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10 cards from this deck
When building moves downward from original position
Only part of structure settles below rest
Creates uneven stresses causing structural failure
Equals tree's mature height
Absorb water causing soil shrinkage
Area fills with water causing heave (swelling)
Water freezes, expands, lifts foundations upward
In hardcore layer beneath foundations
Sulphuric acid
Lifts internal floor slabs and damages supports
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