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# Module: safe.impact_functions.earthquake.padang_building_impact_model

Impact function based on Padang 2009 post earthquake survey

This impact function estimates percentual damage to buildings as a function of ground shaking measured in MMI. Buildings are assumed to fall the 9 classes below as described in the Geoscience Australia/ITB 2009 Padang earthquake survey (http://trove.nla.gov.au/work/38470066).

## Class Building Type Median (MMI) Beta (MMI)

1 URM with river rock walls 7.5 0.11 2 URM with Metal Roof 8.3 0.1 3 Timber frame with masonry in-fill 8.8 0.11 4 RC medium rise Frame with Masonry in-fill walls 8.4 0.05 5 Timber frame with stucco in-fill 9.2 0.11 6 Concrete Shear wall high rise* Hazus C2H 9.7 0.15 7 RC low rise Frame with Masonry in-fill walls 9 0.08 8 Confined Masonry 8.9 0.07 9 Timber frame residential 10.5 0.15

class `safe.impact_functions.earthquake.padang_building_impact_model.``PadangEarthquakeBuildingDamageFunction`

  Risk plugin for Padang earthquake damage to buildings

  :param requires category==’hazard’ and subcategory==’earthquake’ and layertype==’raster’ and unit==’MMI’

  :param requires category==’exposure’ and subcategory==’structure’ and layertype==’vector’ and datatype in [‘osm’, ‘itb’, ‘sigab’]

  `run`(layers)

    Risk plugin for Padang building survey

This module forms part of the InaSAFE tool.

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