Map of seismic subsoil categories according to the standard SIA 261
This dataset provides indicative maps of seismic site (subsoil) classes used to determine seismic action on structures under the Swiss building code SIA 261. Published by the Swiss Confederation, it covers the national territory but is not parcel-specific; where uncertainty exists, classification defaults to the safer category. The maps are primarily intended as a preliminary reference for engineers and planners assessing earthquake-related design requirements, and should be supplemented by site-specific geotechnical investigation where precision is required.The site class is a required indication to determine the seismic action for a structure according to the building code SIA 261. The maps of site classes are indicative maps and are not parcel-specific. In case of uncertainties, the site class is mapped on the safe side. The maps are primarily usefu…
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Data schema (3 fields)
| Field | Type | Description |
|---|---|---|
| bgkch.bafu.gefahren-baugrundklassen.bgk | varchar | Seismic subsoil (site) class assigned to the area.Seismic subsoil (site) class assigned to the area. |
| idch.bafu.gefahren-baugrundklassen.id | integer | Unique identifier for the seismic subsoil category record.Unique identifier for the seismic subsoil category record. |
| referenzReference standard | varchar | Reference standard used to determine the site class.Reference standard used to determine the site class. |
Schema captured from arcgis 21 days ago.
Verification Status
Using the API
Configuration
- Base URL
- https://api3.geo.admin.ch/rest/services/api/MapServer/ch.bafu.gefahren-baugrundklassen
Query examples
curl -s 'https://api3.geo.admin.ch/rest/services/api/MapServer/ch.bafu.gefahren-baugrundklassen?f=json' -H 'Accept: application/json'Layer definition: fields, geometry type, capabilities.
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