2020年8月3日 · The colors in the maps denote “seismic design categories” (SDCs), which reflect the likelihood of experiencing earthquake shaking of various intensities. (Building design and construction professionals use SDCs specified in building codes to determine the level of seismic resistance required for new buildings.)

New in the 2024 edition, IBC seismic hazard maps are now presented as SDC maps, similar but not identical to IRC SDC maps. Replace spectral response acceleration maps that were provided in previous editions

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If you find yourself uncertain about the Seismic Design Category (SDC) applicable to your project, it is typically outlined in the structural notes section of your construction drawings or listed in the project specification.

The 2024 editions of the Seismic Design Category (SDC) Maps for the International Residential Code (IRC) and International Building Code (IBC) were developed under FEMA’s responsibilities within the National Earthquake Hazards Reduction Program (NEHRP). These maps illustrate the varying earthquake demands

You can click on the map below to determine the seismic design category (SDC) and response parameter (S DS) for that location. The seismic design category (SDC) is calculated based on the design spectral response acceleration (S DS at Site Class = D, Risk Cat. = II), provided by the USGS Seismic API.

A hazard map is a map that highlights areas that are affected by or are vulnerable to a particular hazard. They are typically created for natural hazards, such as earthquakes, volcanoes, landslides, flooding and tsunamis. Hazard maps help prevent serious damage and deaths. Map. Earthquake. Volcano. Landslide. Flood. Tsunami

To the left is a seismic design category (SDC) map from FEMA’s web site. The map indicates the likelihood of experiencing shaking of different intensities in different areas of the country.

2024年4月9日 · These new maps will allow building officials, non-structural engineers, component manufacturers, and others to quickly identify a conservative SDC based on location alone. The ASCE Hazard Tool can be used to determine seismic design parameters, including SDC, based on location, soil class, and risk category.

County of San Diego Emergency Map. Please note that fire, evacuation, and other hazard boundaries are approximate and can change rapidly. This map is based on official mapping …