What is the formula for wind speed?
Calculate a miles per hour wind speed in feet per hour, then divide by the number of feet in a knot. For the example wind speed of 100 mph, do as follows: 100 mph x 5,280 feet = 528,000 feet per hour; 528,000 feet per hour/6,080 feet = 86.8 knots.
How do you convert wind speed to mph?
Conversion formulas. Knots to mph and mph to knots
- V(knots) = 0.868976 * V(mph)
- V(mph) = 1.150779 * V(knots)
What does MS mean for wind?
m/s (meters per second)
How do you convert 3 second gust to basic wind speed?
How to Convert a Three-Second Gust to Basic Wind Speed
- Get the 3-second gust speed from the National Weather Service, by going to their website and entering your zip code.
- Subtract 20 if the 3-second gust is greater than 90 mph.
- Subtract 15 from the result if the 3-second gust is 90 mph or less.
How do you convert wind speed from km/h to MS?
1 m/s = 3.6 km/h = 1.944 knots (2.237 miles per hour)
How much wind is 9 mph?
| 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 |
How do you convert wind speed to wind load?
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.
What does kt mean in wind speed?
knot
In both meteorology and sea and air navigation, a knot is a unit typically used to indicate wind speed. Mathematically, one knot is equal to about 1.15 statute miles. The abbreviation for a knot is “kt” or “kts,” if plural.
What is ASD wind speed?
Vasd = Allowable stress design wind speed applicable to methods specified in Exceptions 4 and 5 of Section 1609.1. 1. V = Basic design wind speeds determined from Figures 1609.3(1) through 1609.3(8). For SI: 1 mile per hour = 0.44 m/s.
What is VASD wind speed?
Vasd= Nominal design wind speed (3-second gust), miles per hour (mph) (km/hr) where applicable. Vult = Ultimate design wind speeds (3-second gust), miles per hour (mph) (km/hr) determined from Figures 1609A, 1609B, or 1609C or ASCE 7.