Deconstruction - Revision history

Editor: Reverted edits by Nihgxn (talk) to last revision by Editor

2021-12-16T09:29:34Z

Reverted edits by Nihgxn (talk) to last revision by Editor

← Older revision		Revision as of 09:29, 16 December 2021
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	= Introduction =		= Introduction =

−	Deconstruction has been defined as ~~‘[https://www.designingbuildings.co.uk/wiki/Construction construction]~~ in reverse’. As ~~[https://www.designingbuildings.co.uk/wiki/Construction~~ construction] involves assembling and erecting ~~[https://www.designingbuildings.co.uk/wiki/Building~~ buildings], so deconstruction is the ~~[https://www.designingbuildings.co.uk/wiki/Complete~~ complete] opposite: it involves taking ~~[https://www.designingbuildings.co.uk/wiki/Building~~ buildings] apart piece by piece, avoiding ~~[https://www.designingbuildings.co.uk/wiki/Damages~~ damage] by extracting carefully what is required. This contrasts with ~~[https://www.designingbuildings.co.uk/wiki/Demolition~~ demolition] which tends to be a relatively arbitrary and destructive process, although generally quicker.	+	Deconstruction has been defined as ‘construction in reverse’. As construction involves assembling and erecting buildings, so deconstruction is the complete opposite: it involves taking buildings apart piece by piece, avoiding damage by extracting carefully what is required. This contrasts with demolition which tends to be a relatively arbitrary and destructive process, although generally quicker. Falling materials, noise, nuisance and dust often accompany conventional demolitions, not to mention large amounts of waste.

−	~~Deconstruction~~ is ~~used synonymously with disassembly which~~ has been ~~defined as ‘non~~-destructive taking-apart of a construction works or constructed asset into constituent materials or components’ ([https://www.iso.org/standard/69370.html ISO 20887:2020 Design for disassembly and adaptability — Principles, requirements and guidance]) opposed to demolition which is defined as ‘removal of construction works or ~~constructed assets by destructive methods~~.’	+	A building may be deconstructed if it is located in a sensitive area and its demolition would involve danger to the immediate vicinity, or if it has been designed for deconstruction so that its parts can be re-used or recycled.

	= Benefits =		= Benefits =

−	Deconstruction may be chosen over demolition for various reasons, but commonly happens due to either economic reasons, site location, (e.g. [https://www.designingbuildings.co.uk/wiki/Sensitive_area sensitive area]s where [https://www.designingbuildings.co.uk/wiki/Demolition demolition] would involve danger to the immediate vicinity), preservation of items of historic/conservation interest or for environmental reasons where re-use or recycling of materials or components is prioritised. In such cases deconstruction may offer [https://www.designingbuildings.co.uk/wiki/Benefit benefits] compared to demolition ~~such as~~:	+	Deconstruction offers the following benefits compared to demolition:

−	* ~~Lowering~~ the requirement for extracting virgin ~~[https://www.designingbuildings.co.uk/wiki/Resource~~ resources].	+	* Lowers the requirement for extracting virgin resources.
−	* Can be a cleaner, more environmentally-friendly process with less ~~[https://www.designingbuildings.co.uk/wiki/Pollution~~ pollution] released into the atmosphere and into ~~[https://www.designingbuildings.co.uk/wiki/Water~~ water] courses.	+	* Can be a cleaner, more environmentally-friendly process with less pollution released into the atmosphere and into water courses.
−	* Can result in less ~~[https://www.designingbuildings.co.uk/wiki/Embodied_energy~~ embodied energy] compared to a totally new ~~[https://www.designingbuildings.co.uk/wiki/Building~~ building].	+	* Can result in less embodied energy compared to a totally new building.
−	* ~~[https://www.designingbuildings.co.uk/wiki/Safe Saving] [https://www.designingbuildings.co.uk/wiki/Energy~~ energy] due to fewer ~~[https://www.designingbuildings.co.uk/wiki/Loads~~ loads] transported to ~~[https://www.designingbuildings.co.uk/wiki/Site~~ site].	+	* Saves energy due to fewer loads transported to site.
−	* ~~Allowing [https://www.designingbuildings.co.uk/wiki/Materials~~ materials] to be reused or recycled and so contributes to the ~~[https://www.designingbuildings.co.uk/wiki/Circular_economy~~ circular economy].	+	* Allows materials to be reused or recycled and so contributes to the circular economy.
−	* ~~Offering~~ controlled ~~[https://www.designingbuildings.co.uk/wiki/Waste_management~~ waste management].	+	* Offers controlled waste management.
−	* Reused ~~[https://www.designingbuildings.co.uk/wiki/Materials~~ materials] from deconstruction can offer a different ~~[https://www.designingbuildings.co.uk/wiki/Aesthetics~~ aesthetic] to newly ~~[https://www.designingbuildings.co.uk/wiki/Manufactured~~ manufactured~~] [https://www.designingbuildings.co.uk/wiki/Materials~~ materials].	+	* Reused materials from deconstruction can offer a different aesthetic to newly manufactured materials.
−	* Deconstruction ~~[https://www.designingbuildings.co.uk/wiki/Activities~~ activities] tend to be more ~~[https://www.designingbuildings.co.uk/wiki/Labour~~ labour] intensive therefore they can provide more jobs locally.	+	* Deconstruction activities tend to be more labour intensive therefore they can provide more jobs locally.
−	* Less ~~[https://www.designingbuildings.co.uk/wiki/Materials~~ material] goes to ~~[https://www.designingbuildings.co.uk/wiki/Landfill~~ landfill].	+	* Less material goes to landfill.

