Predicting service life of timber structures - Revision history

Editor at 13:01, 11 December 2020

2020-12-11T13:01:32Z

← Older revision		Revision as of 13:01, 11 December 2020
Line 2:		Line 2:
	\| [[File:TimberImage.jpg\|link=File:TimberImage.jpg]]		\| [[File:TimberImage.jpg\|link=File:TimberImage.jpg]]
	\|-		\|-
−	\| The image above shows the method currently used by the prototype ~~ClickDesign~~ tool, where the wood texture is rendered from a 3D model and projected onto a wooden cladding, whereafter the end user can change the degree of weathering to explore how the visual appearance of the wall will change over time.	+	\| The image above shows the method currently used by the prototype [https://www.bregroup.com/services/research/clickdesign/ CLICKDesign] tool, where the wood texture is rendered from a 3D model and projected onto a wooden cladding, whereafter the end user can change the degree of weathering to explore how the visual appearance of the wall will change over time.
	\|}		\|}

Line 19:		Line 19:
	= From research to practice =		= From research to practice =

−	The ~~ClickDesign~~ project aims at developing a tool to predict service life for timber elements and structures. The general objective of WP6 is to bridge the gap between research and practice. In short, WP6 receives input from other WPs (which are specialized on specific limit states) and puts it into an easy-to-use format, i.e. delivering fingertip knowledge to enable service life specification of wood to the end-user.	+	The CLICKDesign project aims at developing a tool to predict service life for timber elements and structures. The general objective of WP6 is to bridge the gap between research and practice. In short, WP6 receives input from other WPs (which are specialized on specific limit states) and puts it into an easy-to-use format, i.e. delivering fingertip knowledge to enable service life specification of wood to the end-user.

	By having a WP dedicated to parsing and putting research output into context, the goal is to increase the project’s impact and value creation to the end user. The end user is anyone who is interested in the long-term performance of wood but unable to read scientific papers and parse the raw data.		By having a WP dedicated to parsing and putting research output into context, the goal is to increase the project’s impact and value creation to the end user. The end user is anyone who is interested in the long-term performance of wood but unable to read scientific papers and parse the raw data.
Line 27:		Line 27:
	Sometimes, scientific models are simply not convenient to use. For example, we can model the biological degradation of a specific joint in a timber deck made of spruce sapwood using a variety of complex moisture transport models and decay prediction models. However, most end users are not familiar with such models, nor do they have time to wait for hours to get the results.		Sometimes, scientific models are simply not convenient to use. For example, we can model the biological degradation of a specific joint in a timber deck made of spruce sapwood using a variety of complex moisture transport models and decay prediction models. However, most end users are not familiar with such models, nor do they have time to wait for hours to get the results.

−	Other times, the research output needs context. For example, we can predict how the colour of a wooden board changes over time due to superficial photo-degradation, but the end user is left wondering how this will affect their deck or house. Similarly, we can predict how quickly termites degrade various wood species, but the end-user is perhaps more interested in how they can stop termites from getting into their house in the first place.	+	Other times, the research output needs context. For example, we can predict how the colour of a wooden board changes over time due to superficial photo-degradation, but the end user is left wondering how this will affect their deck or house. Similarly, we can predict how quickly termites degrade various wood species, but the end user is perhaps more interested in how they can stop termites from getting into their house in the first place.

	Context is key in bridging the divide between research and end user. We can remove the need for complex models by delivering pre-calculated scenarios and decay maps, we can provide tools to simulate the aesthetical changes of wood structures and we can work towards providing more general guidelines and recommendations to home owners in termite-risk zones.		Context is key in bridging the divide between research and end user. We can remove the need for complex models by delivering pre-calculated scenarios and decay maps, we can provide tools to simulate the aesthetical changes of wood structures and we can work towards providing more general guidelines and recommendations to home owners in termite-risk zones.
Line 44:		Line 44:
	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

		+	* Aesthetics and performance.
	* BRE articles on Designing Buildings Wiki.		* BRE articles on Designing Buildings Wiki.
	* Decking.		* Decking.
Line 51:		Line 52:
	* The use of timber in construction.		* The use of timber in construction.
	* Timber vs wood.		* Timber vs wood.
		+
		+	= External resources =
		+
		+	* BRE, [https://www.bregroup.com/services/research/clickdesign/ CLICKDesign].

