Topsoil - Revision history

Designing Buildings at 07:59, 7 November 2020

2020-11-07T07:59:05Z

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	* What does in situ mean?		* What does in situ mean?

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

Designing Buildings at 11:55, 10 January 2019

2019-01-10T11:55:02Z

← Older revision		Revision as of 11:55, 10 January 2019
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−	Topsoil is the ~~first,~~ upper layer of soil, typically ~~measuring~~ between 5 - 20 cm (2 - 8 inches) deep. It can also be measured as the depth from the surface level to the subsoil, i.e. the distance to the first densely-packed layer of soil.	+	Topsoil is the upper layer of a soil profile, usually darker in colour (because of its higher organic matter content) and more fertile than subsoil, and which is a product of natural<br />
		+	biological and environmental processes. Ref The HS2 London-West Midlands Environmental Statement, Glossary of terms and list of abbreviations, DETR 2013.
		+
		+	Topsoil is typically between 5 - 20 cm (2 - 8 inches) deep. It can also be measured as the depth from the surface level to the subsoil, i.e. the distance to the first densely-packed layer of soil.

	The topsoil is where the majority of the biological soil activity occurs, as it contains the highest concentration of organic matter and microorganisms, due to decomposition from animals, plants, and so on. The topsoil contains the highest concentration of plant roots, as plants acquire the majority of their nutrients from the topsoil layer.		The topsoil is where the majority of the biological soil activity occurs, as it contains the highest concentration of organic matter and microorganisms, due to decomposition from animals, plants, and so on. The topsoil contains the highest concentration of plant roots, as plants acquire the majority of their nutrients from the topsoil layer.
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	* What does in situ mean?		* What does in situ mean?

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

Editor at 14:18, 27 April 2018

2018-04-27T14:18:05Z

← Older revision		Revision as of 14:18, 27 April 2018
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	* The importance of soil analysis.		* The importance of soil analysis.
	* Types of soil.		* Types of soil.
		+	* What does in situ mean?

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

Editor at 15:25, 23 April 2018

2018-04-23T15:25:14Z

← Older revision		Revision as of 15:25, 23 April 2018
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	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===

		+	* Alluvium.
	* Bearing capacity.		* Bearing capacity.
	* Geophysical survey.		* Geophysical survey.

Designing Buildings at 18:18, 1 March 2018

2018-03-01T18:18:12Z

← Older revision		Revision as of 18:18, 1 March 2018
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	* Air.		* Air.

−	The soil’s strength and bearing capacity depends on its skeletal structure and decreases with the presence of organic matter. Construction work can lead to the organic matter of topsoil condensing and settling in different ways, such as in roadbeds and foundations.	+	The soil’s strength and bearing capacity depends on its skeletal structure and decreases with the presence of organic matter.
		+
		+	Water run-off results in minerals from the topsoil migrating down into the subsoil which can lead to mineral deficiencies in the topsoil. The knock-on effect of this is that roots have to dig deeper for nutrients. During construction it can be necessary to strip topsoil, although it should be considered that by exposing the subsoil, the rate of erosion of soil minerals increases.
		+
		+	Construction work can lead to the organic matter of topsoil condensing and settling in different ways, such as in roadbeds and foundations.

	= Find out more =		= Find out more =

Designing Buildings at 18:14, 1 March 2018

2018-03-01T18:14:57Z

← Older revision		Revision as of 18:14, 1 March 2018
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−	Topsoil is the first, upper layer of soil, typically measuring between 5 - 20 cm (2 - 8 inches). It can also be measured as the depth from the surface level to the subsoil, i.e. the first densely-packed layer of soil.	+	Topsoil is the first, upper layer of soil, typically measuring between 5 - 20 cm (2 - 8 inches) deep. It can also be measured as the depth from the surface level to the subsoil, i.e. the distance to the first densely-packed layer of soil.

	The topsoil is where the majority of the biological soil activity occurs, as it contains the highest concentration of organic matter and microorganisms, due to decomposition from animals, plants, and so on. The topsoil contains the highest concentration of plant roots, as plants acquire the majority of their nutrients from the topsoil layer.		The topsoil is where the majority of the biological soil activity occurs, as it contains the highest concentration of organic matter and microorganisms, due to decomposition from animals, plants, and so on. The topsoil contains the highest concentration of plant roots, as plants acquire the majority of their nutrients from the topsoil layer.

−	The elements that make up ~~soil~~ composition are:	+	The main elements that make up topsoil composition are:

	* Organic matter.		* Organic matter.

Editor: Created page with "Topsoil is the first, upper layer of soil, typically measuring between 5 - 20 cm (2 - 8 inches). It can also be measured as the depth from the surface level to the subsoil, i.e. ..."

2018-03-01T13:13:59Z

Created page with "Topsoil is the first, upper layer of soil, typically measuring between 5 - 20 cm (2 - 8 inches). It can also be measured as the depth from the surface level to the subsoil, i.e. ..."

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Topsoil is the first, upper layer of soil, typically measuring between 5 - 20 cm (2 - 8 inches). It can also be measured as the depth from the surface level to the subsoil, i.e. the first densely-packed layer of soil.

The topsoil is where the majority of the biological soil activity occurs, as it contains the highest concentration of organic matter and microorganisms, due to decomposition from animals, plants, and so on. The topsoil contains the highest concentration of plant roots, as plants acquire the majority of their nutrients from the topsoil layer.

The elements that make up soil composition are:

* Organic matter.
* Mineral particles.
* Water.
* Air.

The soil’s strength and bearing capacity depends on its skeletal structure and decreases with the presence of organic matter. Construction work can lead to the organic matter of topsoil condensing and settling in different ways, such as in roadbeds and foundations.

= Find out more =

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

* Bearing capacity.
* Geophysical survey.
* Groundwater.
* Ground heave.
* Insitu testing of soils.
* Soil survey.
* Subsoil.
* The importance of soil analysis.
* Types of soil.

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