What does Surface Roughness C refer to in exposure categories?

Surface Roughness C refers to open terrain with scattered obstructions. This classification is significant in the context of wind load calculations and design criteria outlined in building codes, particularly for structures exposed to wind.

In this category, the presence of scattered obstructions like low buildings or trees can have a minimal impact on wind flow compared to more densely built or wooded areas. Designers and engineers use this information to assess how wind interacts with structures and to determine appropriate design strategies for both safety and performance.

Understanding the characteristics of Surface Roughness C helps in predicting wind behavior, which is essential for ensuring that buildings can withstand the forces imposed by wind under various conditions. This information is vital for maintaining structural integrity while also influencing energy efficiency and occupant comfort within the designed space.