Friction piles - Revision history

Designing Buildings at 09:11, 23 November 2022

2022-11-23T09:11:47Z

← Older revision		Revision as of 09:11, 23 November 2022
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	For more information see: End-bearing piles.		For more information see: End-bearing piles.

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

	* Bored piles.		* Bored piles.
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	* Sheet piles.		* Sheet piles.
	* Tension piles.		* Tension piles.
		+	* Types of pile foundation.

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

Designing Buildings at 08:28, 21 September 2020

2020-09-21T08:28:15Z

← Older revision		Revision as of 08:28, 21 September 2020
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	* Tension piles.		* Tension piles.

−	[[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 10:53, 17 April 2018

2018-04-17T10:53:10Z

← Older revision		Revision as of 10:53, 17 April 2018
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	Friction piles are in contrast to end-bearing piles which develop most of their load-bearing capacity at the toe of the pile, bearing on a hard layer of rock or very dense soil and gravel.		Friction piles are in contrast to end-bearing piles which develop most of their load-bearing capacity at the toe of the pile, bearing on a hard layer of rock or very dense soil and gravel.

−	For more information see: End-bearing ~~pile~~.	+	For more information see: End-bearing piles.

	= Find out more =		= Find out more =
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	* Tension piles.		* Tension piles.

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

Designing Buildings at 10:52, 17 April 2018

2018-04-17T10:52:50Z

← Older revision		Revision as of 10:52, 17 April 2018
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−	~~Pile foundations are deep foundations. They are formed by long, slender~~, ~~columnar elements typically made from steel~~ or ~~reinforced concrete~~, or ~~sometimes timber. A foundation is described as 'piled' when its depth is more than three times its breadth (Atkinson, 2007)~~.	+	Foundations provide support for structures, transferring their load to layers of soil or rock that have sufficient bearing capacity and suitable settlement characteristics to support them. Very broadly, foundations can be categorised as shallow foundations or deep foundations.

−	Pile foundations are ~~principally used to transfer the loads from superstructures~~, ~~through weak~~, ~~compressible strata or water onto stronger~~, ~~more compact, less compressible and stiffer soil~~ or ~~rock at depth~~, ~~increasing the effective size of a foundation and resisting horizontal loads~~. ~~They are typically used for large structures, and in situations where soil~~ is ~~not suitable to prevent excessive settlement~~.	+	Pile foundations are a type of deep foundation, formed by long, slender, columnar elements typically made from steel or reinforced concrete, or sometimes timber. A foundation is described as 'piled' when its depth is more than three times its breadth.

−	~~Friction (or floating) piles develop most of the pile-bearing capacity by shear stresses along the sides of~~ the ~~pile~~, and ~~are suitable where harder layers are too deep. The pile transmits the load to surrounding~~ soil ~~by adhesion~~ or ~~friction between the surface of the pile and soil, which in effect lowers the bulb of pressure~~. ~~In other words~~, ~~the whole surface of the pile (cylindrical~~ in ~~shape) works~~ to ~~transfer the forces to the soil~~.	+	Pile foundations are principally used to transfer the loads from superstructures, through weak, compressible strata or water onto stronger, more compact, less compressible and stiffer soil or rock at depth. They are typically used for large structures, and in situations where soil may be subject to excessive settlement.

−	~~To gain a better understanding, consider a nail that is driven into a piece~~ of ~~timber~~. The ~~nail becomes more secure~~ and ~~tightly fastened into~~ the ~~timber~~, the ~~further~~ in ~~that it is driven. A similar process is at play with friction piles~~.	+	Friction (or floating) piles develop most of the pile-bearing capacity by shear stresses along the sides of the pile, and are suitable where harder layers are too deep to reach economically. The pile transmits the load to surrounding soil by adhesion or friction between the surface of the pile and soil, which in effect lowers the bulb of pressure. In other words, the whole surface of the pile (cylindrical in shape) works to transfer the forces to the soil.

−	The greater the embedment depth in the ground, the more load the pile can support – the load-bearing capacity of the pile is directly proportionate to its length.	+	To gain a better understanding, consider a nail that is driven into a piece of timber. The nail becomes more secure and tightly fastened into the timber, the further in that it is driven. The greater the embedment depth in the ground, the more load the pile can support – the load-bearing capacity of the pile is directly proportionate to its length.

