Wind Resistant Design AIJ Recommendations for Wind Loads on ...

Equivalent Directional
<strong>Design</strong> <strong>Wind</strong> Speed U D
2. Calculation of equivalent return
period causing the same 100-year
recurrence wind load effect in the
most unfavorable case
3. Calculation of average directional
wind speeds U D based on the
equivalent return period <strong>for</strong> various
cases at each meteorological site
Equivalent Directional
<strong>Design</strong> <strong>Wind</strong> Speed U D
Ave. ± σ
(m/s)
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