Cost and Performance of Guyed Lattice Structures vs. Self-Supporting Towers

Based on experience with four large lattice tower projects in the United States during the past five years, the authors have assessed the potential cost savings and performance of guyed lattice structures in comparison with self-supporting alternatives. Three projects used guyed vee structures as tangents, and the fourth used a guyed delta structure (a “banjo”). Guyed lattice masts as deadend structures were also used. This paper presents a general description of guyed lattice structures and evaluates cost savings related to steel, foundations, assembly, and erection. Two projects allowed a direct comparison between guyed vee and self-supporting tangent towers, owing to identical structural loading criteria. The other two projects had very similar criteria and can corroborate the information provided by the prior two. Aspects of the performance of guyed structures are also examined. Findings are summarized in table form.