Of these incidents, the frequently cited was frost heave
, followed by failures due to snow or ice movement.
As impressive as frost heave
can be, as far as buildings go, who cares about how high frost heave
can go if the direction of heave
5 : to be thrown or raised up <Frost caused the ground to heave
Once frost heave
has thus corralled the stones into clusters, it squeezes those clusters into piles or mounded stripes, says Kessler.
In 1989, Dash proposed that modest temperature differences can drive flows in these liquid surface films and contribute to frost heave
Usually the heave
is slow, creeping only a fraction of an inch over days.
Though researchers have proposed many theories to explain this "frost heave
," the mechanism has remained unclear.
are most common in poorly drained soil, so first try regrading around the exterior to keep rainwater away from the slab.