Section 59 of 105
57. Robustness, Redundancy and Progressive-Failure Control
Stable section ID: S05-CON-014-SECTION-59 · 18 content blocks
System05 structures shall be designed to resist disproportionate consequences from localized damage, error, deterioration, or failure.
Robustness measures may include:
- Alternate load paths.
- Structural redundancy.
- Compartmentalization.
- Connection ductility.
- Local damage tolerance.
- Controlled failure hierarchy.
- Isolation of damaged Modules or Cartridges.
- Tie forces.
- Arrest of progressive separation.
- Accessible post-event inspection.
- Temporary stabilization provisions.
A single local failure shall not unnecessarily cause the loss of several unrelated systems or a disproportionate portion of the building.
Redundancy shall be real and independently effective. Multiple elements sharing the same hidden vulnerability, manufacturing defect, environmental exposure, software dependency, or inaccessible connection shall not be represented as independent redundancy.
Critical Nodes, transitions, and low-redundancy regions shall receive verification rigor proportionate to their system consequence.
Changes, removals, penetrations, repairs, and upgrades shall be reviewed for their effect on robustness and alternate load paths.
Progressive-failure analysis shall consider both the permanent building and vulnerable temporary assembly or disassembly states.