−	~~They can be used where it is not possible, either physically or economically,~~ to ~~use an~~ end-bearing pile ~~to reach much harder strata~~, ~~but instead are driven for some distance into~~ a ~~penetrable~~ soil. ~~They can also be used in combination with end~~-bearing ~~piles~~.	+	Friction piles are in contrast to end-bearing piles which develop most of their load-bearing capacity at the toe of the pile, bearing on a hard layer of rock or very dense soil and gravel.
		+
		+	For more information see: End-bearing pile.

	= Find out more =		= Find out more =

Designing Buildings at 10:49, 17 April 2018

2018-04-17T10:49:11Z

← Older revision		Revision as of 10:49, 17 April 2018
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	Pile foundations are principally used to transfer the loads from superstructures, through weak, compressible strata or water onto stronger, more compact, less compressible and stiffer soil or rock at depth, increasing the effective size of a foundation and resisting horizontal loads. They are typically used for large structures, and in situations where soil is not suitable to prevent excessive settlement.		Pile foundations are principally used to transfer the loads from superstructures, through weak, compressible strata or water onto stronger, more compact, less compressible and stiffer soil or rock at depth, increasing the effective size of a foundation and resisting horizontal loads. They are typically used for large structures, and in situations where soil is not suitable to prevent excessive settlement.
−
−	~~Friction piles are those that have been classified by their basic design function as opposed to their method of construction (driven or bored).~~

	Friction (or floating) piles develop most of the pile-bearing capacity by shear stresses along the sides of the pile, and are suitable where harder layers are too deep. The pile transmits the load to surrounding soil by adhesion or friction between the surface of the pile and soil, which in effect lowers the bulb of pressure. In other words, the whole surface of the pile (cylindrical in shape) works to transfer the forces to the soil.		Friction (or floating) piles develop most of the pile-bearing capacity by shear stresses along the sides of the pile, and are suitable where harder layers are too deep. The pile transmits the load to surrounding soil by adhesion or friction between the surface of the pile and soil, which in effect lowers the bulb of pressure. In other words, the whole surface of the pile (cylindrical in shape) works to transfer the forces to the soil.

Editor at 15:54, 8 March 2018

2018-03-08T15:54:23Z

← Older revision		Revision as of 15:54, 8 March 2018
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	* Pile foundations.		* Pile foundations.
	* Piling equipment.		* Piling equipment.
−	* Screw pile ~~foundation~~.	+	* Screw pile foundations.
	* Sheet piles.		* Sheet piles.
	* Tension piles.		* Tension piles.

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

Editor: Created page with "Pile foundations are deep foundations. They are formed by long, slender, columnar elements typically made from steel or reinforced concrete, or sometimes timber. A foundation is ..."

2018-03-08T15:48:31Z

Created page with "Pile foundations are deep foundations. They are formed by long, slender, columnar elements typically made from steel or reinforced concrete, or sometimes timber. A foundation is ..."

New page

Pile foundations are deep foundations. They are formed by long, slender, columnar elements typically made from steel or reinforced concrete, or sometimes timber. A foundation is described as 'piled' when its depth is more than three times its breadth (Atkinson, 2007).

Pile foundations are principally used to transfer the loads from superstructures, through weak, compressible strata or water onto stronger, more compact, less compressible and stiffer soil or rock at depth, increasing the effective size of a foundation and resisting horizontal loads. They are typically used for large structures, and in situations where soil is not suitable to prevent excessive settlement.

Friction piles are those that have been classified by their basic design function as opposed to their method of construction (driven or bored).

Friction (or floating) piles develop most of the pile-bearing capacity by shear stresses along the sides of the pile, and are suitable where harder layers are too deep. The pile transmits the load to surrounding soil by adhesion or friction between the surface of the pile and soil, which in effect lowers the bulb of pressure. In other words, the whole surface of the pile (cylindrical in shape) works to transfer the forces to the soil.

To gain a better understanding, consider a nail that is driven into a piece of timber. The nail becomes more secure and tightly fastened into the timber, the further in that it is driven. A similar process is at play with friction piles.

The greater the embedment depth in the ground, the more load the pile can support – the load-bearing capacity of the pile is directly proportionate to its length.

They can be used where it is not possible, either physically or economically, to use an end-bearing pile to reach much harder strata, but instead are driven for some distance into a penetrable soil. They can also be used in combination with end-bearing piles.

= Find out more =

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

* Bored piles.
* Building foundations.
* Caisson.
* Continuous flight auger piles.
* Driven piles.
* End-bearing piles.
* Geothermal pile foundations.
* How deep should foundations be?
* Pile foundations.
* Piling equipment.
* Screw pile foundation.
* Sheet piles.
* Tension piles.

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