Piling mat - Revision history

Designing Buildings at 07:52, 23 September 2020

2020-09-23T07:52:53Z

← Older revision		Revision as of 07:52, 23 September 2020
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	{\|		{\|
−	\| [[File:~~Piled raft foundation~~.jpg]]	+	\| [[File:Piled_raft_foundation.jpg\|link=File:Piled_raft_foundation.jpg]]
−	\| [[File:Piledriver.jpg]]	+	\| [[File:Piledriver.jpg\|link=File:Piledriver.jpg]]
	\|}		\|}

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	* Working platforms for tracked plant: good practice guide to the design, installation, maintenance and repair of ground-supported working platforms.		* Working platforms for tracked plant: good practice guide to the design, installation, maintenance and repair of ground-supported working platforms.

−	[[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 16:32, 24 January 2018

2018-01-24T16:32:20Z

← Older revision		Revision as of 16:32, 24 January 2018
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−	Pile foundations are a type of deep foundation ~~that is~~ principally used to transfer loads from superstructures, through weak, compressible strata or water onto stronger, more compact, less compressible and stiffer soil or rock at depth. They are formed by long, slender, columnar elements typically made from steel or reinforced concrete, or sometimes timber.	+	Pile foundations are a type of deep foundation, principally used to transfer loads from superstructures, through weak, compressible strata or water onto stronger, more compact, less compressible and stiffer soil or rock at depth. They are formed by long, slender, columnar elements typically made from steel or reinforced concrete, or sometimes timber.

−	~~A piling mat is a type of working platform used for piling rigs to travel and operate on, providing a stable base on which they can move around the site~~.	+	They are constructed by displacement (driven) or replacement (bored).

−	~~The design of piling mats will depend on the ground conditions and the piling equipment being used, as well as the rig loadings (which typically range from 5 to over 150 tonnes)~~. If a piling mat is too deep it will be incurring unnecessary costs, whilst if it is too shallow it may need time- and cost-inefficient repairs. A soft spot in the surface of just 1 sq. m, can be enough to unbalance the rig.	+	{\|
		+	\| [[File:Piled raft foundation.jpg]]
		+	\| [[File:Piledriver.jpg]]
		+	\|}

−	Typically, the top of a piling mat will be around ~~640~~ mm above the pile cut-off level, and it will extend beyond the outermost pile positions by at least 2 m. The edges of the mat and the ramps onto and off it should be clearly marked.	+	A piling mat is a type of working platform used for piling rigs to travel on, providing a stable base on which they can move around the site and operate.
		+
		+	The design of piling mats will depend on the ground conditions and the piling equipment being used, as well as the rig loadings (which typically range from 5 to over 150 tonnes). If a piling mat is too deep it will be incurring unnecessary costs, whilst if it is too shallow it may need time- and cost-inefficient repairs. A soft spot in the surface of just 1 sq. m, can be enough to unbalance a rig.
		+
		+	Typically, the top of a piling mat will be around 600 mm above the pile cut-off level, and it will extend beyond the outermost pile positions by at least 2 m. The edges of the mat and the ramps onto and off it should be clearly marked.

	The most suitable materials for piling mats are generally well-graded natural gravels, clean-crushed concrete, crushed hard rock, and so on. As long as it has rebar and timber removed, graded recycled demolition material can also be used. Mats are rolled and compacted in layers. The mat should be free-draining to prevent any build-up of water or slurry on its surface. On sites with a high water table, a separating membrane may be positioned between the mat and the sub-grade to prevent the upward migration of fine-grained soils into the mat.		The most suitable materials for piling mats are generally well-graded natural gravels, clean-crushed concrete, crushed hard rock, and so on. As long as it has rebar and timber removed, graded recycled demolition material can also be used. Mats are rolled and compacted in layers. The mat should be free-draining to prevent any build-up of water or slurry on its surface. On sites with a high water table, a separating membrane may be positioned between the mat and the sub-grade to prevent the upward migration of fine-grained soils into the mat.
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	* Working platforms for tracked plant: good practice guide to the design, installation, maintenance and repair of ground-supported working platforms.		* Working platforms for tracked plant: good practice guide to the design, installation, maintenance and repair of ground-supported working platforms.

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

Designing Buildings at 16:27, 24 January 2018

2018-01-24T16:27:48Z

← Older revision		Revision as of 16:27, 24 January 2018
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−	~~Piles~~ are formed by long, slender, columnar elements typically made from steel or reinforced concrete, or sometimes timber~~. The type of pile will determine the pile driving equipment that is most suitable~~.	+	Pile foundations are a type of deep foundation that is principally used to transfer loads from superstructures, through weak, compressible strata or water onto stronger, more compact, less compressible and stiffer soil or rock at depth. They are formed by long, slender, columnar elements typically made from steel or reinforced concrete, or sometimes timber.

