average film thickness by gravimetric feeding control, and frostline position by means of optical sensing and cooling-air regulation.