Liquefaction Assessment: SAFETY_FACTOR
Seismic soil liquefaction assessment parameters for the Seed-Idriss simplified procedure and Boulanger-Idriss 2014 update — CRR vs (N1)60cs (SPT) and qc1N (CPT) for clean sand, magnitude scaling factors (MSF) for Mw 5.5–8.5, stress reduction coefficient rd vs depth, Kσ overburden correction, CN normalization, fines content correction delta_N, Ishihara surface manifestation H1/H2 criteria, and factor of safety thresholds.
| assessment method | parameter key | parameter group | parameter name | unit | value max | value min | value typical |
|---|---|---|---|---|---|---|---|
| SAFETY_FACTOR | FS_threshold | design_criteria | Factor of safety against liquefaction triggering | dimensionless | 1.2 | 1 | 1.1 |
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