Aashto Load Factors: EXTREME_EVENT_I to SERVICE_III
AASHTO LRFD Bridge Design Specification load factors and load combinations per Table 3.4.1-1 (9th Edition 2020) — Strength I-V, Service I-IV, Fatigue I-II, Extreme Event I-II
| limit state | dc max (dimensionless) | dc min (dimensionless) | dw max (dimensionless) | dw min (dimensionless) | eq (dimensionless) | ll im symbolic | notes | tu cr sh max (dimensionless) | wa (dimensionless) |
|---|---|---|---|---|---|---|---|---|---|
| EXTREME_EVENT_I | 1.25 | 0.9 | 1.5 | 0.65 | 1 | gamma_EQ | Earthquake; gamma_EQ per Owner (typically 0.50); LL factor is owner-specified | 1 | 1 |
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