Half hole and full hole dowel embedment Strength: A review of international developments and recommendations for Australian softwoods

Ottenhaus, LM; Li, Z; Crews, K

Half hole and full hole dowel embedment Strength: A review of international developments and recommendations for Australian softwoods

Ottenhaus, LM Li, Z Crews, K

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Construction and Building Materials, 2022, 344, pp. 128130
Issue Date:: 2022-08-15

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Field	Value	Language
dc.contributor.author	Ottenhaus, LM
dc.contributor.author	Li, Z
dc.contributor.author	Crews, K https://orcid.org/0000-0003-1450-1423
dc.date.accessioned	2023-04-11T05:32:03Z
dc.date.available	2023-04-11T05:32:03Z
dc.date.issued	2022-08-15
dc.identifier.citation	Construction and Building Materials, 2022, 344, pp. 128130
dc.identifier.issn	0950-0618
dc.identifier.uri	http://hdl.handle.net/10453/169600
dc.description.abstract	Embedment strength is an essential system property of the European Yield Model which is commonly used to predict the ductile capacity of timber joints using dowel-type fasteners. This paper presents a comprehensive review of international embedment test methods and prediction formulae in design codes and literature, as well as an experimental study to evaluate the impact of different test methods parallel to the grain. A total of 224 full hole (FH) tension and half hole (HH) compression tests were conducted according to AS/NZS ISO 10984.2 on Australian sawn softwoods (Radiata Pine and Southern Pine) to compare embedment strength resulting from FH specimens sized to EN 383 and HH specimens sized to ASTM D5764, respectively. The results were compared to dowel embedment strength formulae from literature, those contained in Eurocode 5, the National Design Specification (NDS) for Wood Construction, and the respective joint group strength values contained in AS 1720.1, which are based on empirical test data. It was found that all strength prediction models were non-conservative except for a formula proposed by Smith et al. in 2004, which was based on FH tension tests in Australian Radiata Pine and Slash Pine. Furthermore, a strong correlation between timber density and embedment strength was found for both test methods, however, only FH tests displayed a correlation between dowel diameter and embedment strength, which is consistent with the embedment strengths formulae currently contained in Eurocode 5 and the NDS.
dc.language	en
dc.publisher	Elsevier
dc.relation.ispartof	Construction and Building Materials
dc.relation.isbasedon	10.1016/j.conbuildmat.2022.128130
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 1202 Building
dc.subject.classification	Building & Construction
dc.title	Half hole and full hole dowel embedment Strength: A review of international developments and recommendations for Australian softwoods
dc.type	Journal Article
utslib.citation.volume	344
utslib.for	0905 Civil Engineering
utslib.for	1202 Building
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	closed_access	*
dc.date.updated	2023-04-11T05:32:02Z
pubs.publication-status	Published
pubs.volume	344

Abstract:

Embedment strength is an essential system property of the European Yield Model which is commonly used to predict the ductile capacity of timber joints using dowel-type fasteners. This paper presents a comprehensive review of international embedment test methods and prediction formulae in design codes and literature, as well as an experimental study to evaluate the impact of different test methods parallel to the grain. A total of 224 full hole (FH) tension and half hole (HH) compression tests were conducted according to AS/NZS ISO 10984.2 on Australian sawn softwoods (Radiata Pine and Southern Pine) to compare embedment strength resulting from FH specimens sized to EN 383 and HH specimens sized to ASTM D5764, respectively. The results were compared to dowel embedment strength formulae from literature, those contained in Eurocode 5, the National Design Specification (NDS) for Wood Construction, and the respective joint group strength values contained in AS 1720.1, which are based on empirical test data. It was found that all strength prediction models were non-conservative except for a formula proposed by Smith et al. in 2004, which was based on FH tension tests in Australian Radiata Pine and Slash Pine. Furthermore, a strong correlation between timber density and embedment strength was found for both test methods, however, only FH tests displayed a correlation between dowel diameter and embedment strength, which is consistent with the embedment strengths formulae currently contained in Eurocode 5 and the NDS.

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http://hdl.handle.net/10453/169600