01 / 5 · Practical Engineering
Most of us think about erosion on the surface of the earth, but erosion can occur in the subsurface as well.
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Larger particles like gravel and more resistant to erosion than small particles like silt or clay.
Over time (or sometimes over the course of a single flood), that water can create erosion, undermining the structure.
Many foundations are specifically designed to combat erosion, either with hard armoring or by simply being installed so deep into the earth that they can’t be undermined by quickly flowing water.
The national government reserved an area around that peak, to help defend against flash floods and erosion.
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