Titel_SS06

Merci project (http://www.merci.ethz.ch/). The BPN illustrated in Figure 10.17 also includes
decision nodes such as to facilitate optimal decision making in regard to possible
strengthening of the existing structures.

Exposure

Vulnerability

Robustness

TimeEQ Prob. ofescape fatalitiesNo of Damage Ductilitycapacity Irregularity

interruptionBusiness

Age ofPeople injuriesNo. of

Density subclassSoil Period storiesNo of

Damping Structuralsystem

SPTCPT

Liquefact.suscept. Liquefact.triggering responseSoil Ductilitydemand

Planimetrymeasure Planimetrymeasure

Planimetrymeasure

PGA durationEQ Seismicdemand

TypeSoil

Averageslip Rupturelength Faulttype Flight height Aerialphotos

Directivit y magnitudeEQ distanceEQ Hangingwall Terrestrialphotos Resolution

GWlevel Lab testHCA Max.displ. Design code

Base shearcapacity Costruction

Structureclass quality

No of people Residualdispl.

Occupancyclass at risk

Costs Actions

Altimetrymeasure

Figure 10.17: Generic indicator based BPN for the assessment of earthquake risks for one building class.

In Figure 10.18 an illustration is given of the results of a generic risk assessment performed
using BPN’s integrated in a GIS database.

Damage State

Fully Operational

Life SafetyNear Collapse

Collapse

Operational

(^0) 0 – 200’000
200’000 – 400’000400’000 – 600’000
600’000 – 800’000
Total Risk [$]
Figure 10.18: Results of a risk assessment utilizing generic BPN risk models and GIS data bases for
storage and management of input and output to the risk models.