	= Why deconstruct? =		= Why deconstruct? =
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	* Sustainable materials		* Sustainable materials

−	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:~~Construction_techniques~~]] [[Category:~~Design~~]] [[Category:~~Products_/_components~~]] [[Category:~~Circular_economy~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Circular_economy]] [[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]]

Nihgxn at 09:26, 16 December 2021

2021-12-16T09:26:26Z

← Older revision		Revision as of 09:26, 16 December 2021
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	= Introduction =		= Introduction =

−	Deconstruction has been defined as ~~‘construction~~ in reverse’. As construction involves assembling and erecting buildings, so deconstruction is the complete opposite: it involves taking buildings apart piece by piece, avoiding damage by extracting carefully what is required. This contrasts with demolition which tends to be a relatively arbitrary and destructive process, although generally quicker~~. Falling materials, noise, nuisance and dust often accompany conventional demolitions, not to mention large amounts of waste~~.	+	Deconstruction has been defined as ‘[https://www.designingbuildings.co.uk/wiki/Construction construction] in reverse’. As [https://www.designingbuildings.co.uk/wiki/Construction construction] involves assembling and erecting [https://www.designingbuildings.co.uk/wiki/Building buildings], so deconstruction is the [https://www.designingbuildings.co.uk/wiki/Complete complete] opposite: it involves taking [https://www.designingbuildings.co.uk/wiki/Building buildings] apart piece by piece, avoiding [https://www.designingbuildings.co.uk/wiki/Damages damage] by extracting carefully what is required. This contrasts with [https://www.designingbuildings.co.uk/wiki/Demolition demolition] which tends to be a relatively arbitrary and destructive process, although generally quicker.

−	~~A building may be deconstructed if it~~ is ~~located in a sensitive area and its demolition would involve danger to the immediate vicinity, or if it~~ has been ~~designed for deconstruction so that its parts can be re~~-~~used~~ or ~~recycled~~.	+	Deconstruction is used synonymously with disassembly which has been defined as ‘non-destructive taking-apart of a construction works or constructed asset into constituent materials or components’ ([https://www.iso.org/standard/69370.html ISO 20887:2020 Design for disassembly and adaptability — Principles, requirements and guidance]) opposed to demolition which is defined as ‘removal of construction works or constructed assets by destructive methods.’

