Section 78 of 105
76. Materials, Substitution and Local Resource Compatibility
Stable section ID: S05-CON-014-SECTION-78 · 19 content blocks
System05 shall permit diverse and locally available materials when they satisfy the applicable constitutional requirements.
Material selection and substitution shall consider:
- Strength and stiffness.
- Ductility and failure behavior.
- Durability.
- Fire performance.
- Moisture and temperature effects.
- Corrosion and galvanic interaction.
- Chemical compatibility.
- Toxicity and occupant health.
- Manufacturing variability.
- Inspection and repair.
- Environmental impact.
- Reuse and recovery.
- Interface and adhesive compatibility.
A material shall not be accepted as equivalent solely because it has a similar commercial name, nominal grade, appearance, or initial strength.
Substitution shall identify affected calculations, tests, tolerances, manufacturing processes, fire assemblies, environmental conditions, service life, and certification.
Regional Profiles may provide recommended materials and engineering solutions for regions with limited design or testing resources. These profiles shall preserve universal Interface behavior and mandatory safety outcomes.
Every approved substitution shall remain traceable to the affected asset, batch, configuration, and verification evidence.