SayPro Wind Loading

Wind Loading

A mounted collector is exposed not only to sunlight and the rigors of ultraviolet light but

also to wind forces. For example, in parts of the world that are vulnerable to hurricanes or extreme wind storms, the collector and its mounting structure need to be able to withstand intermittent wind loads up to 146 miles per hour (Figure 2). This corresponds

to a pressure of about 75 pounds per square foot. Winds, and thermal contraction and

expansion may cause improperly installed bolts and roof seals to loosen over time. As

always, follow local code requirements for wind loading. Do not mount collectors near the ridge of a roof or other places where the wind load may be unusually high. Figure 3 shows a desirable location for a roof-mounted collector. Mounting collectors parallel to the roof plane helps reduce wind loads and heat loss.