	= Benefits =		= Benefits =

−	Deconstruction ~~offers~~ the ~~following~~ benefits compared to demolition:	+	Deconstruction may be chosen over demolition for various reasons, but commonly happens due to either economic reasons, site location, (e.g. [https://www.designingbuildings.co.uk/wiki/Sensitive_area sensitive area]s where [https://www.designingbuildings.co.uk/wiki/Demolition demolition] would involve danger to the immediate vicinity), preservation of items of historic/conservation interest or for environmental reasons where re-use or recycling of materials or components is prioritised. In such cases deconstruction may offer [https://www.designingbuildings.co.uk/wiki/Benefit benefits] compared to demolition such as:

−	* ~~Lowers~~ the requirement for extracting virgin resources.	+	* Lowering the requirement for extracting virgin [https://www.designingbuildings.co.uk/wiki/Resource resources].
−	* Can be a cleaner, more environmentally-friendly process with less pollution released into the atmosphere and into water courses.	+	* Can be a cleaner, more environmentally-friendly process with less [https://www.designingbuildings.co.uk/wiki/Pollution pollution] released into the atmosphere and into [https://www.designingbuildings.co.uk/wiki/Water water] courses.
−	* Can result in less embodied energy compared to a totally new building.	+	* Can result in less [https://www.designingbuildings.co.uk/wiki/Embodied_energy embodied energy] compared to a totally new [https://www.designingbuildings.co.uk/wiki/Building building].
−	* ~~Saves~~ energy due to fewer loads transported to site.	+	* [https://www.designingbuildings.co.uk/wiki/Safe Saving] [https://www.designingbuildings.co.uk/wiki/Energy energy] due to fewer [https://www.designingbuildings.co.uk/wiki/Loads loads] transported to [https://www.designingbuildings.co.uk/wiki/Site site].
−	* ~~Allows~~ materials to be reused or recycled and so contributes to the circular economy.	+	* Allowing [https://www.designingbuildings.co.uk/wiki/Materials materials] to be reused or recycled and so contributes to the [https://www.designingbuildings.co.uk/wiki/Circular_economy circular economy].
−	* ~~Offers~~ controlled waste management.	+	* Offering controlled [https://www.designingbuildings.co.uk/wiki/Waste_management waste management].
−	* Reused materials from deconstruction can offer a different aesthetic to newly manufactured materials.	+	* Reused [https://www.designingbuildings.co.uk/wiki/Materials materials] from deconstruction can offer a different [https://www.designingbuildings.co.uk/wiki/Aesthetics aesthetic] to newly [https://www.designingbuildings.co.uk/wiki/Manufactured manufactured] [https://www.designingbuildings.co.uk/wiki/Materials materials].
−	* Deconstruction activities tend to be more labour intensive therefore they can provide more jobs locally.	+	* Deconstruction [https://www.designingbuildings.co.uk/wiki/Activities activities] tend to be more [https://www.designingbuildings.co.uk/wiki/Labour labour] intensive therefore they can provide more jobs locally.
−	* Less material goes to landfill.	+	* Less [https://www.designingbuildings.co.uk/wiki/Materials material] goes to [https://www.designingbuildings.co.uk/wiki/Landfill landfill].

	= Why deconstruct? =		= Why deconstruct? =
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	* Sustainable materials		* Sustainable materials

−	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:~~Circular_economy~~]] [[Category:~~Construction_techniques~~]] [[Category:~~Design~~]] [[Category:~~Products_/_components~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]] [[Category:Circular_economy]]

Editor at 16:47, 11 June 2021

2021-06-11T16:47:52Z

← Older revision		Revision as of 16:47, 11 June 2021
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	* End of life potential.		* End of life potential.
	* Energy targets.		* Energy targets.
		+	* Examining the 2021 construction materials shortage.
	* Forensic engineering in developing countries.		* Forensic engineering in developing countries.
	* Kit house.		* Kit house.

Designing Buildings at 09:40, 24 March 2021

2021-03-24T09:40:41Z

← Older revision		Revision as of 09:40, 24 March 2021
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	* Sustainable materials		* Sustainable materials

−	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Circular_economy]] [[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]]

Designing Buildings at 07:20, 2 February 2021

2021-02-02T07:20:53Z

← Older revision		Revision as of 07:20, 2 February 2021
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	* Sustainable materials		* Sustainable materials

−	[[Category:~~Construction_techniques~~]] [[Category:~~Design~~]] [[Category:~~Products_/_components~~]] [[Category:~~DCN_Product_Knowledge~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]]

Designing Buildings at 06:34, 5 June 2019

2019-06-05T06:34:58Z

← Older revision		Revision as of 06:34, 5 June 2019
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−	[[File:BREoffice1.jpg]]	+	[[File:BREoffice1.jpg\|link=File:BREoffice1.jpg]]

