Frequently Misunderstood Wind Provisions

This session will begin by clarifying key concepts that underpin modern wind design, including the reason ASCE 7 wind loads are now based on ultimate-level wind speeds, the four separate wind maps, and how 3-second gusts compare to fastest-mile wind speeds. We’ll explore how ASCE 7 wind speeds correspond to hurricane categories, and review important definitions related to openings and building enclosure classifications. From there, the discussion will turn to practical applications, including drift and serviceability under wind loading, design for temporary structures, and the effects of shielding and building separation. We’ll also look at how wind pressures affect rooftop screen walls and balcony handrails—two elements that are frequently overlooked or misapplied in practice. Throughout the session, we’ll reference current codes and research to support rational and efficient wind design strategies for common and complex conditions alike.