Durability - Revision history

Editor at 17:00, 25 May 2021

2021-05-25T17:00:12Z

← Older revision		Revision as of 17:00, 25 May 2021
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	* Material handling.		* Material handling.
	* Materials on site.		* Materials on site.
		+	* Mohs scale of mineral hardness.
	* Performance gap.		* Performance gap.
	* Polypropylene.		* Polypropylene.

Designing Buildings at 07:10, 3 December 2020

2020-12-03T07:10:34Z

← Older revision		Revision as of 07:10, 3 December 2020
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	* Truth to materials.		* Truth to materials.

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

Designing Buildings at 13:37, 11 August 2019

2019-08-11T13:37:14Z

← Older revision		Revision as of 13:37, 11 August 2019
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−	~~= Introduction =~~	+	Durability is the resistance to degradation of products, materials, buildings and other built assets over time. This can be a difficult property to assess - whilst a tough material may be hard to the touch but it may also be non-durable if it decomposes or is eroded in a relatively short period of time.The opposite can also be true.

−	~~Durability is~~ the ~~resistance to degradation~~ of ~~materials and buildings over time. A tough~~ material ~~may be hard to~~ the ~~touch but~~ it ~~may also be non-durable if it decomposes or is eroded in a relatively short period of time.The opposite can also be true.~~	+	Many factors affect durability, whether concerning the nature of the material itself or the way it has been assembled with other materials:

−	~~= Factors affecting durability =~~	+	* Molecular structure.
−		+	* Resistance to damp, moisture and water.
−	~~Many factors affect durability, whether concerning the nature of the material itself or the way it has been assembled with other materials. Durability will be affected by:~~	+	* Resistance to corrosive substances.
−		+	* Resistance to vermin and other aggressive animal life such as wood boring beetles.
−	* Molecular structure	+	* Resistance to mould and rot.
−	* Resistance to damp, moisture and water	+	* Fire resistance.
−	* Resistance to corrosive substances	+	* Ability to accept movement.
−	* Resistance to vermin and other aggressive animal life ~~e.g~~ wood boring beetles.	+	* Resistance to atmospheric pollution.
−	* Fire resistance	+	* Resistance to heat and cold.
−	* ~~Design for structural~~ movement	+	* Capacity for moisture absorption.
−	* Resistance to atmospheric pollution	+
−	* Capacity for moisture absorption ~~and~~	+
	* Surface profiles, orientation, texture and colour.		* Surface profiles, orientation, texture and colour.

	As well as its constituent materials, a building as a complete entity may also be said to be durable (or non-durable). Buildings constructed for temporary purposes, such as demountable site cabins and exhibition pavilions, do not tend to stand the test of time because they are not designed to.		As well as its constituent materials, a building as a complete entity may also be said to be durable (or non-durable). Buildings constructed for temporary purposes, such as demountable site cabins and exhibition pavilions, do not tend to stand the test of time because they are not designed to.

−	~~= Climatic~~ and ~~other influences =~~	+	A building will be subjected not only to daily wear and tear from users but also to the constant influence of climate – in particular rain, frost, sun and heat – forces collectively referred to as weathering. Such forces can cause significant deterioration and therefore a reduction in durability.
		+
		+	As well as diminishing durability, weathering forces can also result in a change of appearance – usually a change for the worse – however some materials can be affected beneficially: some stones and brick types for example, as well as some metals such as copper which develop a patina.

−	~~A building will be subjected not only to daily wear and tear from users but also to the constant influence of climate~~ – in ~~particular~~ rain, frost, ~~sun~~ and ~~heat – forces collectively referred to as weathering. Such forces~~, ~~as well those on~~ the ~~inside~~ of ~~a building~~, can ~~cause significant deterioration~~ and therefore ~~a reduction~~ in ~~durability~~.	+	As well as causing potential staining – particularly in polluted areas – some forms of weathering e.g acid rain, result in chemical actions which can cause deterioration of the building fabric. Changes in moisture content, temperature, frost, sunlight, soil and groundwater action, atmospheric pollution and the action of electrolytes, mould and insect attack can lead to corrosion, erosion and disintegration of materials and construction details. Materials must therefore be carefully understood and specified according to their properties, their juxtaposition with other materials in the building and the potential destructive agents they may face.

−	~~As well as diminishing durability, weathering forces~~ can ~~also result in~~ a ~~change of appearance –usually a change for~~ the ~~worse – however some~~ materials ~~can be affected beneficially: some stones and brick types for example~~, ~~as well as some metals such as copper~~ which ~~develop~~ a ~~patina~~.	+	Design can have a direct effect on durability: even the best materials may deteriorate prematurely if they are not adequately maintained, and a design which makes this difficult e.g timberwork that is inaccessible and so infrequently painted, will have adverse effects on component durability. Sometimes, designers must face a trade-off between the initial costs of materials and the likely future costs of maintenance and the resulting effect on durability.