	= Introduction =		= Introduction =
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	When materials are reused/recycled, the resulting building can have less embodied energy and so a smaller carbon footprint. Designing for deconstruction (DfD) requires that designers focus on sustainability, durability and lifecycle analysis, especially when choosing materials and ensuring that the construction process does not render future deconstruction an impractical process. High quality materials integrated into a construction that is as simple as possible can be effective as well as avoiding the use of techniques that rely on nailing and adhesives.		When materials are reused/recycled, the resulting building can have less embodied energy and so a smaller carbon footprint. Designing for deconstruction (DfD) requires that designers focus on sustainability, durability and lifecycle analysis, especially when choosing materials and ensuring that the construction process does not render future deconstruction an impractical process. High quality materials integrated into a construction that is as simple as possible can be effective as well as avoiding the use of techniques that rely on nailing and adhesives.
−
−	~~For more information see: Design for deconstruction.~~

	Deconstruction may also keep alive traditional building crafts, such as the use of lime mortars and stone dressings. Furthermore, it can provide opportunities for trainees and apprentices to learn how buildings are put together and to gain skills, such as in basic carpentry, critical thinking and teamwork.		Deconstruction may also keep alive traditional building crafts, such as the use of lime mortars and stone dressings. Furthermore, it can provide opportunities for trainees and apprentices to learn how buildings are put together and to gain skills, such as in basic carpentry, critical thinking and teamwork.
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	* Cradle to cradle product registry system.		* Cradle to cradle product registry system.
	* Decommissioning.		* Decommissioning.
		+	* Design for deconstruction.
	* Design for deconstruction, BRE modular show house.		* Design for deconstruction, BRE modular show house.
	* Design for deconstruction, office building.		* Design for deconstruction, office building.
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	* Sustainable materials		* Sustainable materials

−	[[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]]	+	[[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

Designing Buildings at 06:34, 5 June 2019

2019-06-05T06:34:22Z

← Older revision		Revision as of 06:34, 5 June 2019
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		+	[[File:BREoffice1.jpg]]
		+
	= Introduction =		= Introduction =

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	Timber lends itself to easier reuse than say, brick, stone or metal. The benefits of avoiding timber waste mean fewer disposal costs, a reduction in greenhouse gas emissions (methane) from decomposition. The process typically has a 33% efficiency rate: it is estimated that every three square-feet of deconstructed timber will yield around one square foot of new timber construction.		Timber lends itself to easier reuse than say, brick, stone or metal. The benefits of avoiding timber waste mean fewer disposal costs, a reduction in greenhouse gas emissions (methane) from decomposition. The process typically has a 33% efficiency rate: it is estimated that every three square-feet of deconstructed timber will yield around one square foot of new timber construction.
−
−

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

Designing Buildings at 06:32, 5 June 2019

2019-06-05T06:32:12Z

← Older revision		Revision as of 06:32, 5 June 2019
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−	Deconstruction has been defined as ‘construction in reverse’. As construction involves assembling and erecting buildings, so deconstruction is the complete opposite: it involves taking buildings apart piece by piece, avoiding damage by extracting carefully what is required. This contrasts with demolition which tends to be an arbitrary and destructive process, although far quicker. Falling materials, noise, nuisance and dust often accompany conventional demolitions, not to mention large amounts of waste.	+	= Introduction =

−	A building may ~~have to~~ be deconstructed if it is located in a sensitive area and its demolition would involve danger to the immediate vicinity.	+	Deconstruction has been defined as ‘construction in reverse’. As construction involves assembling and erecting buildings, so deconstruction is the complete opposite: it involves taking buildings apart piece by piece, avoiding damage by extracting carefully what is required. This contrasts with demolition which tends to be a relatively arbitrary and destructive process, although generally quicker. Falling materials, noise, nuisance and dust often accompany conventional demolitions, not to mention large amounts of waste.
		+
		+	A building may be deconstructed if it is located in a sensitive area and its demolition would involve danger to the immediate vicinity, or if it has been designed for deconstruction so that its parts can be re-used or recycled.
		+
		+	= Benefits =
		+
		+	Deconstruction offers the following benefits compared to demolition:
		+
		+	* Lowers the requirement for extracting virgin resources.
		+	* Can be a cleaner, more environmentally-friendly process with less pollution released into the atmosphere and into water courses.
		+	* Can result in less embodied energy compared to a totally new building.
		+	* Saves energy due to fewer loads transported to site.
		+	* Allows materials to be reused or recycled and so contributes to the circular economy.
		+	* Offers controlled waste management.
		+	* Reused materials from deconstruction can offer a different aesthetic to newly manufactured materials.
		+	* Deconstruction activities tend to be more labour intensive therefore they can provide more jobs locally.
		+	* Less material goes to landfill.

