Timber-only Structures & Architecture - Exploring the Potential of Using Salvaged Timber and Wooden Nails

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorRuan, Gengmu
dc.contributor.departmentRakennustekniikan laitosfi
dc.contributor.departmentDepartment of Civil Engineeringen
dc.contributor.schoolInsinööritieteiden korkeakoulufi
dc.contributor.schoolSchool of Engineeringen
dc.contributor.supervisorFink, Gerhard, Assoc. Prof., Aalto University, Department of Civil Engineering, Finland; Filz Günther H., Prof., Universität Innsbruck, Austria
dc.date.accessioned2024-03-20T10:00:25Z
dc.date.available2024-03-20T10:00:25Z
dc.date.defence2024-04-03
dc.date.issued2024
dc.description.abstractIn light of the serious environmental challenges, it is urgent to ease the current dramatic increase of CO2 emissions. The building sector, as one of the major contributors to global CO2 emissions, is on the move to a more conscious and environmentally compatible thinking. The use of natural resources, short transport, low processing of raw material, and prolonging life cycles of existing building components, are some of the keywords in this context. In this thesis, a concept of timber-only structures and architecture was proposed to explore possible sustainable solutions for future building construction. Specifically, salvaged timber and wooden nails were used as the only material and connector for building structures. This research consists of three main research phases: The first phase was initiated by a pedestrian trail project, which searched for a more cost-efficient and more sustainable solution to replace the traditional trail-making in Finland. The solution was mainly based on two individual parts – (i) an investigation on the wooden nails in terms of usage, nailing arrangements, and structural behavior, and (ii) an investigation on salvaged timber in terms of availability, planar arrangements, and resulting patterns. The outputs from the individual investigations were merged in the trail design, where full-scale prototypes were built up and an exhibition was performed. The second phase rethought the design process of the trail. A systematic review of integrated design concepts was conducted. Inspired by the review, a concept of using feedback loops was proposed to reinterpret the design process of the trail. This feeding-back process also informed a more complex structure to be studied in the following phase. In the third phase, a planar rectangular slide-in reciprocal frame (RF) system was proposed. A systematic investigation was carried out regarding structural performance, assembly logic, possible layouts, and resulting architectural spaces. As a showcase, a canopy was designed and built by applying the outputs from the investigation, and then exhibited to the public. According to the overall process of the exploration using salvaged timber and wooden nails, the concept of timber-only structures and architecture showed its potential in various aspects: (i) wooden nails can provide sufficient load-bearing capacity for structural applications, at least for less-loaded structures or structures with low safety requirements; (ii) salvaged timber brings both structural and aesthetic values for new constructions; (iii) using feedback loops to interpret the building design process can bring more holistic solutions compared to the traditional linear design approach; and (iv) the planar rectangular slide-in RF system brings unique architectural features and structural benefits, but they are associated with large deformations and a brittle failure mode in terms of structural behaviour.en
dc.format.extent67 + app. 63
dc.format.mimetypeapplication/pdfen
dc.identifier.isbn978-952-64-1693-9 (electronic)
dc.identifier.isbn978-952-64-1692-2 (printed)
dc.identifier.issn1799-4942 (electronic)
dc.identifier.issn1799-4934 (printed)
dc.identifier.issn1799-4934 (ISSN-L)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/127248
dc.identifier.urnURN:ISBN:978-952-64-1693-9
dc.language.isoenen
dc.opnWeinand, Yves Assoc. Prof., École Polytechnique Fédérale de Lausanne, Switzerland
dc.publisherAalto Universityen
dc.publisherAalto-yliopistofi
dc.relation.haspart[Publication 1]: Gengmu Ruan, Günther H. Filz, and Gerhard Fink. Shear capacity of timber-totimber connections using wooden nails. Wood Material Science and Engineering, 17, 1, 20-29, January 2022. DOI: 10.1080/17480272.2021.1964595
dc.relation.haspart[Publication 2]: Gengmu Ruan, Günther H. Filz, and Gerhard Fink. An integrated architectural and structural design concept by using local, salvaged timber. Proceedings of the IASS Annual Symposium 2020/21 and the 7th International Conference on Spatial Structures: Inspiring the Next Generation, Guilford, UK, 536-545, September 2021. Full text in Acris/Aaltodoc: https://urn.fi/URN:NBN:fi:aalto-2021112410391.
dc.relation.haspart[Publication 3]: Gengmu Ruan, Günther H. Filz, and Gerhard Fink. Master builders revisited – The importance of feedback loops: a case study using salvaged timber and wooden nails only. Architectural Research in Finland, 6, 1, 227–246, May 2023. Full text in Acris/Aaltodoc: https://urn.fi/URN:NBN:fi:aalto-202306053600. DOI: 10.37457/arf.130451
dc.relation.haspart[Publication 4]: Gengmu Ruan, Günther H. Filz, and Gerhard Fink. Planar rectangular slide-in reciprocal frame system using salvaged timber and wooden nails. Journal of the International Association for Shell and Spatial Structures, 65, 2, available online ahead of print, January 2024. DOI: 10.20898/j.iass.2023.019
dc.relation.ispartofseriesAalto University publication series DOCTORAL THESESen
dc.relation.ispartofseries42/2024
dc.revWeinand, Yves, Assoc. Prof., École Polytechnique Fédérale de Lausanne, Switzerland
dc.revRiggio, Mariapaola, Assoc. Prof., Oregon State University, USA
dc.subject.keywordtimber-onlyen
dc.subject.keywordstructures and architectureen
dc.subject.keywordsalvaged timberen
dc.subject.keywordwooden nailsen
dc.subject.keywordsustainabilityen
dc.subject.keywordintegrated designen
dc.subject.keywordfeedback loopsen
dc.subject.keywordpedestrian trailen
dc.subject.keywordslide-in systemen
dc.subject.keywordanalytical modelen
dc.subject.otherCivil engineeringen
dc.titleTimber-only Structures & Architecture - Exploring the Potential of Using Salvaged Timber and Wooden Nailsen
dc.typeG5 Artikkeliväitöskirjafi
dc.type.dcmitypetexten
dc.type.ontasotDoctoral dissertation (article-based)en
dc.type.ontasotVäitöskirja (artikkeli)fi
local.aalto.acrisexportstatuschecked 2024-05-13_1510
local.aalto.archiveyes
local.aalto.formfolder2024_03_20_klo_07_26
local.aalto.infraAalto Studios
local.aalto.infraARTS Workshops
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