	[[Category:DCN_Product_Knowledge]] [[Category:DCN_Research,_Development_and_Innovation]] [[Category:Research_/_Innovation]] [[Category:Products_/_components]]		[[Category:DCN_Product_Knowledge]] [[Category:DCN_Research,_Development_and_Innovation]] [[Category:Research_/_Innovation]] [[Category:Products_/_components]]

Editor at 12:54, 11 December 2020

2020-12-11T12:54:46Z

← Older revision		Revision as of 12:54, 11 December 2020
Line 21:		Line 21:
	The ClickDesign project aims at developing a tool to predict service life for timber elements and structures. The general objective of WP6 is to bridge the gap between research and practice. In short, WP6 receives input from other WPs (which are specialized on specific limit states) and puts it into an easy-to-use format, i.e. delivering fingertip knowledge to enable service life specification of wood to the end-user.		The ClickDesign project aims at developing a tool to predict service life for timber elements and structures. The general objective of WP6 is to bridge the gap between research and practice. In short, WP6 receives input from other WPs (which are specialized on specific limit states) and puts it into an easy-to-use format, i.e. delivering fingertip knowledge to enable service life specification of wood to the end-user.

−	By having a WP dedicated to parsing and putting research output into context, the goal is to increase the project’s impact and value creation to the end-user. The end-user is anyone who is interested in the long-term performance of wood but unable to read scientific papers and parse the raw data.	+	By having a WP dedicated to parsing and putting research output into context, the goal is to increase the project’s impact and value creation to the end user. The end user is anyone who is interested in the long-term performance of wood but unable to read scientific papers and parse the raw data.

	= Importance of context =		= Importance of context =

−	Sometimes, scientific models are simply not convenient to use. For example, we can model the biological degradation of a specific joint in a timber deck made of spruce sapwood using a variety of complex moisture transport models and decay prediction models. However, most end-users are not familiar with such models, nor do they have time to wait for hours to get the results.	+	Sometimes, scientific models are simply not convenient to use. For example, we can model the biological degradation of a specific joint in a timber deck made of spruce sapwood using a variety of complex moisture transport models and decay prediction models. However, most end users are not familiar with such models, nor do they have time to wait for hours to get the results.

−	Other times, the research output needs context. For example, we can predict how the colour of a wooden board changes over time due to superficial photo-degradation, but the end-user is left wondering how this will affect their deck or house. Similarly, we can predict how quickly termites degrade various wood species, but the end-user is perhaps more interested in how they can stop termites from getting into their house in the first place.	+	Other times, the research output needs context. For example, we can predict how the colour of a wooden board changes over time due to superficial photo-degradation, but the end user is left wondering how this will affect their deck or house. Similarly, we can predict how quickly termites degrade various wood species, but the end-user is perhaps more interested in how they can stop termites from getting into their house in the first place.

−	Context is key in bridging the divide between research and end-user. We can remove the need for complex models by delivering pre-calculated scenarios and decay maps, we can provide tools to simulate the aesthetical changes of wood structures and we can work towards providing more general guidelines and recommendations to home owners in termite-risk zones.	+	Context is key in bridging the divide between research and end user. We can remove the need for complex models by delivering pre-calculated scenarios and decay maps, we can provide tools to simulate the aesthetical changes of wood structures and we can work towards providing more general guidelines and recommendations to home owners in termite-risk zones.

	= Challenges =		= Challenges =
Line 45:		Line 45:

	* BRE articles on Designing Buildings Wiki.		* BRE articles on Designing Buildings Wiki.
		+	* Decking.
		+	* Physical Properties of Wood.
		+	* Recognising wood rot and insect damage in buildings.
		+	* Testing timber.
		+	* The use of timber in construction.
		+	* Timber vs wood.

	[[Category:DCN_Product_Knowledge]] [[Category:DCN_Research,_Development_and_Innovation]] [[Category:Research_/_Innovation]] [[Category:Products_/_components]]		[[Category:DCN_Product_Knowledge]] [[Category:DCN_Research,_Development_and_Innovation]] [[Category:Research_/_Innovation]] [[Category:Products_/_components]]

Editor at 12:50, 11 December 2020

2020-12-11T12:50:13Z

← Older revision		Revision as of 12:50, 11 December 2020
Line 43:		Line 43:

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =
		+
		+	* BRE articles on Designing Buildings Wiki.
		+
		+	[[Category:DCN_Product_Knowledge]] [[Category:DCN_Research,_Development_and_Innovation]] [[Category:Research_/_Innovation]] [[Category:Products_/_components]]