	= Why deconstruct? =		= Why deconstruct? =

−	Deconstruction allows the reuse of materials, which is more environmentally friendly and results in less waste going to landfill – this is critical as construction and demolition waste can comprise up to 20% of all solid waste that ends up in landfills. ~~It can also be the case that~~ some materials ~~at the point of deconstruction are~~ more valuable ~~than~~ at the time of the original construction, ~~especially with~~ some types of brick ~~and~~ decorative cast iron.	+	Deconstruction allows the reuse of materials, which is more environmentally friendly and results in less waste going to landfill – this is critical as construction and demolition waste can comprise up to 20% of all solid waste that ends up in landfills. In addition, some materials may have become more valuable at the time of deconstruction than they were during the original construction, such as some types of brick, decorative cast iron and so on.

−	When materials are reused/recycled, the resulting building can have less embodied energy and so a smaller carbon footprint. Designing for deconstruction (DfD) requires designers to focus on sustainability, durability and lifecycle analysis, especially when choosing materials and ensuring that the construction process does not render future deconstruction an impractical process. High quality materials integrated into a construction that is as simple as possible ~~seem to work best for DfD. This avoids wherever possible~~ the use of techniques that rely on nailing and adhesives.	+	When materials are reused/recycled, the resulting building can have less embodied energy and so a smaller carbon footprint. Designing for deconstruction (DfD) requires that designers focus on sustainability, durability and lifecycle analysis, especially when choosing materials and ensuring that the construction process does not render future deconstruction an impractical process. High quality materials integrated into a construction that is as simple as possible can be effective as well as avoiding the use of techniques that rely on nailing and adhesives.

−	Deconstruction may also keep alive ~~certain~~ traditional building crafts, such as the use of lime mortars and stone dressings. Furthermore, it can provide opportunities for trainees and apprentices to learn how buildings are put together and to gain skills, such as in basic carpentry, critical thinking and teamwork~~. This may be particularly applicable to deprived inner city areas~~.	+	For more information see: Design for deconstruction.
		+
		+	Deconstruction may also keep alive traditional building crafts, such as the use of lime mortars and stone dressings. Furthermore, it can provide opportunities for trainees and apprentices to learn how buildings are put together and to gain skills, such as in basic carpentry, critical thinking and teamwork.

	However, not all materials can be salvaged for reuse. Of these, some can be recycled on- or off-site otherwise they may have to be taken to landfill, while hazardous materials, such as asbestos and lead paint, require expert disposal.		However, not all materials can be salvaged for reuse. Of these, some can be recycled on- or off-site otherwise they may have to be taken to landfill, while hazardous materials, such as asbestos and lead paint, require expert disposal.

−	~~However, deconstruction~~ tends to be a labour-intensive process given its selective nature. It can take weeks to harvest materials from a structure whereas demolition can be completed in as little as a day.	+	Deconstruction tends to be a labour-intensive process given its selective nature. It can take weeks to harvest materials from a structure, whereas demolition can be completed in as little as a day.

	A typical deconstruction process involves first removing windows, doors, appliances and finishes from the structure, much of which may be reused or resold. Then the structure is dismantled, usually from the roof, through the middle floors, down to the foundations.		A typical deconstruction process involves first removing windows, doors, appliances and finishes from the structure, much of which may be reused or resold. Then the structure is dismantled, usually from the roof, through the middle floors, down to the foundations.
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	= DfD design principles =		= DfD design principles =

−	Ten common principles ~~in the~~ design for deconstruction ~~process~~ are:	+	Ten common principles of design for deconstruction are:

