'Gustiness in wind introduces dynamic loading effects on the system, which can be examined in terms of a gust loading factor. This second sentence is a bit confusing, and is clarified by another paragraph, earlier in section 2: Accordingly, for a very small size structure, the new gust factor reduces to nearly unity and further decreases due to the spatial averageing resulting from a lack of contemporaneous gust action.' in ASCD 7-95, the use of 3s gusts introduces a new twist, as the design wind already included the effects of gustiness. It is a bit unclear on some of the details, but the gist of the main point is in section 2 of the article. This article is about the 7-95 gust factor, but on reading it, you will see that it also matches the gust factor in ASCE 7-98.
For flexible structures, it is significant, and this results in a higher overall gust factor than for a rigid structure. For rigid structures, the dynamic response is insignificant. 663-672.īefore going on, understand that in ASCE 7-95 and 7-98, the gust factor is a combination of a gust load effect and a dynamic structural response. It is found in the Journal of Wind Engineering and Industrial Aerodynamics 77 & 78 (1998) pp. 'On the formulation f ASCE 7-95 gust effect factor' by Giovanni Solari and Ahsan Kareem. I researched it, and found the following article.
