// multi-utility computation suite · offline · instant · precise
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eng.design-wind-speed Calculator
Calculates design wind speed at a site from ASCE 7 maps, applying topographic, exposure, and directionality factors. Design wind speed corresponds to a 50-year mean recurrence interval — Risk Category IV structures (hospitals, emergency services) use a 100-year interval.
Inputs
Basic Wind Speed M S
Rate of movement. 1 m/s = 3.6 km/h = 2.237 mph.
Terrain Category
Reference formula or conversion factor shown for context.
Height M
Vertical measurement. For health calculators, typically standing height without shoes.
Return Period Years
Time for one complete cycle (s). Period = 1 / frequency. A 50 Hz signal has a 20 ms period.
Risk Category
Reference formula or conversion factor shown for context.
Results
design wind speed (m/s)
The computed rate of movement or processing.
dynamic pressure qd (kPa)
Sample size or count used in the calculation.
terrain factor kz
A dimensionless multiplier applied in the calculation.
return period factor kr
A dimensionless multiplier applied in the calculation.
importance factor I
A dimensionless multiplier applied in the calculation.
q = 0.5ρV²
Reference formula or conversion factor shown for context.