−	~~As well as causing potential staining – particularly~~ in ~~polluted areas – some forms of weathering e.g acid rain, result in chemical actions which can cause deterioration~~ of the ~~building fabric. Changes~~ in ~~moisture content~~, ~~temperature, frost, sunlight, soil and groundwater action, atmospheric pollution and action of electrolytes, mould and insect attack can lead~~ to ~~corrosion, erosion and disintegration~~ of ~~materials and construction details. Materials must therefore be carefully understood and specified according to their properties, their juxtaposition with other materials~~ in ~~the building~~ and ~~the potential destructive agents they may face~~.	+	Economic considerations will play a significant part in determining the durability of a construction: the best possible materials assembled in a considered, careful way tends to be the costliest method of approach yet this may frequently result in best quality and longest durability.

−	~~Design can have~~ a ~~direct effect on durability: even~~ the ~~best materials may deteriorate prematurely if they are not adequately maintained~~, ~~and a design which makes this difficult e.g timberwork that is inaccessible and so infrequently painted~~, ~~will have adverse effects on component durability. Sometimes~~, ~~designers must face a trade-off between initial costs of materials and likely future costs of maintenance and the resulting effect on material –~~ and ~~building – durability~~.	+	Durability is becoming more of a concern in relation to the likely impact of climate change, in particlular, higher temperatures, rising water levels and more frequent extreme weather events.

−	~~Prolonged durability will result from the right material forming part of a carefully~~ designed ~~and constructed assembly. Economic considerations will play a significant part in determining~~ the ~~durability~~ of ~~a construction: the best possible materials assembled in a considered~~, ~~careful way tends to~~ be ~~the costliest method of approach yet this may frequently result in best quality and longest durability~~.	+	In some cases buildings may be designed to be deconstructed, as well as being durable, so that at the end of their lives, they can be easily recycled or re-used.

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =
Line 56:		Line 56:
	* Truth to materials.		* Truth to materials.

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

Editor: Created page with "{| | File:Naturalstone1.jpg |} = Introduction = Durability is the resistance to degradation of materials and buildings over time. A tough material may be hard to the touch ..."

2019-07-30T17:43:47Z

Created page with "{| | File:Naturalstone1.jpg |} = Introduction = Durability is the resistance to degradation of materials and buildings over time. A tough material may be hard to the touch ..."

New page

{|
| [[File:Naturalstone1.jpg]]
|}

= Introduction =

Durability is the resistance to degradation of materials and buildings over time. A tough material may be hard to the touch but it may also be non-durable if it decomposes or is eroded in a relatively short period of time.The opposite can also be true.

= Factors affecting durability =

Many factors affect durability, whether concerning the nature of the material itself or the way it has been assembled with other materials. Durability will be affected by:

* Molecular structure
* Resistance to damp, moisture and water
* Resistance to corrosive substances
* Resistance to vermin and other aggressive animal life e.g wood boring beetles.
* Fire resistance
* Design for structural movement
* Resistance to atmospheric pollution
* Capacity for moisture absorption and
* Surface profiles, orientation, texture and colour.

As well as its constituent materials, a building as a complete entity may also be said to be durable (or non-durable). Buildings constructed for temporary purposes, such as demountable site cabins and exhibition pavilions, do not tend to stand the test of time because they are not designed to.

= Climatic and other influences =

A building will be subjected not only to daily wear and tear from users but also to the constant influence of climate – in particular rain, frost, sun and heat – forces collectively referred to as weathering. Such forces, as well those on the inside of a building, can cause significant deterioration and therefore a reduction in durability.

As well as diminishing durability, weathering forces can also result in a change of appearance –usually a change for the worse – however some materials can be affected beneficially: some stones and brick types for example, as well as some metals such as copper which develop a patina.

As well as causing potential staining – particularly in polluted areas – some forms of weathering e.g acid rain, result in chemical actions which can cause deterioration of the building fabric. Changes in moisture content, temperature, frost, sunlight, soil and groundwater action, atmospheric pollution and action of electrolytes, mould and insect attack can lead to corrosion, erosion and disintegration of materials and construction details. Materials must therefore be carefully understood and specified according to their properties, their juxtaposition with other materials in the building and the potential destructive agents they may face.

Design can have a direct effect on durability: even the best materials may deteriorate prematurely if they are not adequately maintained, and a design which makes this difficult e.g timberwork that is inaccessible and so infrequently painted, will have adverse effects on component durability. Sometimes, designers must face a trade-off between initial costs of materials and likely future costs of maintenance and the resulting effect on material – and building – durability.

Prolonged durability will result from the right material forming part of a carefully designed and constructed assembly. Economic considerations will play a significant part in determining the durability of a construction: the best possible materials assembled in a considered, careful way tends to be the costliest method of approach yet this may frequently result in best quality and longest durability.

= Related articles on Designing Buildings Wiki =

* Approved documents.
* Approved document 7.
* BREEAM Material efficiency.
* Building Regulations.
* Construction buyer.
* Conversion of material volumes.
* Defects.
* Off-site goods and materials.
* Material handling.
* Materials on site.
* Performance gap.
* Polypropylene.
* Quality control.
* Schedule of defects.
* Snagging.
* Supply.
* Testing construction materials.
* Truth to materials.

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