Cob building - Revision history

Designing Buildings at 08:44, 30 October 2021

2021-10-30T08:44:50Z

← Older revision		Revision as of 08:44, 30 October 2021
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	Cob is fire-proof, resistant to seismic activity, and tends to be inexpensive, albeit time-consuming.		Cob is fire-proof, resistant to seismic activity, and tends to be inexpensive, albeit time-consuming.

−	= Related articles on Designing Buildings ~~Wiki~~ =	+	= Related articles on Designing Buildings =

	* Adobe.		* Adobe.
Line 27:		Line 27:
	* Sustainable materials.		* Sustainable materials.
	* Unfired clay masonry: An introduction to low-impact building materials.		* Unfired clay masonry: An introduction to low-impact building materials.
		+	* Vernacular earthen architecture.
	* Wattle and daub.		* Wattle and daub.

	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Construction_techniques]] [[Category:Products_/_components]]		[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Construction_techniques]] [[Category:Products_/_components]]

Designing Buildings at 08:03, 16 November 2020

2020-11-16T08:03:12Z

← Older revision		Revision as of 08:03, 16 November 2020
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	* Wattle and daub.		* Wattle and daub.

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

Editor at 16:53, 13 March 2019

2019-03-13T16:53:39Z

← Older revision		Revision as of 16:53, 13 March 2019
Line 13:		Line 13:
	Cob is fire-proof, resistant to seismic activity, and tends to be inexpensive, albeit time-consuming.		Cob is fire-proof, resistant to seismic activity, and tends to be inexpensive, albeit time-consuming.

−	~~= Find out more =~~	+	= Related articles on Designing Buildings Wiki =
−		+
−	=== Related articles on Designing Buildings Wiki ===	+

	* Adobe.		* Adobe.
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	* Earth building.		* Earth building.
	* Green building.		* Green building.
		+	* Shelter.
	* Straw bale construction.		* Straw bale construction.
	* Sustainable materials.		* Sustainable materials.
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	* Wattle and daub.		* Wattle and daub.

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

Editor at 16:11, 31 July 2018

2018-07-31T16:11:45Z

← Older revision		Revision as of 16:11, 31 July 2018
Line 28:		Line 28:
	* Sustainable materials.		* Sustainable materials.
	* Unfired clay masonry: An introduction to low-impact building materials.		* Unfired clay masonry: An introduction to low-impact building materials.
		+	* Wattle and daub.

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

Editor at 15:04, 28 June 2018

2018-06-28T15:04:06Z

← Older revision		Revision as of 15:04, 28 June 2018
Line 18:		Line 18:

	* Adobe.		* Adobe.
		+	* Clay.
	* Construction materials.		* Construction materials.
	* Daub.		* Daub.

Editor at 16:08, 22 June 2018

2018-06-22T16:08:27Z

← Older revision		Revision as of 16:08, 22 June 2018
Line 19:		Line 19:
	* Adobe.		* Adobe.
	* Construction materials.		* Construction materials.
		+	* Daub.
	* Do green buildings pay?		* Do green buildings pay?
	* Earthen construction.		* Earthen construction.

Designing Buildings at 13:13, 22 June 2018

2018-06-22T13:13:12Z

← Older revision		Revision as of 13:13, 22 June 2018
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−	Cob, also known as cobb, is a building material that comprises subsoil, straw (or another fibrous organic material), water, and occasionally lime. There is evidence of cob being used for building construction purposes ~~dating back to~~ prehistoric times in various parts of the world and was used for centuries in the south-west of England. ~~Due to it using natural materials and being environmentally-friendly, cob~~ building has experienced something of a revival in recent years as ~~an example of~~ a sustainable construction ~~method~~.	+	Cob, also known as cobb, is a building material that comprises subsoil, straw (or another fibrous organic material), water, and occasionally lime. There is evidence of cob being used for building construction purposes in prehistoric times in various parts of the world and it was used for centuries in the south-west of England. Cob building has experienced something of a revival in recent years as a form of sustainable construction.

−	Depending on the contents of the subsoil~~, which can vary~~, sand or clay can be added to achieve the best possible mixture for building. For example, traditional English cob, which was used up until the 1800s when it began to be replaced by more modern construction methods, was a mixture of clay-based subsoil, sand, straw and water.	+	Depending on the contents of the subsoil, sand or clay can be added to achieve the best possible mixture for building. For example, traditional English cob, which was used up until the 1800s when it began to be replaced by more modern construction methods, was a mixture of clay-based subsoil, sand, straw and water.

−	Building with cob is a labour-intensive process, which ~~begins~~ with shovelling or stamping together the cob mixture in foundation courses. The foundation must be wider than the wall, typically by around 300 mm, and sufficiently deep for the load requirements~~. A cob house is usually built on a stone plinth or concrete slab base which is raised off the ground by around 600 mm~~.	+	Building with cob is a labour-intensive process, which may begin with shovelling or stamping together the cob mixture in foundation courses. The foundation must be wider than the wall, typically by around 300 mm, and sufficiently deep for the load requirements.

