Dynamic wind loading of trussed towers: proposed new supplementary material to the NSCP-2001

by Ronwaldo Emmanuel R. Aquino, Benito M. Pacheco, and Fernando J. Germar, 2006, Proceedings of the PICE National Convention, Iloilo City, Philippines, Philippine Institute of Civil Engineering (PICE).


ABSTRACT: Trussed towers in the Philippines typically have aspect ratios greater than 4, and by NSCP-2001 requirements, a flexible-structure GEF should be “obtained by a rational analysis that incorporates the dynamic properties of the structure.” However, this is not the current practice in the Philippines. Arguments are herein presented against the use of the NSCP-2001 rigid-structure GEF for these trussed towers in the Philippines. Proposed new supplementary material to the NSCP-2001 based on recent work by the first author is then discussed and presented.

KEYWORDS: wind loading, dynamic response, gust effect factor, trussed towers, NSCP