2. How do cracks form?
• Breaking of material when stressed
• Stresses include water loss and animal stepping
• Soil compaction can change crack shape and depth
3. Why should we care about
crack shapes?
• Cracks are holes,
but many different
types of holes
• Water loss and
drying can be
greater or lesser
depending on hole
type
4. How do we measure cracks?
• Solid casts
made from
pouring resin
into cracks