Which statement best describes the relationship between wind speed and wind pressure?

Which statement best describes the relationship between wind speed and wind pressure?

• A. Wind speed increases generally lead to higher wind pressures
• B. Wind pressure depends only on direction, not speed
• C. Wind speed has no effect on wind pressure
• D. Wind speed decreases wind pressure

Answer: (A)

Wind pressure rises as wind speed increases because the dynamic or velocity pressure is proportional to the square of the wind speed. This means faster winds push harder on surfaces, and the relationship is not linear—doubling the speed leads to roughly four times the pressure, tripling the speed leads to about nine times the pressure. In practice, design codes use this V^2 relationship to convert wind speeds into pressure on roofs and walls, with factors for direction, exposure, and other conditions, but the core idea is that higher wind speeds produce higher pressures. That’s why statements that pressure depends only on direction or that speed has no effect aren’t accurate, and why the notion that speed decreases pressure doesn’t fit the fundamental physics.

Wind pressure rises as wind speed increases because the dynamic or velocity pressure is proportional to the square of the wind speed. This means faster winds push harder on surfaces, and the relationship is not linear—doubling the speed leads to roughly four times the pressure, tripling the speed leads to about nine times the pressure. In practice, design codes use this V^2 relationship to convert wind speeds into pressure on roofs and walls, with factors for direction, exposure, and other conditions, but the core idea is that higher wind speeds produce higher pressures. That’s why statements that pressure depends only on direction or that speed has no effect aren’t accurate, and why the notion that speed decreases pressure doesn’t fit the fundamental physics.