![Dr Lisa Ottenhaus](/sites/default/files/profiles/24484.jpeg)
Overview
Background
Dr Lisa Ottenhaus is a structural engineer and senior lecturer, with expertise in design of timber connections. Lisa's research interests encompass the theory, analysis, design and performance of timber connections, including detailing for timber durability. Lisa and their team research offsite timber construction using both engineered wood products and light timber framing, design for adaptability, disassembly and reuse, and reversible timber joints.
Lisa holds a PhD from the University of Canterbury, Aotearoa New Zealand, on the seismic performance of connections in tall timber buildings, a Masters of Science in structural engineering from Delft University of Technology, and a Bachelor of Science from Karlsruhe Institute of Technology.
As part of the ARC Advance Timber Hub, Lisa co-leads Node 3 on Extending Building Life, and project 1.2 on timber connections. Lisa is a steering committee member of WG1 a COST Action Helen (Holistic Design of Taller Timber Buildings), and a founding member of the International Association for Mass Timber Construction.
Lisa is a committee member of TM-010 (Australian Standards technical committee on Timber Structures and Framing), and a steering committee member of the Australian Timber Construction Educator Network.
Lisa has been an invited speaker at the prefabAUS Offsite conference, the Brisbane Architecture and Design Festival, the International Holzbau Forum (Innsbruck, Austria) and has been interviewed by the Guardian, ABC Radio, Built Offsite, and the Holzmagazin.
Availability
- Dr Lisa Ottenhaus is:
- Available for supervision
- Media expert
Fields of research
Qualifications
- Bachelor of Civil Engineering, Karlsruhe Institute of Technology
- Masters (Coursework) of Civil Engineering, Delft University of Technology
- Doctor of Philosophy, University of Canterbury
- Journal Editorial Board Member, Australian Journal of Civil Engineering, Australian Journal of Civil Engineering
- Journal Editorial Board Member, Construction and Building Materials, Construction and Building Materials
- Member, Standards Australia Technical Committee TM010, Standards Australia Technical Committee TM010
Research interests
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Structural timber engineering
Connection design, durability of timber connections, timber design standards, reversible connections, capacity design, connections for modular timber buildings, connections in engineered wood products. PhD and MPhil applicants please refer to Available Projects.
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Modular and offsite construction of timber buildings
Design for disassembly, adaptable and flexible building design, modular and offsite construction, design for circular economy, structural performance of reclaimed timber, design for repair and reuse. PhD and MPhil applicants please refer to Available Projects.
Works
Search Professor Lisa Ottenhaus’s works on UQ eSpace
Featured
2022
Other Outputs
Tall timber buildings are exciting, but to shrink construction’s carbon footprint we need to focus on the less sexy ‘middle’
Ottenhaus, Lisa (2022, 08 15). Tall timber buildings are exciting, but to shrink construction’s carbon footprint we need to focus on the less sexy ‘middle’ The Conversation
Featured
2020
Journal Article
Analytical derivation and experimental verification of overstrength factors of dowel-type timber connections for capacity design
Ottenhaus, Lisa-Mareike, Li, Minghao and Smith, Tobias (2020). Analytical derivation and experimental verification of overstrength factors of dowel-type timber connections for capacity design. Journal of Earthquake Engineering, 26 (6), 1-15. doi: 10.1080/13632469.2020.1781711
2023
Journal Article
Influence of wet-dry cycles on the withdrawal capacity and corrosion of zinc electroplated self-tapping screws in CCA-treated and untreated Southern pine
Yan, Zidi, Ottenhaus, Lisa-Mareike, Yermán, Luis and Scheibenreiter, Johann (2023). Influence of wet-dry cycles on the withdrawal capacity and corrosion of zinc electroplated self-tapping screws in CCA-treated and untreated Southern pine. Case Studies in Construction Materials, 19 e02429, e02429. doi: 10.1016/j.cscm.2023.e02429
2023
Conference Publication
Rückbaubare Verbindungen für den Ingenieurholzbau
Ottenhaus, Lisa (2023). Rückbaubare Verbindungen für den Ingenieurholzbau. Internationales Holzbau Forum, Innsbruck, Austria, 29 November-2 December 2023.
