Alluvium - Revision history

Designing Buildings at 07:50, 1 September 2021

2021-09-01T07:50:03Z

← Older revision		Revision as of 07:50, 1 September 2021
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	The presence of alluvial deposits may mean that the ground conditions are poor and so can require the construction of a raft foundation, or deep pile foundations. In these conditions, strip or pad foundations would require significant excavation.		The presence of alluvial deposits may mean that the ground conditions are poor and so can require the construction of a raft foundation, or deep pile foundations. In these conditions, strip or pad foundations would require significant excavation.

−	[https://historicengland.org.uk/images-books/publications/geoarchaeology-earth-sciences-to-understand-archaeological-record/ Geoarchaeology, Using Earth Sciences to Understand the Archaeological Record], published by Historic England in ~~20015~~, defines states: ‘alluvium any water-borne sediment is technically alluvium, but the common usage is for fine-grained floodplain deposits’.	+	[https://historicengland.org.uk/images-books/publications/geoarchaeology-earth-sciences-to-understand-archaeological-record/ Geoarchaeology, Using Earth Sciences to Understand the Archaeological Record], published by Historic England in 2015, defines states: ‘alluvium any water-borne sediment is technically alluvium, but the common usage is for fine-grained floodplain deposits’.

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

Designing Buildings at 07:43, 1 September 2021

2021-09-01T07:43:48Z

← Older revision		Revision as of 07:43, 1 September 2021
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	The presence of alluvial deposits may mean that the ground conditions are poor and so can require the construction of a raft foundation, or deep pile foundations. In these conditions, strip or pad foundations would require significant excavation.		The presence of alluvial deposits may mean that the ground conditions are poor and so can require the construction of a raft foundation, or deep pile foundations. In these conditions, strip or pad foundations would require significant excavation.
		+
		+	[https://historicengland.org.uk/images-books/publications/geoarchaeology-earth-sciences-to-understand-archaeological-record/ Geoarchaeology, Using Earth Sciences to Understand the Archaeological Record], published by Historic England in 20015, defines states: ‘alluvium any water-borne sediment is technically alluvium, but the common usage is for fine-grained floodplain deposits’.

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

Designing Buildings at 13:38, 6 October 2020

2020-10-06T13:38:26Z

← Older revision		Revision as of 13:38, 6 October 2020
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	* Types of soil.		* Types of soil.

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

Designing Buildings at 10:18, 9 July 2020

2020-07-09T10:18:18Z

← Older revision		Revision as of 10:18, 9 July 2020
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	The presence of alluvial deposits may mean that the ground conditions are poor and so can require the construction of a raft foundation, or deep pile foundations. In these conditions, strip or pad foundations would require significant excavation.		The presence of alluvial deposits may mean that the ground conditions are poor and so can require the construction of a raft foundation, or deep pile foundations. In these conditions, strip or pad foundations would require significant excavation.

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

	* Bentonite.		* Bentonite.
	* Bulk filling materials.		* Bulk filling materials.
		+	* Colluvium.
	* Excavation.		* Excavation.
	* Geophysical survey.		* Geophysical survey.
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	* Types of soil.		* Types of soil.

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

Designing Buildings at 05:32, 17 May 2018

2018-05-17T05:32:54Z

← Older revision		Revision as of 05:32, 17 May 2018
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−	Alluvium is loose soil or sediments (~~e.g.~~ clay, silt, sand, gravel) that is eroded and carried in suspension by flood or river water before being deposited. The material of alluvium is ~~often~~ unconsolidated, i.e. not formed together into a solid rock, and ~~is re-shaped~~ by ~~the~~ water ~~in some way~~ before being deposited when the water slows down.	+	Alluvium is loose soil or sediments (such as clay, silt, sand, gravel and so on) that is eroded and carried in suspension by flood or river water before being deposited. The material of alluvium is may be unconsolidated, i.e. not formed together into solid rock, and can by picked up or eroded and carried away by moving water before being deposited elsewhere when the water flow slows down. Where the loose alluvial material is consolidated into a stone-like material (or lithological unit), this is known as lithification.

−	The fine-grained fertile soil that is deposited by water that flows over flood plains or river beds is known as alluvial soil~~. Lithification is the process whereby the loose alluvial material is cemented into a stone-like material (or lithological unit). This is called an alluvial deposit~~.	+	The fine-grained fertile soil that is deposited by water that flows over flood plains or river beds is known as alluvial soil.

	Some of the characteristics of alluvial soils include:		Some of the characteristics of alluvial soils include:
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	* Drainage can vary from very poor to free.		* Drainage can vary from very poor to free.
	* The texture of the soil can vary both vertically and laterally.		* The texture of the soil can vary both vertically and laterally.
−	* ~~May often~~ contain a large amount of organic matter.	+	* It may contain a large amount of organic matter.

−	The presence of alluvial deposits may mean that the ground conditions are poor and so require the construction of a raft foundation. In these conditions, strip or pad foundations would require significant excavation.	+	The presence of alluvial deposits may mean that the ground conditions are poor and so can require the construction of a raft foundation, or deep pile foundations. In these conditions, strip or pad foundations would require significant excavation.

	= Find out more =		= Find out more =

Editor: Created page with "Alluvium is loose soil or sediments (e.g. clay, silt, sand, gravel) that is eroded and carried in suspension by flood or river water before being deposited. The material of alluv..."

2018-04-23T15:16:33Z

Created page with "Alluvium is loose soil or sediments (e.g. clay, silt, sand, gravel) that is eroded and carried in suspension by flood or river water before being deposited. The material of alluv..."

New page

Alluvium is loose soil or sediments (e.g. clay, silt, sand, gravel) that is eroded and carried in suspension by flood or river water before being deposited. The material of alluvium is often unconsolidated, i.e. not formed together into a solid rock, and is re-shaped by the water in some way before being deposited when the water slows down.

The fine-grained fertile soil that is deposited by water that flows over flood plains or river beds is known as alluvial soil. Lithification is the process whereby the loose alluvial material is cemented into a stone-like material (or lithological unit). This is called an alluvial deposit.

Some of the characteristics of alluvial soils include:

* The soil morphology will vary according to the age of the alluvial deposit and how it was formed.
* The textural range of the soil can vary widely from gravel to silty clay.
* Drainage can vary from very poor to free.
* The texture of the soil can vary both vertically and laterally.
* May often contain a large amount of organic matter.

The presence of alluvial deposits may mean that the ground conditions are poor and so require the construction of a raft foundation. In these conditions, strip or pad foundations would require significant excavation.

= Find out more =

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

* Bentonite.
* Bulk filling materials.
* Excavation.
* Geophysical survey.
* Ground conditions.
* Grouting in civil engineering.
* Insitu testing of soils.
* Soil survey.
* Subsoil.
* Topsoil.
* Types of soil.

[[Category:Products_/_components]]