1609.8.1 Design wind speed.
BC § 1609.8.1
Design wind speed during construction for a construction period of less than 5 years may be reduced as follows: Unless otherwise directed by the commissioner, the basic design wind speed may be reduced to 110 mph for all risk categories, corresponding to 1.7 percent probability of exceedance in 5 years. The basic design wind speed refers to the ultimate design 3-second gust wind speed at 33 feet (10 058.4 mm) above ground for Exposure Category C, as defined in Section 1609.3.
