From: Implication of bridge resilience design and lessons from negative examples
Performance | Factor | Value | |
---|---|---|---|
For the strength limit state | For all other limit states | ||
Ductility | ηD | ≥ 1.05 for nonductile components and connections = 1.00 for conventional designs and details complying with these Specifications ≥ 0.95 for components and connections for which additional ductility-enhancing measures have been specified beyond those required by these Specifications | = 1.00 |
Redundancy | ηR | ≥ 1.05 for nonredundant members = 1.00 for conventional levels of redundancy ≥ 0.95 for exceptional levels of redundancy beyond girder continuity and a torsionally-closed cross-section | = 1.00 |
Operational Importance | ηI | ≥ 1.05 for critical or essential bridges = 1.00 for typical bridges ≥ 0.95 for relatively less important bridges | = 1.00 |