1. Design Principles
Ensure proper drainage (slope ≥1:12)
Avoid water-trapping designs; maintain ≥50mm ground clearance
2. Fabrication Requirements
Cutting: Plasma/laser preferred; grind oxy-fuel cut edges
Welding: Use matching electrodes (e.g., J557CrNiCu), preheat if >25mm thick
Forming: Cold bend at ≥2x thickness; limit hot-forming to <600°C
3. Surface Treatment
Remove mill scale via sandblasting (SA2.5)
Allow natural patina formation (6–18 months) or use rust accelerants
4. Prohibited Practices
Do not paint (except with weathering-compatible coatings)
Avoid contact with carbon steel/stainless to prevent galvanic corrosion
5. Maintenance
First 2 years: Remove loose rust quarterly, ensure drainage
Long-term: Annual inspections, monitor salt accumulation
6. Environmental Suitability
Best for: Urban/rural atmospheres
Avoid: Coastal zones (<0.5km) or chemical-heavy environments
