Mapping Earthquake Prone Buildings

The New Zealand Herald has created an interesting mapped tour of Wellington's Earthquake Prone Buildings. The map shows the place of the 95 Wellington buildings which induce got unreinforced masonry as well as the 699 buildings which are earthquake prone. The map too identifies hotspots where unsafe buildings are located inwards areas amongst large numbers of pedestrians.

The map effectively uses Mapbox GL to furnish a bird's middle sentiment of Wellington amongst 3d buildings (the earthquake prone buildings are colored ruby on the map). This 3d sentiment of the urban pith is combined amongst a storey map format as well as so that the Herald tin accept its readers on a tour of the city's vulnerable buildings as well as unsafe hotspots.

The map uses extrusions to display the 3d buildings. This is neatly combined amongst the story map format to plough over a existent feel of flight over the city's buildings. This tour of the urban pith is supported yesteryear the Herald's analysis of the city's earthquake prone buildings as well as the danger that they pose to the city. This analysis appears inwards the scrolling map side-panel.


In New Zealand all buildings remove to last assessed yesteryear constabulary to position which buildings are earthquake prone. The New Zealand Herald were able to purpose this information to exercise their map of Wellington's earthquake prone buildings. In the USA the Oregonian had to accept a dissimilar approach inwards mapping the Oregon buildings almost prone to earthquake damage.

In 1974 Oregon enacted its offset statewide edifice code. In 1993 western Oregon adopted its offset seismic standards. Franz Rad, a professor of civil & environmental applied scientific discipline at Portland State University, argues that these dates furnish a "broad-brush await at the vulnerability of buildings".

Earthquakes: How Vulnerable are Portland’s Buildings? uses Portland edifice historic menses information to assess which buildings are almost earthquake prone. Building footprints are colored on the map to present buildings constructed earlier 1974, those constructed betwixt 1974 & 1993 as well as buildings erected afterwards 1993. You tin thus purpose the map to assess the ('broad-brush') vulnerability of whatever Portland edifice to earthquake damage.