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In solar mounting systems, the most common types are C Purlins and Z Purlins. C Purlins offer high strength and are often used for medium spans.
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Using the Modified ASCE Span Calculator, we determined purlins needed spacing at 48" centers. But here's the kicker - that changed to 42" after accounting for unexpected snow drift patterns. Always leave room for Mother Nature's curveballs!.
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Purlins are horizontal structural members that provide support to solar panels within a mounting system.
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