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Due
to the shape of the earth anchor and the
offset attachment point of the wire tendon, when a load is applied,
the anchor will rotate in the ground by up to 90° and loadlock.
As the load exerted on the soil by the earth anchor system increases,
a body of soil above the anchor is compressed and provides resistance
to any further anchor movement. The size and spread of this body of
soil can be visualised as being a truncated cone or frustum. We refer
to this soil as the Frustum Cone.
The size and spread of a Frustum Cone will depend upon:
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