structural damage categories ► light safe to enter and remain ► moderate hazardous to enter ...

Structural Damage Structural Damage CategoriesCategories►LIGHTLIGHT

Safe to enter and remainSafe to enter and remain

►MODERATEMODERATE Hazardous to enterHazardous to enter Enter only to save livesEnter only to save lives

►HEAVYHEAVY Unsafe for CERT trained members to enterUnsafe for CERT trained members to enter Contact professional rescuersContact professional rescuers

Light Light DamageDamage

►SuperficialSuperficial►CosmeticsCosmetics►Fallen plasterFallen plaster►Small cracksSmall cracks►Primary damage to Primary damage to

contents of structurecontents of structure

Moderate Moderate DamageDamage

► Structural stability Structural stability questionablequestionable

► Fractures greater Fractures greater than 1/4”than 1/4”

► Significant TiltingSignificant Tilting► Foundation Foundation

Movement or Movement or DisplacementDisplacement

Heavy DamageHeavy Damage

Partial or total wall Partial or total wall collapsecollapse

Ceiling failureCeiling failure Obvious structural Obvious structural

instabilityinstability X-crackingX-cracking

Partial or total wall Partial or total wall collapsecollapse

Ceiling failureCeiling failure Obvious structural Obvious structural

instabilityinstability X-crackingX-cracking

X - X - CRACKINGCRACKING►Questionable Questionable

StabilityStability

►Don’t enterDon’t enter

►Beware of the impact Beware of the impact zonezone

Size-up DiscussionSize-up Discussion

Single Family Home - Pre-Single Family Home - Pre-19331933 Foundation Foundation

MovementMovement Not bolted downNot bolted down Cripple wall failureCripple wall failure

UtilitiesUtilities Utility lines shear Utility lines shear

when home moves when home moves off foundationoff foundation

PorchesPorches Attached parts of Attached parts of

homes will detachhomes will detach Moderate damage Moderate damage

expectedexpected

SFH - HillsideSFH - Hillside

► Unique hazardsUnique hazards► Ground failureGround failure► Heavy damage Heavy damage

expectedexpected► Always treated Always treated

as as HEAVILY HEAVILY DAMAGEDDAMAGED during periods during periods of earthquakeof earthquake

Hillside - Cut & FillHillside - Cut & Fill

► Fractures Fractures homes at the homes at the original original grade pointgrade point

Shopping Shopping CentersCenters

WOOD FRAMED WOOD FRAMED APARTMENTSAPARTMENTS