How do you calculate PSF from wind speed?

How do you calculate PSF from wind speed?

Armed with pressure and drag data, you can find the wind load using the following formula: force = area x pressure x Cd. Using the example of a flat section of a structure, the area – or length x width – can be set to 1 square foot, resulting in a wind load of 1 x 25.6 x 2 = 51.2 psf for a 100-mph wind.

How do you convert wind speed to pressure?

Is 32 mph wind strong?

– at 32 to 38 mph, whole trees will be in motion. You’ll experience some difficulty when walking into the wind. – at 39 to 46 mph, branches and limbs can be broken from trees. – above 64 mph, expect widespread structural damage.

At what speed do winds become dangerous?

“An Extreme Threat to Life and Property from High Wind.” “Damaging high wind” with sustained speeds greater than 58 mph, or frequent wind gusts greater than 58 mph. Damaging wind conditions are consistent with a high wind warning.

Is it safe to drive in 60 mph winds?

A high wind warning is more severe, and the service recommends that people refrain from any unnecessary driving. Sudden wind gusts can easily cause drivers to lose control of their vehicle.

What wind speed can move a car?

According to the engineers that helped devise the Enhanced Fujita Scale, winds of between 111 – 135 m.p.h. are enough to lift and move average sized cars.

Can strong wind move a car?

The wind force flexes the tires (and the car’s suspension) slightly. At 80 MPH, the tires are spinning quite rapidly, so small displacements can cause the car to move quite rapidly.

Is it dangerous to drive in 20 mph winds?

20 MPH is less than the average days wind speed in parts of the midwest. If YOU don’t feel in complete control, then it’s not safe. 20mph is normally OK, but what you need to find out is whether there will be higher gusts expected. It is usually the sudden gusts that can catch a driver unawares and make it dangerous.

How many miles per hour is a gale force wind?

A gale is a strong wind, typically used as a descriptor in nautical contexts. The U.S. National Weather Service defines a gale as 34–47 knots (63–87 km/h, 17.5–24.2 m/s or 39–54 miles/hour) of sustained surface winds. Forecasters typically issue gale warnings when winds of this strength are expected.