Which statement identifies the exposure associated with open terrain?

Which statement identifies the exposure associated with open terrain?

• A. Exposure A
• B. Exposure B
• C. Exposure C
• D. Exposure D

Answer: (C)

Wind exposure categories show how nearby terrain and obstructions modify wind loads on a roof. Open terrain means there are few or no obstructions to shield the roof from wind, so the exposure description should refer to an unobstructed, wide-open area. The correct statement is the one that describes such unobstructed, open ground, since it matches the condition of open terrain. The other options describe environments with increasing shielding—like areas with buildings or other obstructions that reduce wind impact—so they are less representative of open terrain.

Wind exposure categories show how nearby terrain and obstructions modify wind loads on a roof. Open terrain means there are few or no obstructions to shield the roof from wind, so the exposure description should refer to an unobstructed, wide-open area. The correct statement is the one that describes such unobstructed, open ground, since it matches the condition of open terrain. The other options describe environments with increasing shielding—like areas with buildings or other obstructions that reduce wind impact—so they are less representative of open terrain.