Tensile Strength of Ropes and Friction Hitch Used in Tree Climbing Work

Tree climbing techniques for arboriculture are becoming more and more popular, but like any work activity, there are risks for the operator. The PPE (personal protective equipment) and protective systems studied here include semi-static ropes and friction hitches. The work rope/friction hitch system...

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Autores principales:	Leonardo Bianchini, Rodolfo Picchio, Andrea Colantoni, Marco Scotolati, Valerio Di Stefano, Massimo Cecchini
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	urban forestry static load ropework knots safety Plant ecology QK900-989
Acceso en línea:	https://doaj.org/article/09fb26442444490e89da484a373a663f
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spelling	oai:doaj.org-article:09fb26442444490e89da484a373a663f2021-11-25T17:37:28ZTensile Strength of Ropes and Friction Hitch Used in Tree Climbing Work10.3390/f121114571999-4907https://doaj.org/article/09fb26442444490e89da484a373a663f2021-10-01T00:00:00Zhttps://www.mdpi.com/1999-4907/12/11/1457https://doaj.org/toc/1999-4907Tree climbing techniques for arboriculture are becoming more and more popular, but like any work activity, there are risks for the operator. The PPE (personal protective equipment) and protective systems studied here include semi-static ropes and friction hitches. The work rope/friction hitch system is a combination that many operators rely on, but unlike current mechanical rope clamps and descenders, they do not have European certifications. For this reason, tensile tests were carried out using a traction bench on rope/knot systems. Two rope models and two types of knots were used to stress the systems and materials as much as possible, so as to observe the resulting ratios. A total of 36 tests were carried out in which measurements were taken, including applied load in traction, knot creep, and rope diameter changes. Several results were obtained, including a maximum load of 18.7 kN, a maximum slip of 9.6 cm and a maximum diameter variation of 3 mm. This work represents a preliminary investigation for verifying the relationship between work ropes and friction knots. Relationships among the variables were observed; differences emerged mainly as a function of the type of knot used rather than the type of rope used. The data obtained is also important for applications towards improving preventative safety measures.Leonardo BianchiniRodolfo PicchioAndrea ColantoniMarco ScotolatiValerio Di StefanoMassimo CecchiniMDPI AGarticleurban forestrystatic loadropeworkknotssafetyPlant ecologyQK900-989ENForests, Vol 12, Iss 1457, p 1457 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	urban forestry static load ropework knots safety Plant ecology QK900-989
spellingShingle	urban forestry static load ropework knots safety Plant ecology QK900-989 Leonardo Bianchini Rodolfo Picchio Andrea Colantoni Marco Scotolati Valerio Di Stefano Massimo Cecchini Tensile Strength of Ropes and Friction Hitch Used in Tree Climbing Work
description	Tree climbing techniques for arboriculture are becoming more and more popular, but like any work activity, there are risks for the operator. The PPE (personal protective equipment) and protective systems studied here include semi-static ropes and friction hitches. The work rope/friction hitch system is a combination that many operators rely on, but unlike current mechanical rope clamps and descenders, they do not have European certifications. For this reason, tensile tests were carried out using a traction bench on rope/knot systems. Two rope models and two types of knots were used to stress the systems and materials as much as possible, so as to observe the resulting ratios. A total of 36 tests were carried out in which measurements were taken, including applied load in traction, knot creep, and rope diameter changes. Several results were obtained, including a maximum load of 18.7 kN, a maximum slip of 9.6 cm and a maximum diameter variation of 3 mm. This work represents a preliminary investigation for verifying the relationship between work ropes and friction knots. Relationships among the variables were observed; differences emerged mainly as a function of the type of knot used rather than the type of rope used. The data obtained is also important for applications towards improving preventative safety measures.
format	article
author	Leonardo Bianchini Rodolfo Picchio Andrea Colantoni Marco Scotolati Valerio Di Stefano Massimo Cecchini
author_facet	Leonardo Bianchini Rodolfo Picchio Andrea Colantoni Marco Scotolati Valerio Di Stefano Massimo Cecchini
author_sort	Leonardo Bianchini
title	Tensile Strength of Ropes and Friction Hitch Used in Tree Climbing Work
title_short	Tensile Strength of Ropes and Friction Hitch Used in Tree Climbing Work
title_full	Tensile Strength of Ropes and Friction Hitch Used in Tree Climbing Work
title_fullStr	Tensile Strength of Ropes and Friction Hitch Used in Tree Climbing Work
title_full_unstemmed	Tensile Strength of Ropes and Friction Hitch Used in Tree Climbing Work
title_sort	tensile strength of ropes and friction hitch used in tree climbing work
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/09fb26442444490e89da484a373a663f
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Tensile Strength of Ropes and Friction Hitch Used in Tree Climbing Work

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