Earthquakes
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Cracked or damaged subfloor sheet cladding
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Building movement
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Earthquake
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Impact damage
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Sheets have become brittle with age
Texture-coated fibre-cement – vertical cracking at sheet joints
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Flush-stopped joint not properly reinforced and stopped
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Movement control joints not included
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Framing timber movement
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Moisture entry into building structure
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Building subjected to vibration movement such as earthquake, high wind
Texture-coated fibre-cement – horizontal cracking
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Horizontal movement control joints not included
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Framing timber movement
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Moisture entry into building structure
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Building subjected to vibration movement such as earthquake, high wind
Stucco – random hairline cracking
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Shrinkage as a result of incorrect plaster mix and/or inadequate curing
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Excessive trowelling during application
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No movement control joints installed
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Building movement or settlement
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Building subjected to vibration movement such as earthquake, high wind
Stucco – horizontal or diagonal surface cracking
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No movement control joints or poorly located movement control joints installed
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No additional reinforcing at corners of openings
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Poor application of texture coating
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Insufficient or a too large separation between reinforcing and backing
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Building movement or settlement
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Framing shrinkage
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Building subjected to vibration movement such as earthquake, high wind
Stucco – coating failure
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Lack of maintenance
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Paint at end of serviceable life
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Moisture levels in substrate too high when initially plastered
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Moisture getting into the plaster through hairline cracking
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Paint unsuitable to be used with cement-based plaster
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Building subjected to vibration movement such as earthquake, high wind
Hairline cracking in EIFS
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Shrinkage as a result of new plaster drying too quickly
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Poorly installed reinforcing
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Shrinkage of timber because wet framing was used
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No movement control joints installed
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Building movement or settlement
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Building subjected to vibration movement such as earthquake, high wind
Concrete patio – cracking
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Shrinkage cracking
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Thermal expansion/contraction and a lack of movement control joints
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Frost (on fresh concrete or where water is expanding within cracks during frosts)
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Building or land settlement
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Earthquake - the concrete was not reinforced
No lateral support (bracing) to piles
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Bracing was not installed (even if a house has been repiled) – typical in older houses
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Earthquake damage to existing bracing
External chimney separating from building
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Earthquake damage, or foundation settlement
Header tank not seismically braced or strapped
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No restraining straps
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Corroded fixings and/or straps
Pole foundations – pole damage/deterioration
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Inadequately treated timber
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Trapped moisture (typically where the pole is embedded into concrete)
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Excess loading of poles resulting in fracture or splitting
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Timber deterioration around rusty bolts
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Earthquake damage