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Planning for roof-mount solar in high wind areas involves assessing local wind loads, selecting suitable panel and racking systems, and incorporating robust structural reinforcements.
Assessing Wind Loads
When planning for roof-mount solar in high wind areas, it’s essential to assess local wind loads using the local building code or wind maps. For example, in regions with high wind speeds (over 120 mph), you may need to design the solar array to withstand wind loads of 1.5-2.0 psf (pounds per square foot). This requires consulting with a structural engineer to validate the design and ensure compliance with local building codes.
Selecting Suitable Panel and Racking Systems
To ensure the solar array can withstand high wind loads, select panel and racking systems designed for extreme weather conditions. Look for products with a high wind rating, such as those with a Wind Survival Factor (WSF) of 1.5 or higher. Some popular racking systems for high wind areas include ballasted racking systems, which use weight to hold the panels in place, and structural racking systems, which integrate with the building’s structural elements.
Structural Reinforcements
In addition to selecting suitable panel and racking systems, consider incorporating structural reinforcements to ensure the building can withstand high wind loads. This may include installing additional roof anchors, reinforcing roof decking, or using wind-resistant roofing materials. Consult with a structural engineer to determine the necessary reinforcements and ensure they are properly integrated with the solar array design.
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