The calculated story drift due to wind pressures with ultimate design wind speed, Vult , shall not exceed 0.008 times the story height for buildings less than 65 feet (19 812 mm) in height or 0.007 times the story height for buildings 65 feet (19 812 mm) or greater in height.
Exception: [DSA-SS] This story drift limit need not be applied for single-story open buildings in Risk Category I and II.
Exception: [OSHPD 1 & 4] This story drift limit need not be applied for single-story open structures.