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Simplified environmental analysis of the long-term performance of wood cladding and decking

Niklewski, Jonas LU ; Sandak, Jakub ; van Niekerk, Philip Bester ; Brischke, Christian ; Acquah, Richard and Sandak, Anna (2023) 13th World Conference on Timber Engineering: Timber for a Livable Future, WCTE 2023 In 13th World Conference on Timber Engineering, WCTE 2023 1. p.549-557
Abstract

The performance of timber in exposed environments is affected by several biotic and abiotic factors. For timber cladding and decking, two important aspects include reduced structural performance due to fungal decay and aesthetical changes resulting from superficial effects such as photodegradation and moulds. Predicting the long-term performance of timber is important because it enables rational material (species and treatment) and design (detailing) choices and reduce the risks of unexpected repairs and premature replacement of timber products. In this paper, we use available data on material performance in conjunction with environmental analysis to model, in a simplified way, (1) the time until onset of fungal decay and (2) the... (More)

The performance of timber in exposed environments is affected by several biotic and abiotic factors. For timber cladding and decking, two important aspects include reduced structural performance due to fungal decay and aesthetical changes resulting from superficial effects such as photodegradation and moulds. Predicting the long-term performance of timber is important because it enables rational material (species and treatment) and design (detailing) choices and reduce the risks of unexpected repairs and premature replacement of timber products. In this paper, we use available data on material performance in conjunction with environmental analysis to model, in a simplified way, (1) the time until onset of fungal decay and (2) the long-term aesthetical appearance of timber facades and decking. The results demonstrate how the analysis canbe used on a detailed geometry where wooden boards were modelled as separate objects and the choice of material affects the outcome. Several steps needing further development were identified, including a dose model linking microclimate to colour change and a better model for predicting moisture content. The study is part of a long-term effort to make holistic performance-based assessment of wood available for public use through easy-to-use procedures and accessible open-source software.

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Please use this url to cite or link to this publication:
author
; ; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Aesthetics, Durability, Fungal decay, Long-term performance, Material database, Wood
host publication
13th World Conference on Timber Engineering, WCTE 2023
series title
13th World Conference on Timber Engineering, WCTE 2023
editor
Nyrud, A. Q. and Malo, K.A.
volume
1
pages
9 pages
publisher
World Conference on Timber Engineering (WCTE)
conference name
13th World Conference on Timber Engineering: Timber for a Livable Future, WCTE 2023
conference location
Oslo, Norway
conference dates
2023-06-19 - 2023-06-22
external identifiers
  • scopus:85168881830
ISBN
9781713873273
9781713873297
DOI
10.52202/069179-0075
language
English
LU publication?
yes
id
516a3e29-9506-466f-a7cf-8873dbf19dc7
date added to LUP
2023-08-15 15:47:31
date last changed
2024-06-14 05:54:04
@inproceedings{516a3e29-9506-466f-a7cf-8873dbf19dc7,
  abstract     = {{<p>The performance of timber in exposed environments is affected by several biotic and abiotic factors. For timber cladding and decking, two important aspects include reduced structural performance due to fungal decay and aesthetical changes resulting from superficial effects such as photodegradation and moulds. Predicting the long-term performance of timber is important because it enables rational material (species and treatment) and design (detailing) choices and reduce the risks of unexpected repairs and premature replacement of timber products. In this paper, we use available data on material performance in conjunction with environmental analysis to model, in a simplified way, (1) the time until onset of fungal decay and (2) the long-term aesthetical appearance of timber facades and decking. The results demonstrate how the analysis canbe used on a detailed geometry where wooden boards were modelled as separate objects and the choice of material affects the outcome. Several steps needing further development were identified, including a dose model linking microclimate to colour change and a better model for predicting moisture content. The study is part of a long-term effort to make holistic performance-based assessment of wood available for public use through easy-to-use procedures and accessible open-source software.</p>}},
  author       = {{Niklewski, Jonas and Sandak, Jakub and van Niekerk, Philip Bester and Brischke, Christian and Acquah, Richard and Sandak, Anna}},
  booktitle    = {{13th World Conference on Timber Engineering, WCTE 2023}},
  editor       = {{Nyrud, A. Q. and Malo, K.A.}},
  isbn         = {{9781713873273}},
  keywords     = {{Aesthetics; Durability; Fungal decay; Long-term performance; Material database; Wood}},
  language     = {{eng}},
  pages        = {{549--557}},
  publisher    = {{World Conference on Timber Engineering (WCTE)}},
  series       = {{13th World Conference on Timber Engineering, WCTE 2023}},
  title        = {{Simplified environmental analysis of the long-term performance of wood cladding and decking}},
  url          = {{http://dx.doi.org/10.52202/069179-0075}},
  doi          = {{10.52202/069179-0075}},
  volume       = {{1}},
  year         = {{2023}},
}