−	* Design for prefabrication, ~~preassembly~~ and modular construction: prefabricated units are easily deconstructed and can be transported in large units. Additionally, modular construction materials allow for large quantities to be transported in one journey.	+	* Design for prefabrication, pre-assembly and modular construction: prefabricated units are generally easily deconstructed and can be transported in large units. Additionally, modular construction materials allow for large quantities to be transported in one journey.
	* Simplify and standardise connection details: this allows for efficient construction and deconstruction and reduces the need for multiple tools.		* Simplify and standardise connection details: this allows for efficient construction and deconstruction and reduces the need for multiple tools.
−	* Simplify and separate building systems: separating out the distribution systems within non-structural walls can allow for selective removal of ~~the~~ low-value components.Consolidating plumbing services will also reduce the lengths of pipe required;	+	* Simplify and separate building systems: separating out the distribution systems within non-structural walls can allow for selective removal of low-value components. Consolidating plumbing services will also reduce the lengths of pipe required.
−	* Consideration of worker safety: the design should aim to reduce potential hazards and the use of potentially hazardous materials;	+	* Consideration of worker safety: the design should aim to reduce potential hazards and the use of potentially hazardous materials.
−	* Minimise building parts and materials: the design should aim to minimise the ~~amount~~ of building materials and equipment required;	+	* Minimise building parts and materials: the design should aim to minimise the number of building materials and the equipment required.
−	* Select fittings, fasteners, adhesives, sealants etc that allow for disassembly;	+	* Select fittings, fasteners, adhesives, sealants etc that allow for disassembly.
−	* Design to allow for deconstruction logistics: small design tweaks can allow for significant improvements in waste-removal efficiency;	+	* Design to allow for deconstruction logistics: small design tweaks can allow for significant improvements in waste-removal efficiency.
−	* Reduce building complexity: this will reduce costs and improve buildability as well as simplifying the deconstruction process;	+	* Reduce building complexity: this will reduce costs and improve buildability as well as simplifying the deconstruction process.
−	* Design with reusable materials: consideration of materials that are adaptable and will be useful in the future. Materials such as wood, steel members, brick and carpet tiles ~~can easily~~ be reused or refurbished~~, and~~	+	* Design with reusable materials: consideration of materials that are adaptable and will be useful in the future. Materials such as wood, steel members, brick and carpet tiles may be reused or refurbished.
	* Design for flexibility and adaptability: the design should consider any future renovations or adaptations that may be required to extend the life of the building.		* Design for flexibility and adaptability: the design should consider any future renovations or adaptations that may be required to extend the life of the building.

−	= ~~The case with the timber~~ =	+	= Timber =

−	Timber ~~is a material that~~ lends itself to easier reuse than say, brick, stone or metal. The benefits of avoiding ~~wood~~ waste mean fewer disposal costs, a reduction in greenhouse gas emissions (methane) from ~~less wood~~ decomposition ~~and providing more employment for the local economy, especially as wood tends to be a much-loved material for manual reworking~~. The process ~~also~~ has a 33% efficiency rate: it is estimated that every three square-feet of deconstructed timber will yield around one square foot of new timber construction.	+	Timber lends itself to easier reuse than say, brick, stone or metal. The benefits of avoiding timber waste mean fewer disposal costs, a reduction in greenhouse gas emissions (methane) from decomposition. The process typically has a 33% efficiency rate: it is estimated that every three square-feet of deconstructed timber will yield around one square foot of new timber construction.

−	~~Deconstruction offers the following benefits compared to demolition:~~

−	* Lowers the requirement for extracting virgin resources;
−	* Can be a cleaner, more environmentally-friendly process with less pollution released into the atmosphere and into water courses;
−	* Can result in less embodied energy compared to a totally new building;
−	* Saves energy due to fewer loads transported to site;
−	* Allows materials to be reused or recycled and so contributes to the circular economy;
−	* Offers controlled waste management;
−	* Reused materials from deconstruction can offer a different aesthetic to newly manufactured materials;
−	* A building with a high DfD content may be worth more in an age that values ‘green’ lifestyles;
−	* Deconstruction activities tend to be more labour intensive therefore they can provide more jobs locally;
−	* Less material goes to landfill.

