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This page is intended to help users get their own building fragilities into Ergo. 


File Types and Format

There are two acceptable formats, comma separated value (CSV) and Extensible Markup Language (XML). The simplest way to get fragilities into Ergo is the CSV format which will internally be converted to XML. Both formats will be explained in their own section after the field descriptions.

Field Descriptions

Field NameField DescriptionField TypeAcceptable ValuesInformational
IDUnique numeric identifier in the fragility datasetIntegerN/ANo
Fragility ID CodeUnique key for each fragility (e.g. SF_C1_1 for structural fragility for C1 structure type)StringN/ANo
AuthorIdentifies the person(s) who provided each fragility set.StringN/AYes
Structure TypeStructure Type this fragility curve is designed forStringN/AYes
StoriesIdentifies the number of stories used for the model building when constructing fragilities. .IntegerA value of “0” indicates multiple story levels were considered (for fragility surfaces)Yes
DescriptionA textual description providing information about the derivation of this fragility curve setStringN/AYes
Ground MotionsGround motion records used for time-history analyses when constructing fragilitiesStringN/AYes
CodeDesign code for the fragility setString Yes
Damage TypeThe type of damage type this fragility representsStringStructural, Non-StructuralYes
Demand TypeThe demand type required by the fragility, can include the period if applicable (e.g. 0.2 Sa )StringPGA, PGV, PGD, Sa, Sd, SvNo
Demand UnitThe units of the demand typeStringg, %g, etcNo
Limit StatesThe limit states which define the transitions between damage states for each fragility set.String3 limit states with a colon delimiter (e.g. Moderate: Extensive: Complete)No
T Eqn TypeEquation to estimate the natural period of a building.Integer1, 2, or 3 (see technical manual)No
Frag Eqn TypeFragility equation type.Double

1 - Lognormal distribution, 2 - Normal Distribution

ParametersThe number of fragility parameters (e.g. 6 if three curves with median and beta), 18 if a surface.IntegerN/A



Import Sample Fragility

You can download an example CSV file with fragility data here: Ergo_Fragility_Example.csv  After downloading the sample building fragility file, follow the steps found in the Bridge Fragility example to ingest the data. The only difference will be when selecting the data type, select Building Fragilities. The rest of the steps are identical.

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