Table 3 NEHRP based site characterization1.
Site Class | Site Description | \(V_{S30}\), in m/s | \(N_{30}\) |
|---|---|---|---|
A | Hard rock | > 1500 | – |
B | Rock | 760–1500 | – |
C | Very dense soil and soft rock | 360–760 | > 50 |
D | Stiff soil | 180–360 | 15–50 |
E | Soft soil | < 180 | < 15 |
Site Class | Site Description | \(V_{S30}\), in m/s | \(N_{30}\) |
|---|---|---|---|
A | Hard rock | > 1500 | – |
B | Rock | 760–1500 | – |
C | Very dense soil and soft rock | 360–760 | > 50 |
D | Stiff soil | 180–360 | 15–50 |
E | Soft soil | < 180 | < 15 |