−	Cob is laid in courses, each one being left to completely dry before the next ~~can be~~ laid. In this way, the walls are built up steadily, tapering slightly as they rise. As cob is strong in terms of load-bearing, two-storey buildings are possible. Windows and doors can be either embedded as the walls are built up using lintels or cut out when fully complete. One of the advantages of using cob is that the walls can be built up to any shape ~~that is~~ required, making it very flexible in terms of design. Traditionally, thick walls (approximately 60 cm) would provide good thermal mass characteristics which would retain heat in cold seasons and keep the interior cool in hot seasons. For additional insulation, stone facing can be used on the base wall and the interior walls plastered.	+	Cob walls are laid in courses, each one being left to completely dry before the next one is laid. In this way, the walls are built up steadily, tapering slightly as they rise. As cob is strong in terms of load-bearing, two-storey buildings are possible. Windows and doors can be either embedded as the walls are built up, either using lintels to support the top, or cut out when fully complete. One of the advantages of using cob is that the walls can be built up to any shape required, making it very flexible in terms of design.

−	~~A suitable roof overhang is necessary to protect the cob~~ walls and ~~foundation from excess contact with moisture~~. ~~At least 200 mm overhang is typical. If vertical cracks develop~~, cob or clay tiles can be used to fix them before moisture penetration risks damaging the wall structure. Cob walls are traditionally left bare or rendered with lime so as to allow them to dry out naturally after becoming wet.	+	Traditionally, thick walls (approximately 60 cm) have provided good thermal mass, which retains heat in cold seasons and keeps the interior cool in hot seasons. It also provides excellent thermal insulation, generally exceeding minimum U-values for domestic buildings.

−	~~The advantages of~~ cob ~~building~~ are ~~that it~~ is fire-proof, resistant to seismic activity, and tends to be inexpensive, albeit time-consuming~~. It also provides excellent thermal insulation, generally exceeding minimum U-values for domestic buildings~~.	+	A suitable roof overhang is necessary to protect the cob walls and foundation from moisture. At least 200 mm overhang is typical. If vertical cracks develop, cob or clay tiles can be used to fix them before moisture penetration risks damaging the wall. Cob walls are traditionally left bare or rendered with lime to allow them to dry out naturally after becoming wet.
		+
		+	Cob is fire-proof, resistant to seismic activity, and tends to be inexpensive, albeit time-consuming.

	= Find out more =		= Find out more =

Editor at 09:45, 22 June 2018

2018-06-22T09:45:55Z

← Older revision		Revision as of 09:45, 22 June 2018
Line 15:		Line 15:
	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===

−	· Earth building.	+	* Adobe.
		+	* Construction materials.
		+	* Do green buildings pay?
		+	* Earthen construction.
		+	* Earth building.
		+	* Green building.
		+	* Straw bale construction.
		+	* Sustainable materials.
		+	* Unfired clay masonry: An introduction to low-impact building materials.

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

Editor: Created page with "Cob, also known as cobb, is a building material that comprises subsoil, straw (or another fibrous organic material), water, and occasionally lime. There is evidence of cob being ..."

2018-06-19T08:38:12Z

Created page with "Cob, also known as cobb, is a building material that comprises subsoil, straw (or another fibrous organic material), water, and occasionally lime. There is evidence of cob being ..."

New page

Cob, also known as cobb, is a building material that comprises subsoil, straw (or another fibrous organic material), water, and occasionally lime. There is evidence of cob being used for building construction purposes dating back to prehistoric times in various parts of the world and was used for centuries in the south-west of England. Due to it using natural materials and being environmentally-friendly, cob building has experienced something of a revival in recent years as an example of a sustainable construction method.

Depending on the contents of the subsoil, which can vary, sand or clay can be added to achieve the best possible mixture for building. For example, traditional English cob, which was used up until the 1800s when it began to be replaced by more modern construction methods, was a mixture of clay-based subsoil, sand, straw and water.

Building with cob is a labour-intensive process, which begins with shovelling or stamping together the cob mixture in foundation courses. The foundation must be wider than the wall, typically by around 300 mm, and sufficiently deep for the load requirements. A cob house is usually built on a stone plinth or concrete slab base which is raised off the ground by around 600 mm.

Cob is laid in courses, each one being left to completely dry before the next can be laid. In this way, the walls are built up steadily, tapering slightly as they rise. As cob is strong in terms of load-bearing, two-storey buildings are possible. Windows and doors can be either embedded as the walls are built up using lintels or cut out when fully complete. One of the advantages of using cob is that the walls can be built up to any shape that is required, making it very flexible in terms of design. Traditionally, thick walls (approximately 60 cm) would provide good thermal mass characteristics which would retain heat in cold seasons and keep the interior cool in hot seasons. For additional insulation, stone facing can be used on the base wall and the interior walls plastered.

A suitable roof overhang is necessary to protect the cob walls and foundation from excess contact with moisture. At least 200 mm overhang is typical. If vertical cracks develop, cob or clay tiles can be used to fix them before moisture penetration risks damaging the wall structure. Cob walls are traditionally left bare or rendered with lime so as to allow them to dry out naturally after becoming wet.

The advantages of cob building are that it is fire-proof, resistant to seismic activity, and tends to be inexpensive, albeit time-consuming. It also provides excellent thermal insulation, generally exceeding minimum U-values for domestic buildings.

= Find out more =

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

· Earth building.

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