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Arboriculture & Urban Forestry Online
Volume 37, Issue 2 — March 2011
https://www.isa-arbor.com/Publications/Arboriculture-Urban-Forestry

Dead-end Stop Terminated Tree Support Cable Systems    (View PDF)

E. Thomas Smiley

Abstract: Supplemental support systems are used to reduce the risk of failure of codominant stems. The goal of this study was to evaluate dead-end stop terminated cables used in trees and to compare the strength of small tree cable systems. Field evaluations comparing eyebolt and Wire Stop® anchored cables found an enlargement of the hole through the branch in 39% of the Wire Stop terminations with a mean size of 6 mm. Static break tests found that the strength of cable system varied with the strength of the wood and system configuration. From a system strength perspective in oak: bent eye screw lags < welded eye screw lag = single swage stop = single swage stop with washer < double swage stop with washer = eyebolt. In pine, bent eye screw lags = welded eye screw lag = single swage stop < single swage stop with washer < double swage stop with washer = double swage stop with fender washer < eyebolt.

Keywords: Codominant Stems; Eyebolts; Ferrule; Guys; Junction Failures; Lags; Support Cable; Swage Stops; Tree Failures; Tree Support System; V-crotch; and Wedge

https://doi.org/10.48044/jauf.2011.010


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