Problem 2.18
Mean recurrence interval for basic wind speed: 50 years
See lengthy discussion in commentary.
source
annual exceedance probability annual
recurrence
intervalas percent as probability 50% 0.50 2-year 20% 0.20 5-year 10% 0.10 10-year 4% 0.04 25-year 2% 0.02 50-year 1% 0.01 100-year
Mean recurrence interval for wind on essential and hazardous facilities: 100 years
occupancy category IV from ASCE 7 table 1-1
importance factor 1.15 from ASCE 7 table 6-1
Height used for building-height-and-exposure adjustment factor, λ: mean roof height