Wind Speed and Pressure Calculation Questions

What is the conversion factor from miles per hour (mph) to feet per second (ft/s)?

• 1 mph ≈ 1.467 ft/s

• 1 mph ≈ 0.682 ft/s

• 1 mph ≈ 1.151 ft/s

• 1 mph ≈ 0.914 ft/s

Fill in the blank: 1 knot is approximately equal to _____ miles per hour (mph).

• 1.467

• 0.682

• 1.151

• 0.914

Convert 40 mph to feet per second (ft/s).

• 58 ft/s

• 68 ft/s

• 78 ft/s

• 88 ft/s

Calculate the wind load on a sign with an area of 40 ft² when the wind pressure is 6.4 psf.

• 56 lbs

• 156 lbs

• 256 lbs

• 356 lbs

The Beaufort scale is used to relate wind speed to observed conditions on land or sea. True or False?

• True

• False