How to measure success when using a shade structure?

Shading Parameters

When designing or evaluating a shade structure, consider the following parameters: the amount of solar radiation blocked, the angle of the sun, and the duration of shade provided. A well-designed structure can block up to 95% of direct solar radiation, which is crucial in desert environments where temperatures can reach as high as 120°F (49°C). For example, a simple lean-to structure with a 6-foot (1.8 meters) wide overhang can provide shade for a 2-person team during peak sun hours.

Measuring Shading Effectiveness

To measure the effectiveness of a shade structure, use a pyranometer or a lux meter to track the amount of solar radiation reaching the shaded area. The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) recommends a minimum of 25 foot-lamberts (ft-L) for comfortable outdoor conditions. By tracking the reduction in solar radiation and the corresponding increase in foot-lamberts, you can determine the effectiveness of your shade structure.

Human Factors

When assessing the success of a shade structure, also consider the human factors. For example, the structure’s height, angle, and wind resistance can impact the comfort and well-being of the occupants. A shade structure that is too low may not provide adequate protection from the elements, while one that is too high may be unstable in windy conditions. By considering these factors, you can design or select a shade structure that meets the needs of the people occupying it.