2023
Journal Article
Effect of wetting and fungal degradation on the withdrawal capacity of stainless-steel screws in radiata pine
Yermán, Luis, Vargas, Juan and Ottenhaus, Lisa-Mareike (2023). Effect of wetting and fungal degradation on the withdrawal capacity of stainless-steel screws in radiata pine. European Journal of Wood and Wood Products, 82 (1), 15-22. doi: 10.1007/s00107-023-01988-7
2023
Journal Article
Design for adaptability, disassembly and reuse – a review of reversible timber connection systems
Ottenhaus, Lisa-Mareike, Yan, Zidi, Brandner, Reinhard, Leardini, Paola, Fink, Gerhard and Jockwer, Robert (2023). Design for adaptability, disassembly and reuse – a review of reversible timber connection systems. Construction and Building Materials, 400 132823, 1-16. doi: 10.1016/j.conbuildmat.2023.132823
2023
Journal Article
A parametric design framework for timber framing span tables
Jiang, Jian, Ottenhaus, Lisa-Mareike and Gattas, Joseph M. (2023). A parametric design framework for timber framing span tables. Australian Journal of Civil Engineering. doi: 10.1080/14488353.2023.2227432
2023
Other Outputs
Timber wall frame span table datasets
Jiang, Jian, Gattas, Joe and Ottenhaus, Lisa (2023). Timber wall frame span table datasets. The University of Queensland. (Dataset) doi: 10.48610/64163b4
2023
Conference Publication
Towards adaptability and circularity of timber buildings
Jockwer, Robert, Öberg, Vera, Ottenhaus, Lisa-Mareike, Leardini, Paola and Goto, Yutaka (2023). Towards adaptability and circularity of timber buildings. 13th World Conference on Timber Engineering: Timber for a Livable Future, WCTE 2023, Oslo, Norway, 19-22 June 2023. As, Norway: World Conference on Timber Engineering. doi: 10.52202/069179-0203
2023
Conference Publication
The impacts of screw tip, inclination angles, and number of penetration layers on screw withdrawal capacity of Australian machine graded pine
Yan, Zidi, Ottenhaus, Lisa-Mareike, Lin, Jingyuan, Jockwer, Robert and Ringhofer, Andreas (2023). The impacts of screw tip, inclination angles, and number of penetration layers on screw withdrawal capacity of Australian machine graded pine. World Conference on Timber Engineering (WCTE), Oslo, Norway, 17-21 June 2023. As, Norway: World Conference on Timber Engineering (WCTE). doi: 10.52202/069179-0185
2023
Conference Publication
Effect of moisture cycles and LOSP treatment on screwed timber connections
Yermán, Luis, Abudi, Mal, Yan, Zidi and Ottenhaus, Lisa-Mareike (2023). Effect of moisture cycles and LOSP treatment on screwed timber connections. IUFRO Div 5 2023, Cairns, QLD, Australia, 4-8 June 2023.
2023
Conference Publication
Impact of moisture cycling on screw withdrawal capacity of treated and untreated radiata pine
Yermán, Luis, Yan, Zidi, Feng, Wen and Ottenhaus, Lisa-Mareike (2023). Impact of moisture cycling on screw withdrawal capacity of treated and untreated radiata pine. World Conference on Timber Engineering (WCTE 2023), Oslo, Norway, 19-22 June 2023. Ås, Norway: World Conference on Timber Engineering (WCTE 2023). doi: 10.52202/069179-0164
2022
Journal Article
Performance of reversible timber connections in Australian light timber framed panelised construction
Yan, Zidi, Ottenhaus, Lisa-Mareike, Leardini, Paola and Jockwer, Robert (2022). Performance of reversible timber connections in Australian light timber framed panelised construction. Journal of Building Engineering, 61 105244, 1-16. doi: 10.1016/j.jobe.2022.105244
2022
Journal Article
Effect of wetting and fungal degradation on performance of nailed timber connections
Yermán, Luis, Zhang, Yuhao, He, Jiangwan, Xiao, Martin, Ottenhaus, Lisa-Mareike and Morrell, Jeffrey J. (2022). Effect of wetting and fungal degradation on performance of nailed timber connections. Construction and Building Materials, 353 129113, 129113. doi: 10.1016/j.conbuildmat.2022.129113
2022
Journal Article
Human factors affecting ventilation in Australian classrooms during the COVID-19 pandemic: Toward insourcing occupants' proficiency in ventilation management
Snow, Stephen, Danam, Royce, Leardini, Paola, Glencross, Mashhuda, Beeson, Brett, Ottenhaus, Lisa-Mareike and Boden, Marie (2022). Human factors affecting ventilation in Australian classrooms during the COVID-19 pandemic: Toward insourcing occupants' proficiency in ventilation management. Frontiers in Computer Science, 4 888688. doi: 10.3389/fcomp.2022.888688
2022
Journal Article
Half hole and full hole dowel embedment Strength: A review of international developments and recommendations for Australian softwoods
Ottenhaus, Lisa-Mareike, Li, Zancong and Crews, Keith (2022). Half hole and full hole dowel embedment Strength: A review of international developments and recommendations for Australian softwoods. Construction and Building Materials, 344 128130, 1-16. doi: 10.1016/j.conbuildmat.2022.128130
2022
Conference Publication
Effect of repeated wetting and drying on withdrawal capacity and corrosion of european screws in treated and untreated australian sawn timber
Yan, Zidi, Ottenhaus, Lisa-Mareike and Yermán, Luis (2022). Effect of repeated wetting and drying on withdrawal capacity and corrosion of european screws in treated and untreated australian sawn timber. Society of Wood Science and Technology (SWST), Kingscliff, NSW Australia, 10-15 July 2022. Society of Wood Science and Technology.
