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Beyond Button Pushing

Technical Reports | 31 May 2017 > The 'Beyond Button Pushing' project aims to show how important the quantification of uncertainty is in estimating and understanding California’s earthquake risk. The project uses OpenQuake, GEM Foundation’s state-of-the-art open source earthquake hazard and risk assessment software.

Guidelines for component-based analytical vulnerability assessment of buildings and nonstructural elements

Technical Reports | 29 Feb 2016 > A procedure is offered for the analytical derivation of the seismic vulnerability of building classes, that is, probabilistic relationships between shaking and repair cost as a fraction of replacement cost new for a category of buildings. It simulates structural response, damage, and repair cost for the structural and non-structural components that contribute most to construction cost, and then scales up results to account for the components that were not simulated. It does so for a carefully selected sample of building specimens called index buildings whose designs span the domain of up to three features that are believed to most strongly influence seismic vulnerability within the building class. One uses moment matching to combine results for the index buildings to estimate behaviour and variability of the building class. One can simulate non-structural vulnerability alone by ignoring damage and repair cost for structural components. The work is written for a structural engineer with a master’s degree, skilled in structural analysis, but not necessarily experienced in loss modelling.

Sub-Saharan Africa Geodetic Strain Rate Model 1.0

Technical Reports | 11 Dec 2015 > In this report we describe the Sub-Saharan Africa Geodetic Strain Rate Model 1.0, which is a contribution to the Global Earthquake Model Foundation (GEM) Strain Rate Project.

GEM Faulted Earth Project

Technical Reports | 10 Sep 2015 > This is the final report of the GEM Faulted Earth Project (GFE), which was active between 2010 and 2013.

Guidelines for Analytical Vulnerability Assessment - Low/Mid-Rise

Technical Reports | 25 Aug 2015 > Guidelines (GEM-ASV) for developing analytical seismic vulnerability functions are offered for use within the framework of the Global Earthquake Model (GEM). Emphasis is on low/mid-rise buildings and cases where the analyst has the skills and time to perform non-linear analyses.

Existing Empirical Fragility and Vulnerability Relationships: Compendium and Guide for Selection

Technical Reports | 18 Aug 2015 > This document reviews existing empirical vulnerability and fragility functions worldwide in terms of their characteristics, data sources and statistical modelling techniques.

Risk Modellers' Toolkit - Manual

Technical Reports | 29 Jul 2015 > A suite of tools for creating the input models required for running seismic risk calculations using the OpenQuake-engine.

Guidelines for empirical vulnerability assessment

Technical Reports | 15 Apr 2015 > These Guidelines provide state-of-the-art guidance on the construction of vulnerability relationships from post-earthquake survey data.

Introduction to the GEM Earthquake Consequences Database (GEMECD)

Technical Reports | 25 Mar 2015 > From the inception of the GEM Global Earthquake Consequences Database (GEMECD) the ambition was that the database will serve to inform users on consequences from past events, as a benchmarking tool for analytical loss models and to support the development of tools to create vulnerability data appropriate to specific countries, structures, or building classes.

Global Exposure Database - scientific features

Technical Reports | 29 Jan 2015 > The aim of this report is to provide a comprehensive documentation of the GED4GEM project and its results, the Global Exposure Database (or GED).