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User guide: Tool for spatial inventory data development

The Global Earthquake Model (GEM) aims to provide a set of tools and models for hazard and risk analysis. The fundamental aim of the GEM Inventory Data Capture Tools (IDCT) risk global component is to provide a set of software and accompanying user protocols to enable users to collect and modify building exposure information, which can be input into the Global Exposure Database and the Global Earthquake Consequences Database.

This report provides a background and user manual for the Spatial Inventory Data Developer (SIDD). SIDD serves as a conduit between base data sets derived from both ground observations and remotely sensed sources processed in large part by the IDCT, and a GEM Exposure File (GEF). SIDD allows users to process exposure data largely through a process of assigning “mapping schemes”, or statistical summaries of construction type, occupancy, era, and story height to “homogenous zones”, or areas with sufficiently similar structure type distribution. SIDD is designed as a tool to simplify complex processes that structural engineers and GIS analysts must undertake to develop building exposures, but does not simplify the decision-making process itself. Therefore, it is recommended for advanced users with a background in developing building exposure databases for catastrophe (CAT) modelling and loss estimation.