2022
Conference Publication
Effect of wood decay at early stages on screw withdrawal capacity
Yermán, Luis, Qiao, Yankang, Vargas, Juan and Ottenhaus, Lisa-Mareike (2022). Effect of wood decay at early stages on screw withdrawal capacity. SWST 2022, Kingscliff, NSW, Australia, 10-15 July 2022.
2021
Journal Article
Effect of thermal modification of slash pine with linseed oil on water repellency and performance of mechanical connections
Yermán, Luis, Ottenhaus, Lisa-Mareike, Zhang, Yuhao and Morrell, Jeffrey J. (2021). Effect of thermal modification of slash pine with linseed oil on water repellency and performance of mechanical connections. Construction and Building Materials, 305 124776, 124776. doi: 10.1016/j.conbuildmat.2021.124776
2021
Journal Article
Designing timber connections for ductility – a review and discussion
Ottenhaus, Lisa-Mareike, Jockwer, Robert, van Drimmelen, David and Crews, Keith (2021). Designing timber connections for ductility – a review and discussion. Construction and Building Materials, 304 124621. doi: 10.1016/j.conbuildmat.2021.124621
Supervision
Availability
- Dr Lisa Ottenhaus is:
- Available for supervision
Before you email them, read our advice on how to contact a supervisor.
Available projects
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Research on timber connections
Fundamental research is needed to characterise basic system properties of Australian timber products to update the Australian timber design standard AS1720.1. The following research gaps may be addressed:
1) investigate embedment strength of dowel-type fasteners in different Australian timber species and products; derive reliable regression models for strength prediction; characterise the effect of moisture on embedment strength; establish conversion formulae to harmonise half hole and full hole embedment tests in sawn timber, LVL, and CLT;
2) study of screwed connections in Australian timber species and products including engineered wood products; determine screw withdrawal parameters and develop analytical models to quantify the effect of boundary conditions, spacings, compound angles and group effect; investigate suitable screw arrangements to reinforce carpentry joints;
3) other fundamental experimental research on timber connections may be considered.
Formal education or equivalent professional experience in structural timber engineering is a non-negotiable prerequisite to undertake this research. If you do not meet this requirement, your application will be declined. At a minimum, applicants should have completed an undergraduate course on the basics of structural timber engineering with distinction. Applicants with a degree in timber are preferred. Previous research experience is desirable (e.g. BHon or Master thesis research).
A research scholarship may become available in 2024/2025. Visit https://www.advance-timber-hub.org/opportunities/ for more information.
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Durability performance of timber connections in treated wood
Fundamental research is needed to understand the durability performance of timber connections in treated wood. This includes, but is not limited to, the behaviour of common fasteners such as nails, screws, and dowels in chemically treated timber, thermally modified timber and timber products, subjected to repeated wetting and drying, as well as fungal decay. A competitive scholarship needs to be obtained to undertake this work.
Supervision history
Current supervision
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Doctor Philosophy
Design and performance evaluation of reversible connections for modular adaptable timber buildings
Principal Advisor
Other advisors: Associate Professor Paola Leardini
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Doctor Philosophy
Investigation of engineered recycled hardwood and natural fibre composite products
Principal Advisor
Other advisors: Associate Professor Joe Gattas
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Doctor Philosophy
Offsite Timber Manufacture Potential for Incremental and Transformative Housing In Australia
Associate Advisor
Other advisors: Associate Professor Paola Leardini
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Doctor Philosophy
Effect of moisture content changeson the performance of timber connections
Associate Advisor
Other advisors: Dr Luis Yerman
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Doctor Philosophy
Timber Construction for Carbon Mitigation
Associate Advisor
Other advisors: Dr SangHyung Ahn
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Doctor Philosophy
Effects of decay on timber connections
Associate Advisor
Other advisors: Dr Luis Yerman
Completed supervision
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2024
Master Philosophy
Optimisation of timber selection in low-rise residential building wall frame construction
Associate Advisor
Other advisors: Associate Professor Joe Gattas
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2023
Doctor Philosophy
Moisture Safety for Energy-efficient CLT Envelopes: Pathways to Net-zero Operational Energy for Engineered Wood Multi-storey Buildings in Australian Tropical and Subtropical Climates
Associate Advisor
Other advisors: Dr Juan Hidalgo Medina, Associate Professor Paola Leardini
Media
Enquiries
Contact Dr Lisa Ottenhaus directly for media enquiries about:
- timber buildings
- timber education
- timber engineering
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