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

Editor at 18:31, 3 June 2019

2019-06-03T18:31:57Z

← Older revision		Revision as of 18:31, 3 June 2019
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	A building may have to be deconstructed if it is located in a sensitive area and its demolition would involve danger to the immediate vicinity.		A building may have to be deconstructed if it is located in a sensitive area and its demolition would involve danger to the immediate vicinity.
		+
		+	= Why deconstruct? =

	Deconstruction allows the reuse of materials, which is more environmentally friendly and results in less waste going to landfill – this is critical as construction and demolition waste can comprise up to 20% of all solid waste that ends up in landfills. It can also be the case that some materials at the point of deconstruction are more valuable than at the time of the original construction, especially with some types of brick and decorative cast iron.		Deconstruction allows the reuse of materials, which is more environmentally friendly and results in less waste going to landfill – this is critical as construction and demolition waste can comprise up to 20% of all solid waste that ends up in landfills. It can also be the case that some materials at the point of deconstruction are more valuable than at the time of the original construction, especially with some types of brick and decorative cast iron.
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	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

−	* Building ~~a better quality~~ of life~~: A strategy for more sustainable~~ construction.	+	* Building pathology.
−	* ~~Construction 2025~~.	+	* Building Revolutions - review.
−	* ~~Construction industry reports~~.	+	* Circular economy.
−	* ~~Egan report~~.	+	* Circular economy in the built environment.
−	* ~~Embodied energy~~.	+	* Climate Change Act.
−	* ~~Government~~ construction ~~strategy~~.	+	* Cradle to cradle product registry system.
−	* ~~Latham report~~.	+	* Decommissioning.
−	* ~~Sustainability in building~~ design ~~and construction~~.	+	* Design for deconstruction, BRE modular show house.
		+	* Design for deconstruction, office building.
		+	* Design for deconstruction, ski slope.
		+	* Dismantling.
		+	* Disposal.
		+	* Emission rates.
		+	* End of life potential.
		+	* Energy targets.
		+	* Forensic engineering in developing countries.
		+	* Kit house.
		+	* Lean construction.
		+	* Mean Lean Green.
		+	* Modular buildings.
		+	* Off-site prefabrication of buildings: A guide to connection choices.
		+	* Prefabrication.
		+	* Recyclable construction materials.
		+	* Site waste management plan.
		+	* Structure relocation.
		+	* Structures at the end of their design life.
	* Sustainability.		* Sustainability.
−	* ~~U-value.~~	+	* Sustainable materials

	[[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]]		[[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]]

Editor at 18:29, 3 June 2019

2019-06-03T18:29:35Z

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	A typical deconstruction process involves first removing windows, doors, appliances and finishes from the structure, much of which may be reused or resold. Then the structure is dismantled, usually from the roof, through the middle floors, down to the foundations.		A typical deconstruction process involves first removing windows, doors, appliances and finishes from the structure, much of which may be reused or resold. Then the structure is dismantled, usually from the roof, through the middle floors, down to the foundations.
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		+	= DfD design principles =
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		+	Ten common principles in the design for deconstruction process are:
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		+	* Design for prefabrication, preassembly and modular construction: prefabricated units are easily deconstructed and can be transported in large units. Additionally, modular construction materials allow for large quantities to be transported in one journey.
		+	* Simplify and standardise connection details: this allows for efficient construction and deconstruction and reduces the need for multiple tools.
		+	* Simplify and separate building systems: separating out the distribution systems within non-structural walls can allow for selective removal of the low-value components.Consolidating plumbing services will also reduce the lengths of pipe required;
		+	* Consideration of worker safety: the design should aim to reduce potential hazards and the use of potentially hazardous materials;
		+	* Minimise building parts and materials: the design should aim to minimise the amount of building materials and equipment required;
		+	* Select fittings, fasteners, adhesives, sealants etc that allow for disassembly;
		+	* Design to allow for deconstruction logistics: small design tweaks can allow for significant improvements in waste-removal efficiency;
		+	* Reduce building complexity: this will reduce costs and improve buildability as well as simplifying the deconstruction process;
		+	* Design with reusable materials: consideration of materials that are adaptable and will be useful in the future. Materials such as wood, steel members, brick and carpet tiles can easily be reused or refurbished, and
		+	* Design for flexibility and adaptability: the design should consider any future renovations or adaptations that may be required to extend the life of the building.

	= The case with the timber =		= The case with the timber =