Linear Weight (kg/m) vs Structural Rigidity: Engineering Wall Thickness
Balancing aluminum tonnage with structural safety margins in rooftop and ground-mounted photovoltaic systems.
Key Engineering Takeaways
- ✓ Linear weight optimization directly reduces shipping freight and raw metal cost
- ✓ Tighter extrusion tolerances eliminate overweight material penalties
- ✓ Web thickness below 1.2mm increases risk of local buckling under concentrated loads
Linear Weight as the Direct Cost Driver in B2B Solar
Because structural aluminum is traded internationally by metric ton based on the London Metal Exchange (LME), an optimized linear profile weight directly lowers the per-watt mounting cost of a solar plant. A reduction from 0.95 kg/m to 0.78 kg/m without sacrificing moment of inertia saves up to 18% in project aluminum capital.
Wall Thickness Tolerances per EN 12020-2
High-precision extrusion dies allow tighter wall thickness control (+/-0.15mm vs generic +/-0.30mm). This precision prevents heavy overweight bars while ensuring critical bolt channels maintain required thread engagement depth.
Frequently Asked Technical Questions
What is the tolerance on profile linear weight?
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