Editor at 12:48, 11 December 2020

2020-12-11T12:48:17Z

← Older revision		Revision as of 12:48, 11 December 2020
Line 1:		Line 1:
	{\|		{\|
−	\| [[File:TimberImage.jpg]]	+	\| [[File:TimberImage.jpg\|link=File:TimberImage.jpg]]
		+	\|-
		+	\| The image above shows the method currently used by the prototype ClickDesign tool, where the wood texture is rendered from a 3D model and projected onto a wooden cladding, whereafter the end user can change the degree of weathering to explore how the visual appearance of the wall will change over time.
	\|}		\|}

Line 9:		Line 11:
	A structure can have several limit states relating to different performance criteria, such as safety, functionality and aesthetics. The service life depends on a set of relevant performance criteria, the acceptable limits states, the mechanisms involved as well as maintenance to counteract the effect of those mechanisms. For example, a façade should remain tight, maintain some level of structural integrity and remain aesthetically appealing. See the illustration in the figure below for additional examples.		A structure can have several limit states relating to different performance criteria, such as safety, functionality and aesthetics. The service life depends on a set of relevant performance criteria, the acceptable limits states, the mechanisms involved as well as maintenance to counteract the effect of those mechanisms. For example, a façade should remain tight, maintain some level of structural integrity and remain aesthetically appealing. See the illustration in the figure below for additional examples.

−	[[File:TimberGraph.png\|link=File:TimberGraph.png]]	+	{\|
		+	\| [[File:TimberGraph.png\|link=File:TimberGraph.png]]
		+	\|}

	As such, there are several mechanisms and limit states involved in the service life assessment. On the other hand, the main concern of a structural beam is safety, which often involves only wood-destroying fungi as degrading mechanism.		As such, there are several mechanisms and limit states involved in the service life assessment. On the other hand, the main concern of a structural beam is safety, which often involves only wood-destroying fungi as degrading mechanism.
Line 15:		Line 19:
	= From research to practice =		= From research to practice =

−	The ClickDesign project aims at developing a tool to predict service life for timber elements and structures. The general objective of ~~WP 6~~ is to bridge the gap between research and practice. In short, WP6 receives input from other WPs (which are specialized on specific limit states) and puts it into an easy-to-use format, i.e. delivering fingertip knowledge to enable service life specification of wood to the end-user. By having a WP dedicated to parsing and putting research output into context, the goal is to increase the project’s impact and value creation to the end-user. The end-user is anyone who is interested in the long-term performance of wood but unable to read scientific papers and parse the raw data.	+	The ClickDesign project aims at developing a tool to predict service life for timber elements and structures. The general objective of WP6 is to bridge the gap between research and practice. In short, WP6 receives input from other WPs (which are specialized on specific limit states) and puts it into an easy-to-use format, i.e. delivering fingertip knowledge to enable service life specification of wood to the end-user.
		+
		+	By having a WP dedicated to parsing and putting research output into context, the goal is to increase the project’s impact and value creation to the end-user. The end-user is anyone who is interested in the long-term performance of wood but unable to read scientific papers and parse the raw data.

	= Importance of context =		= Importance of context =

−	Sometimes, scientific models are simply not convenient to use. For example, ~~today~~ we can model the biological degradation of a specific joint in a timber deck made of spruce sapwood using a variety of complex moisture transport models and decay prediction models. However, most end-users are not familiar with such models, nor do they have time to wait for hours to get the results. Other times, the research output needs context. For example, we can predict how the colour of a wooden board changes over time due to superficial photo-degradation, but the end-user is left wondering how this will affect their deck or house. Similarly, we can predict how quickly termites degrade various wood species, but the end-user is perhaps more interested in how they can stop termites from getting into their house in the first place.	+	Sometimes, scientific models are simply not convenient to use. For example, we can model the biological degradation of a specific joint in a timber deck made of spruce sapwood using a variety of complex moisture transport models and decay prediction models. However, most end-users are not familiar with such models, nor do they have time to wait for hours to get the results.
		+
		+	Other times, the research output needs context. For example, we can predict how the colour of a wooden board changes over time due to superficial photo-degradation, but the end-user is left wondering how this will affect their deck or house. Similarly, we can predict how quickly termites degrade various wood species, but the end-user is perhaps more interested in how they can stop termites from getting into their house in the first place.

