Effect of Chases with Renovation Techniques on the Load Carrying Capacity of Masonry Walls

Infrastructure through the masonry walls (for example, wiring and piping works) are usually installed using chases in different directions. Introducing these chases in a newly built wall will affect its overall load carrying capacity. However, there has thus far been very limited research into the e...

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Autores principales:	Adnan Al-Sibahy, Rodger Edwards
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	load carrying capacity chases in walls renovation of the wall chases Technology T
Acceso en línea:	https://doaj.org/article/86725de6f897474f845742dda25ccf72
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spelling	oai:doaj.org-article:86725de6f897474f845742dda25ccf722021-11-25T17:58:52ZEffect of Chases with Renovation Techniques on the Load Carrying Capacity of Masonry Walls10.3390/infrastructures61101602412-3811https://doaj.org/article/86725de6f897474f845742dda25ccf722021-11-01T00:00:00Zhttps://www.mdpi.com/2412-3811/6/11/160https://doaj.org/toc/2412-3811Infrastructure through the masonry walls (for example, wiring and piping works) are usually installed using chases in different directions. Introducing these chases in a newly built wall will affect its overall load carrying capacity. However, there has thus far been very limited research into the effects of chases on the response and load carrying capacity of walls. This study has been undertaken to evaluate the structural behaviour of new masonry walls having chases in both horizontal and vertical directions and subjected to compression load throughout an extensive experimental programme. In addition, two renovation techniques have been proposed to infill the chases created in small scale walls (wallettes). The first technique involved the use of plastic wire mesh and cement mortar, while the second incorporated using galvanized steel channel together with the plastic wire mesh and cement mortar. Furthermore, a reference case of wallette without chases has been considered to enable reasonable comparisons to check the effect of the chases and the efficiency of the proposed renovation techniques. The outcomes of this study were used to modify the design equations proposed in the relevant codes of practice. The obtained results showed a notable reduction in the load carrying capacity of the masonry wall due to the introduction of the chases with a reduction percentage of 29% compared to the masonry wall without chase. The percentage decrease depends on the depth of the chase and the inclination angle of the load flow. The walls with horizontal chases exhibited more reduction in the load carrying capacity compared to those with vertical chases. The adopted renovation techniques using galvanized steel channel and/or plastic wire mesh with cement mortar recovered 55% and 93% of the lost load carrying capacity due to the presence of the chase and the failure was due to the de-bonded phenomena of the infill materials. Suitable factors of safety have been proposed to be incorporated in the compressive strength and modulus of elasticity formulas of the masonry walls of the BS EN codes.Adnan Al-SibahyRodger EdwardsMDPI AGarticleload carrying capacitychases in wallsrenovation of the wall chasesTechnologyTENInfrastructures, Vol 6, Iss 160, p 160 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	load carrying capacity chases in walls renovation of the wall chases Technology T
spellingShingle	load carrying capacity chases in walls renovation of the wall chases Technology T Adnan Al-Sibahy Rodger Edwards Effect of Chases with Renovation Techniques on the Load Carrying Capacity of Masonry Walls
description	Infrastructure through the masonry walls (for example, wiring and piping works) are usually installed using chases in different directions. Introducing these chases in a newly built wall will affect its overall load carrying capacity. However, there has thus far been very limited research into the effects of chases on the response and load carrying capacity of walls. This study has been undertaken to evaluate the structural behaviour of new masonry walls having chases in both horizontal and vertical directions and subjected to compression load throughout an extensive experimental programme. In addition, two renovation techniques have been proposed to infill the chases created in small scale walls (wallettes). The first technique involved the use of plastic wire mesh and cement mortar, while the second incorporated using galvanized steel channel together with the plastic wire mesh and cement mortar. Furthermore, a reference case of wallette without chases has been considered to enable reasonable comparisons to check the effect of the chases and the efficiency of the proposed renovation techniques. The outcomes of this study were used to modify the design equations proposed in the relevant codes of practice. The obtained results showed a notable reduction in the load carrying capacity of the masonry wall due to the introduction of the chases with a reduction percentage of 29% compared to the masonry wall without chase. The percentage decrease depends on the depth of the chase and the inclination angle of the load flow. The walls with horizontal chases exhibited more reduction in the load carrying capacity compared to those with vertical chases. The adopted renovation techniques using galvanized steel channel and/or plastic wire mesh with cement mortar recovered 55% and 93% of the lost load carrying capacity due to the presence of the chase and the failure was due to the de-bonded phenomena of the infill materials. Suitable factors of safety have been proposed to be incorporated in the compressive strength and modulus of elasticity formulas of the masonry walls of the BS EN codes.
format	article
author	Adnan Al-Sibahy Rodger Edwards
author_facet	Adnan Al-Sibahy Rodger Edwards
author_sort	Adnan Al-Sibahy
title	Effect of Chases with Renovation Techniques on the Load Carrying Capacity of Masonry Walls
title_short	Effect of Chases with Renovation Techniques on the Load Carrying Capacity of Masonry Walls
title_full	Effect of Chases with Renovation Techniques on the Load Carrying Capacity of Masonry Walls
title_fullStr	Effect of Chases with Renovation Techniques on the Load Carrying Capacity of Masonry Walls
title_full_unstemmed	Effect of Chases with Renovation Techniques on the Load Carrying Capacity of Masonry Walls
title_sort	effect of chases with renovation techniques on the load carrying capacity of masonry walls
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/86725de6f897474f845742dda25ccf72
work_keys_str_mv	AT adnanalsibahy effectofchaseswithrenovationtechniquesontheloadcarryingcapacityofmasonrywalls AT rodgeredwards effectofchaseswithrenovationtechniquesontheloadcarryingcapacityofmasonrywalls
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Effect of Chases with Renovation Techniques on the Load Carrying Capacity of Masonry Walls

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