Concentric crack
A crack that runs in roughly circular arcs around the point of impact, joining radial cracks. The 4C rule applies: Concentric cracks have ridges on the same side as the Cause of force.
A crack that runs in roughly circular arcs around the point of impact, joining radial cracks. The 4C rule applies: Concentric cracks have ridges on the same side as the Cause of force.
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