	Context is key in bridging the divide between research and end-user. We can remove the need for complex models by delivering pre-calculated scenarios and decay maps, we can provide tools to simulate the aesthetical changes of wood structures and we can work towards providing more general guidelines and recommendations to home owners in termite-risk zones.		Context is key in bridging the divide between research and end-user. We can remove the need for complex models by delivering pre-calculated scenarios and decay maps, we can provide tools to simulate the aesthetical changes of wood structures and we can work towards providing more general guidelines and recommendations to home owners in termite-risk zones.
Line 25:		Line 33:
	= Challenges =		= Challenges =

−	The work of WP6 is extremely interdisciplinary. We need to follow and understand most of the activities in the project, without going too much into detail. Being creative and flexible is key, as we often encounter new types of challenges. For example, a key part in modelling the visual appearance of wood is to ~~visualize~~ organic wood texture. The image below shows the method currently used by the prototype ClickDesign tool, where the wood texture is rendered from a 3D model and projected onto a wooden cladding, whereafter the user can change the degree of weathering to explore how the visual appearance of the wall will change over time.	+	The work of WP6 is extremely interdisciplinary. We need to follow and understand most of the activities in the project without going too much into detail. Being creative and flexible is key, as we often encounter new types of challenges. For example, a key part in modelling the visual appearance of wood is to visualise organic wood texture.

	A first version of the tool is planned to be tested against wood industry people and architects during 2020-2021.		A first version of the tool is planned to be tested against wood industry people and architects during 2020-2021.

Editor at 12:40, 11 December 2020

2020-12-11T12:40:26Z

← Older revision		Revision as of 12:40, 11 December 2020
Line 1:		Line 1:
		+	{\|
		+	\| [[File:TimberImage.jpg]]
		+	\|}
		+
	= Introduction =		= Introduction =

−	Timber structures and commodities are exposed to several mechanisms that limit their service life. The term service life refers to the duration until a limit state is reached, i.e. when the performance is no longer deemed acceptable. A structure can have several limit states relating to different performance criteria, such as safety, functionality and aesthetics. The service life depends on a set of relevant performance criteria, the acceptable limits states, the mechanisms involved as well as maintenance to counteract the effect of those mechanisms~~, as illustrated in the figure below~~. For example, a façade should remain tight, maintain some level of structural integrity and remain aesthetically appealing. ~~As such, there are several mechanisms and limit states involved~~ in the ~~service life assessment. On the other hand, the main concern of a structural beam is safety, which often involves only wood-destroying fungi as degrading mechanism~~.	+	Timber structures and commodities are exposed to several mechanisms that limit their service life. The term service life refers to the duration until a limit state is reached, i.e. when the performance is no longer deemed acceptable.
		+
		+	A structure can have several limit states relating to different performance criteria, such as safety, functionality and aesthetics. The service life depends on a set of relevant performance criteria, the acceptable limits states, the mechanisms involved as well as maintenance to counteract the effect of those mechanisms. For example, a façade should remain tight, maintain some level of structural integrity and remain aesthetically appealing. See the illustration in the figure below for additional examples.

	[[File:TimberGraph.png\|link=File:TimberGraph.png]]		[[File:TimberGraph.png\|link=File:TimberGraph.png]]
		+
		+	As such, there are several mechanisms and limit states involved in the service life assessment. On the other hand, the main concern of a structural beam is safety, which often involves only wood-destroying fungi as degrading mechanism.

	= From research to practice =		= From research to practice =

Editor at 11:33, 11 December 2020

2020-12-11T11:33:00Z

← Older revision		Revision as of 11:33, 11 December 2020
Line 3:		Line 3:
	Timber structures and commodities are exposed to several mechanisms that limit their service life. The term service life refers to the duration until a limit state is reached, i.e. when the performance is no longer deemed acceptable. A structure can have several limit states relating to different performance criteria, such as safety, functionality and aesthetics. The service life depends on a set of relevant performance criteria, the acceptable limits states, the mechanisms involved as well as maintenance to counteract the effect of those mechanisms, as illustrated in the figure below. For example, a façade should remain tight, maintain some level of structural integrity and remain aesthetically appealing. As such, there are several mechanisms and limit states involved in the service life assessment. On the other hand, the main concern of a structural beam is safety, which often involves only wood-destroying fungi as degrading mechanism.		Timber structures and commodities are exposed to several mechanisms that limit their service life. The term service life refers to the duration until a limit state is reached, i.e. when the performance is no longer deemed acceptable. A structure can have several limit states relating to different performance criteria, such as safety, functionality and aesthetics. The service life depends on a set of relevant performance criteria, the acceptable limits states, the mechanisms involved as well as maintenance to counteract the effect of those mechanisms, as illustrated in the figure below. For example, a façade should remain tight, maintain some level of structural integrity and remain aesthetically appealing. As such, there are several mechanisms and limit states involved in the service life assessment. On the other hand, the main concern of a structural beam is safety, which often involves only wood-destroying fungi as degrading mechanism.

