SELENA - An open-source tool for seismic risk and loss assessment using a logic tree computation procedure

١٣ ١٤ The era of earthquake risk and loss estimation basically began with the seminal paper on ١٥ earthquake, the first studies placed strong emphasis on the prediction of human losses ١٧ (number of casualties and injured) and to foresee the needs in terms of health care and ١٨ shelters in the immediate aftermath of a strong event. In contrast to the early risk modeling ١٩ efforts, the later studies have focused on the disruption of the serviceability of roads, ٢٠ telecommunications and other important lifeline systems. In the 1990's the National ٢١ Institute of Building Sciences (NIBS) developed a tool (HAZUS ® 99) for the Federal ٢٢ Emergency Management Agency (FEMA), where the goal was to incorporate the best ٢٣ quantitative methodology in the earthquake loss estimates. ٢٤ Herein, the current version of the open-source risk and loss estimation software SELENA ٢٥ v4.1 is presented. While using the spectral displacement-based approach (capacity spectrum ٢٦ method), this fully self-contained tool analytically computes the degree of damage on specific ٢٧ building typologies as well as the connected economic losses and number of casualties. The ٢٨ earthquake ground shaking estimates for SELENA v4.1 can be calculated or provided on ٢٩