How do you calculate force exerted by wind?
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 much force is 70 mph wind?
| Wind Speed and Resulting Force on a Flat Vertical Surface | ||
|---|---|---|
| 70 | “ | 112.7 |
| 75 | 12 | 120.8 |
| 80 | “ | 128.8 |
How do you convert wind speed to pressure?
Wind pressure is given by the equation P = 0.00256 x V2, where V is the speed of the wind in miles per hour (mph). The unit for wind pressure is pounds per square foot (psf). For example, if the wind speed is 70 mph, the wind pressure is 0.00256 x 702 = 12.5 psf.
What is the force of 100 mph wind?
26.07 PSF
For Example, Speed of 100 mph gives 26.07 PSF. Important Note: This is the wind pressure calculated for the Basic Speed.
How wind speed is calculated?
Wind speed is normally measured by a cup anemometer consisting of three or four cups, conical or hemispherical in shape, mounted symmetrically about a vertical spindle. The wind blowing into the cups causes the spindle to rotate. Calibration corrections are applied to the measured wind speed.
How strong is 8 mph wind?
| Beaufort number | Description | Speed |
|---|---|---|
| 6 | Strong Breeze | 25 to 31 mph |
| 7 | Near Gale | 32 to 38 mph |
| 8 | Gale | 39 to 46 mph |
| 9 | Strong Gale | 47 to 54 mph |
Can 75 mph winds break windows?
The simple answer is yes. Hurricanes can produce extremely dangerous winds. A Category 5 storm can generate wind speeds of over 200 miles per hour. While steady wind may be unlikely to shatter a window, sudden, sharp gusts can add immense pressure to windows and doors and can break them.
What is the force of wind?
The speed and direction of the wind is governed by three forces; the pressure gradient force (PGF), the Coriolis Force and friction. PGF is the force produced by differences in barometric pressure between two locations and is responsible for the flow of air from an area of high pressure to an area of low pressure.
How much wind speed can a human withstand?
It wouldn’t be strong enough to peel your skin off. Humans can survive blasts of 500 mph wind, which is important because pilots sometimes need to eject from airplanes at those speeds.
What is high wind speed in km?
The Beaufort Scale – use at Sea
| Force | Description | Wind speed |
|---|---|---|
| 6 | Strong breeze | 40 – 49 km/h |
| 7 | Near gale | 50 – 61 km/h |
| 8 | Gale | 62 – 74 km/h |
| 9 | Strong gale | 75 – 88 km/h |