Damage Classification

NameHAZUS (2010) - Storage Tank
Hazard TypeEarthquake
Plant Unit TypeStorage Tank
Description

Damage states for water storage tanks.

States
NoCodeNameDescription
1.DS1None

No damage.

2.DS2Slight/Minor

Minor damage without loss of content or functionality. Minor damage to the tank roof due to water sloshing, minor cracks in concrete tanks, or localized wrinkles in steel tanks.

3.DS3Moderate

Considerable damage, but only minor loss of content. Elephant foot buckling for steel tanks without loss of content, or moderate cracking of concrete tanks with minor loss of content.

4.DS4Extensive

Severe damage and going out of service. Elephant foot buckling for steel tanks with loss of content, stretching of bars for wood tanks, or shearing of wall for concrete tanks.

5.DS5Complete

Collapse and loss of all content.

ReferencesFEMA, "HAZUS-MH MR5 Technical Manual - Earthquake Model", 2010
AccessPublic
Created: Serkan GIRGIN, 2011/08/02 15:59:23 – Updated: Serkan GIRGIN, 2016/03/01 14:21:14

Risk States

NoDamage StateScenario ParametersValidity Conditions
1.DS1 (None)LOC State: None--
2.DS2 (Slight/Minor)LOC State: Minor--
3.DS3 (Moderate)LOC State: Moderate--
4.DS4 (Extensive)LOC State: Major--
5.DS5 (Complete)LOC State: Catastrophic--

Fragility Curves

NoNameParameterUnitValidity Conditions
1.HAZUS (2010) - Near Full, Anchoredlog μ̃PGAgBase Type: On-ground; Base Support Type: Anchored; Construction Material: Steel; Storage Condition: Atmospheric; Fill Percent: > 80 %v4-
2.HAZUS (2010) - Near Full, Unanchoredlog μ̃PGAgBase Type: On-ground; Base Support Type: Unanchored; Construction Material: Steel; Storage Condition: Atmospheric; Fill Percent: > 80 %v4-
3.Eidinger et al. (2001) - Fill ≥ 50%, Anchoredlog μ̃PGAgBase Type: On-ground; Base Support Type: Anchored; Construction Material: Steel; Storage Condition: Atmospheric; Fill Percent: > 50 %v41
4.Eidinger et al. (2001) - Fill ≥ 50%, Unanchoredlog μ̃PGAgBase Type: On-ground; Base Support Type: Unanchored; Construction Material: Steel; Storage Condition: Atmospheric; Fill Percent: > 50 %v41
5.Eidinger et al. (2001) - Fill ≥ 50%log μ̃PGAgBase Type: On-ground; Construction Material: Steel; Storage Condition: Atmospheric; Fill Percent: > 50 %v42
6.Eidinger et al. (2001) - Fill ≥ 60%log μ̃PGAgBase Type: On-ground; Construction Material: Steel; Storage Condition: Atmospheric; Fill Percent: > 60 %v43
7.Eidinger et al. (2001) - Fill ≥ 90%log μ̃PGAgBase Type: On-ground; Construction Material: Steel; Storage Condition: Atmospheric; Fill Percent: > 90 %v44
8.Eidinger et al. (2001)log μ̃PGAgBase Type: On-ground; Construction Material: Steel; Storage Condition: Atmospheric4-
9.Eidinger et al. (2001) - Fill < 50%log μ̃PGAgBase Type: On-ground; Construction Material: Steel; Storage Condition: Atmospheric; Fill Percent: < 50 %v22

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