HAZUS URMM - Precode

Description

Name: HAZUS URMM - Precode | General comments: Unreinforced Masonry Bearing Walls (URM): These buildings include structural elements that vary depending on the building’s age and, to a lesser extent, its geographic location. In buildings built before 1900, the majority of floor and roof construction consists of wood sheathing supported by wood framing. In large multistory buildings, the floors are cast-in-place concrete supported by the unreinforced masonry walls and/or steel or concrete interior framing. In unreinforced masonry constructed after 1950 (outside California) wood floors usually have plywood rather than board sheathing. In regions of lower seismicity, buildings of this type constructed more recently can include floor and roof framing that consists of metal deck and concrete fill supported by steel framing elements. The perimeter walls, and possibly some interior walls, are unreinforced masonry. The walls may or may not be anchored to the diaphragms. Ties between the walls and diaphragms are more common for the bearing walls than for walls that are parallel to the floor framing. Roof ties usually are less common and more erratically spaced than those at the floor levels. Interior partitions that interconnect the floors and roof can reduce diaphragm displacements. L: Low-Rise (range between 1 -2 stories) M: Mid-Rise (more than 3 stories) The present curves represent median values of equivalent-PGA fragility curves. They are based on median values of spectral displacement of the damage state of interest and an assumed demand spectrum shape that relates spectral response to PGA. As such, median values of equivalent PGA are very sensitive to the shape assumed for the demand spectrum. The reference spectrum represents ground shaking of a large-magnitude (i.e., M ≅ 7.0) western United States (WUS) earthquake for soil sites (e.g., Site Class D) at site-to-source distances of 15 km, or greater.Valid for: USA

Reference

From GEM Vulnerability Database: Yepes-Estrada C, Silva V, Rossetto T, et al. The Global Earthquake Model Physical Vulnerability Database. Earthquake Spectra. 2016;32(4):2567-2585. doi:10.1193/011816EQS015DP. https://github.com/gem/global_vulnerability_model/tree/main/_2016_Global_Vulnerability_Database Article: FEMA, HAZUS. HAZUS-MH MR3 Technical Manual, Technical manual. https://www.fema.gov/media-library/assets/documents/12110

License

This model is distributed under the Licence CC BY-NC-SA 4.0, Attribution-NonCommercial-ShareAlike 4.0 International - https://creativecommons.org/licenses/by-nc-sa/4.0/. If you wish to use this data for commercial purposes or if you have any questions about GEM licensing terms, please contact GEM at [email protected]. Please see the GEM Foundation Global Vulnerability Model repository for more information: https://github.com/gem/global_vulnerability_model/