−	[[File:TimberGraph.png]]	+	[[File:TimberGraph.png\|link=File:TimberGraph.png]]

	= From research to practice =		= From research to practice =
Line 22:		Line 22:

	-----		-----
−	This article originally appeared on the [https://www.bregroup.com/insights/predicting-service-life-of-timber-structures/ BRE] website. It was written by By Jonas Niklewski and Eva Frühwald Hansson and published in December 2020.	+	This article originally appeared on the [https://www.bregroup.com/insights/predicting-service-life-of-timber-structures/ BRE] website. It was written by Jonas Niklewski and Eva Frühwald Hansson and published in December 2020.

	--[[User:BRE_Group\|BRE Group]]		--[[User:BRE_Group\|BRE Group]]

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

Editor: Created page with "= Introduction = Timber structures and commodities are exposed to several mechanisms that limit their service life. The term service life refers to the duration until a limit st..."

2020-12-11T11:29:49Z

Created page with "= Introduction = Timber structures and commodities are exposed to several mechanisms that limit their service life. The term service life refers to the duration until a limit st..."

New page

= Introduction =

Timber structures and commodities are exposed to several mechanisms that limit their service life. The term service life refers to the duration until a limit state is reached, i.e. when the performance is no longer deemed acceptable. A structure can have several limit states relating to different performance criteria, such as safety, functionality and aesthetics. The service life depends on a set of relevant performance criteria, the acceptable limits states, the mechanisms involved as well as maintenance to counteract the effect of those mechanisms, as illustrated in the figure below. For example, a façade should remain tight, maintain some level of structural integrity and remain aesthetically appealing. As such, there are several mechanisms and limit states involved in the service life assessment. On the other hand, the main concern of a structural beam is safety, which often involves only wood-destroying fungi as degrading mechanism.

[[File:TimberGraph.png]]

= From research to practice =

The ClickDesign project aims at developing a tool to predict service life for timber elements and structures. The general objective of WP 6 is to bridge the gap between research and practice. In short, WP6 receives input from other WPs (which are specialized on specific limit states) and puts it into an easy-to-use format, i.e. delivering fingertip knowledge to enable service life specification of wood to the end-user. By having a WP dedicated to parsing and putting research output into context, the goal is to increase the project’s impact and value creation to the end-user. The end-user is anyone who is interested in the long-term performance of wood but unable to read scientific papers and parse the raw data.

= Importance of context =

Sometimes, scientific models are simply not convenient to use. For example, today we can model the biological degradation of a specific joint in a timber deck made of spruce sapwood using a variety of complex moisture transport models and decay prediction models. However, most end-users are not familiar with such models, nor do they have time to wait for hours to get the results. Other times, the research output needs context. For example, we can predict how the colour of a wooden board changes over time due to superficial photo-degradation, but the end-user is left wondering how this will affect their deck or house. Similarly, we can predict how quickly termites degrade various wood species, but the end-user is perhaps more interested in how they can stop termites from getting into their house in the first place.

Context is key in bridging the divide between research and end-user. We can remove the need for complex models by delivering pre-calculated scenarios and decay maps, we can provide tools to simulate the aesthetical changes of wood structures and we can work towards providing more general guidelines and recommendations to home owners in termite-risk zones.

= Challenges =

The work of WP6 is extremely interdisciplinary. We need to follow and understand most of the activities in the project, without going too much into detail. Being creative and flexible is key, as we often encounter new types of challenges. For example, a key part in modelling the visual appearance of wood is to visualize organic wood texture. The image below shows the method currently used by the prototype ClickDesign tool, where the wood texture is rendered from a 3D model and projected onto a wooden cladding, whereafter the user can change the degree of weathering to explore how the visual appearance of the wall will change over time.

A first version of the tool is planned to be tested against wood industry people and architects during 2020-2021.

-----
This article originally appeared on the [https://www.bregroup.com/insights/predicting-service-life-of-timber-structures/ BRE] website. It was written by By Jonas Niklewski and Eva Frühwald Hansson and published in December 2020.

--[[User:BRE_Group|BRE Group]]

= Related articles on Designing Buildings Wiki =