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Structural Damage Categories

Structural Damage Categories. LIGHT Safe to enter and remain MODERATE Hazardous to enter Enter only to save lives HEAVY Unsafe for CERT trained members to enter Contact professional rescuers. Light Damage. Superficial Cosmetics Fallen plaster Small cracks

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Structural Damage Categories

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  1. Structural Damage Categories • LIGHT • Safe to enter and remain • MODERATE • Hazardous to enter • Enter only to save lives • HEAVY • Unsafe for CERT trained members to enter • Contact professional rescuers

  2. Light Damage • Superficial • Cosmetics • Fallen plaster • Small cracks • Primary damage to contents of structure

  3. Moderate Damage • Structural stability questionable • Fractures greater than 1/4” • Significant Tilting • Foundation Movement or Displacement

  4. Heavy Damage • Partial or total wall collapse • Ceiling failure • Obvious structural instability • X-cracking

  5. X - CRACKING • Questionable Stability • Don’t enter • Beware of the impact zone

  6. Size-up Discussion

  7. Single Family Home - Pre-1933 • Foundation Movement • Not bolted down • Cripple wall failure • Utilities • Utility lines shear when home moves off foundation • Porches • Attached parts of homes will detach • Moderate damage expected

  8. SFH - Hillside • Unique hazards • Ground failure • Heavy damage expected • Always treated as HEAVILY DAMAGED during periods of earthquake

  9. Hillside - Cut & Fill • Fractures homes at the original grade point

  10. Shopping Centers

  11. WOOD FRAMED APARTMENTS

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