Part 2: Seismic and Wind Drift
This article is the second of a two-part article on ASCE 7-16, Minimum Design Loads for Buildings and Other Structures, and its provisions for lateral drift determination. The first article (STRUCTURE, July 2019) discussed main points influencing seismic drift computation. In this article, the effect of soil flexibility and cracking of reinforced concrete elements on seismic drift computation of structural systems is addressed. It also discusses the determination of the level of loads for checking wind drift, return periods of wind speed maps, and allowable wind drift limits. A brief comparison between seismic drift and wind drift, in connection to their nature, and a determination procedure is covered. …
