Influence of Weathering on the Structural Performance of Sheathing-to-Timber Connections

Cowled, CJL; Slattery, TP; Crews, K; Brooke, H

Influence of Weathering on the Structural Performance of Sheathing-to-Timber Connections

Cowled, CJL Slattery, TP Crews, K

Brooke, H

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Publisher:: MDPI
Publication Type:: Journal Article
Citation:: Forests, 2023, 14, (4)
Issue Date:: 2023-04-01

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Field	Value	Language
dc.contributor.author	Cowled, CJL
dc.contributor.author	Slattery, TP
dc.contributor.author	Crews, K https://orcid.org/0000-0003-1450-1423
dc.contributor.author	Brooke, H
dc.date.accessioned	2024-04-28T04:28:07Z
dc.date.available	2024-04-28T04:28:07Z
dc.date.issued	2023-04-01
dc.identifier.citation	Forests, 2023, 14, (4)
dc.identifier.issn	1999-4907
dc.identifier.issn	1999-4907
dc.identifier.uri	http://hdl.handle.net/10453/178428
dc.description.abstract	The sheathing-to-timber connection (STC) is a critical component of timber-framed shear walls. The STC provides the shear wall system with its racking resistance, while anchors and tiedowns provide resistance to sliding and overturning, respectively. Because building materials are exposed to weathering during construction, this study aims to quantify the influence of weathering on the structural performance of STCs. To achieve this aim, a total of (Formula presented.) small-scale specimens were fabricated with 5 different sheathing types and 2 different timber species. Each specimen comprised 2 panels of sheathing connected to 2 short lengths of pine timber ((Formula presented.) cross-section), with a total of (Formula presented.) ((Formula presented.)) galvanised clouts at (Formula presented.) spacings. Some specimens were tested under the EN 594 monotonic loading protocol and others were tested under the ISO 16670 cyclic loading protocol. Some specimens were exposed to the weather for a period of 6 months before being tested, while others were stored in an air-conditioned environment before being tested. The results show that weathering reduces the ultimate and yield capacity of STC connections by (Formula presented.) and (Formula presented.) on average, respectively; however, this result is not statistically significant for most sheathing types. The results varied, with some configurations having an ultimate capacity up to (Formula presented.) higher and others having an ultimate capacity as much as (Formula presented.) lower for weathered specimens compared to unweathered specimens. However, weathering reduces the stiffness of STCs by (Formula presented.) and ductility by (Formula presented.) a statistically significant result. For most sheathing types, these findings do not support reductions to the design capacity of STCs that have been exposed to weathering.
dc.language	English
dc.publisher	MDPI
dc.relation.ispartof	Forests
dc.relation.isbasedon	10.3390/f14040734
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0602 Ecology, 0607 Plant Biology, 0705 Forestry Sciences
dc.subject.classification	3007 Forestry sciences
dc.subject.classification	3103 Ecology
dc.title	Influence of Weathering on the Structural Performance of Sheathing-to-Timber Connections
dc.type	Journal Article
utslib.citation.volume	14
utslib.for	0602 Ecology
utslib.for	0607 Plant Biology
utslib.for	0705 Forestry Sciences
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	open_access	*
dc.date.updated	2024-04-28T04:28:02Z
pubs.issue	4
pubs.publication-status	Published
pubs.volume	14
utslib.citation.issue	4

Abstract:

The sheathing-to-timber connection (STC) is a critical component of timber-framed shear walls. The STC provides the shear wall system with its racking resistance, while anchors and tiedowns provide resistance to sliding and overturning, respectively. Because building materials are exposed to weathering during construction, this study aims to quantify the influence of weathering on the structural performance of STCs. To achieve this aim, a total of (Formula presented.) small-scale specimens were fabricated with 5 different sheathing types and 2 different timber species. Each specimen comprised 2 panels of sheathing connected to 2 short lengths of pine timber ((Formula presented.) cross-section), with a total of (Formula presented.) ((Formula presented.)) galvanised clouts at (Formula presented.) spacings. Some specimens were tested under the EN 594 monotonic loading protocol and others were tested under the ISO 16670 cyclic loading protocol. Some specimens were exposed to the weather for a period of 6 months before being tested, while others were stored in an air-conditioned environment before being tested. The results show that weathering reduces the ultimate and yield capacity of STC connections by (Formula presented.) and (Formula presented.) on average, respectively; however, this result is not statistically significant for most sheathing types. The results varied, with some configurations having an ultimate capacity up to (Formula presented.) higher and others having an ultimate capacity as much as (Formula presented.) lower for weathered specimens compared to unweathered specimens. However, weathering reduces the stiffness of STCs by (Formula presented.) and ductility by (Formula presented.) a statistically significant result. For most sheathing types, these findings do not support reductions to the design capacity of STCs that have been exposed to weathering.

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