Research Article
Constant Ductility Site-Specific Yield Point Spectra for Seismic Design
Table 2
Site classifications defined in NEHRP [
30].
| | Soil type | Shear wave velocity, VS30 (m/s) | Number of ground motions |
| | B | 760–1500 | 192 | | C | 360–760 | 173 | | D | 180–360 | 173 | | E | <180 | 73 |
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