<p>The response of shallow sites, with depth to bedrock less than 100 feet, in the geologic and tectonic setting of the Eastern United States (EUS) cannot generally be captured with code-based site factors. The need to address this issue on a regional basis ...

In this paper evaluating strong motion recordings and the patterns of damage at sites with known geological and geotechnical conditions, has shown that very stiff soils and soft rocks present different horizontal accelerations unlike the US and the European ...