−	A piling mat is a type of working platform ~~required~~ for a piling ~~rig~~ to travel and operate on~~. It must be designed to be able to resist the forces from the piling rig~~, which can ~~range in weights from 5 to over 150 tonnes~~.	+	A piling mat is a type of working platform used for piling rigs to travel and operate on, providing a stable base on which they can move around the site.

−	The design of ~~the~~ piling ~~mat must consider~~ the ground conditions and the piling equipment being used, as well as the rig loadings. If ~~the~~ piling mat is ~~set~~ too deep it will ~~likely incur~~ unnecessary costs, ~~whereas~~ if it is ~~set~~ too shallow ~~then~~ it may ~~result in inadequate performance which requires~~ time- and cost-inefficient repairs. ~~In addition, a~~ soft spot in the surface of ~~only around~~ 1 sq. m, can be enough to unbalance the rig.	+	The design of piling mats will depend on the ground conditions and the piling equipment being used, as well as the rig loadings (which typically range from 5 to over 150 tonnes). If a piling mat is too deep it will be incurring unnecessary costs, whilst if it is too shallow it may need time- and cost-inefficient repairs. A soft spot in the surface of just 1 sq. m, can be enough to unbalance the rig.

−	~~A recommended height of~~ the top of ~~the~~ piling mat is around 640 mm above the pile cut-off level, as by being able to place steel flush with the mat, the site can be kept relatively unobstructed, which reduces the risk of pile damage. Piling rigs must be free to move around a site on a stable platform with ease, as wasteful standing time can often be costly. The mat should typically extend beyond the outermost pile positions ~~to a minimum of~~ 2 m. The edges of the mat and the ramps onto and off it should be clearly marked.	+	Typically, the top of a piling mat will be around 640 mm above the pile cut-off level, and it will extend beyond the outermost pile positions by at least 2 m. The edges of the mat and the ramps onto and off it should be clearly marked.

−	The most suitable materials ~~to use~~ for a piling ~~mat~~ are well-graded natural gravels, clean-crushed concrete, crushed hard rock, and so on. As long as it has rebar and timber removed, graded recycled demolition material can also be used. Mats are rolled and compacted in layers. The mat should be free-draining to prevent any build-up of water or slurry on its surface ~~which can result in damage over time~~. On sites with a high water table, a separating membrane positioned between the mat and the sub-grade ~~can be used~~ to prevent the upward migration of fine-grained soils into the mat.	+	The most suitable materials for piling mats are generally well-graded natural gravels, clean-crushed concrete, crushed hard rock, and so on. As long as it has rebar and timber removed, graded recycled demolition material can also be used. Mats are rolled and compacted in layers. The mat should be free-draining to prevent any build-up of water or slurry on its surface. On sites with a high water table, a separating membrane may be positioned between the mat and the sub-grade to prevent the upward migration of fine-grained soils into the mat.

−	~~The piling mat~~ should be inspected daily to ensure ~~it is kept~~ in proper working condition. If any excavations, trenches or holes ~~are~~ formed in the surface, they must be properly backfilled to ensure they are as stable as the rest of the mat.	+	Piling mats should be inspected daily to ensure they are in proper working condition. If any excavations, trenches or holes have formed in the surface, they must be properly backfilled to ensure they are as stable as the rest of the mat.

	It is mandatory that every site with an operational piling rig has a Working Platform Certificate (WPC) that states the piling mat has been correctly designed and installed. The WPC must be signed by the principal contractor and provided for the piling contractor before any piling commences on the site.		It is mandatory that every site with an operational piling rig has a Working Platform Certificate (WPC) that states the piling mat has been correctly designed and installed. The WPC must be signed by the principal contractor and provided for the piling contractor before any piling commences on the site.

Editor: Created page with "Piles are formed by long, slender, columnar elements typically made from steel or reinforced concrete, or sometimes timber. The type of pile will determine the pile driving equip..."

2018-01-22T14:35:35Z

Created page with "Piles are formed by long, slender, columnar elements typically made from steel or reinforced concrete, or sometimes timber. The type of pile will determine the pile driving equip..."

New page

Piles are formed by long, slender, columnar elements typically made from steel or reinforced concrete, or sometimes timber. The type of pile will determine the pile driving equipment that is most suitable.

A piling mat is a type of working platform required for a piling rig to travel and operate on. It must be designed to be able to resist the forces from the piling rig, which can range in weights from 5 to over 150 tonnes.

The design of the piling mat must consider the ground conditions and the piling equipment being used, as well as the rig loadings. If the piling mat is set too deep it will likely incur unnecessary costs, whereas if it is set too shallow then it may result in inadequate performance which requires time- and cost-inefficient repairs. In addition, a soft spot in the surface of only around 1 sq. m, can be enough to unbalance the rig.

A recommended height of the top of the piling mat is around 640 mm above the pile cut-off level, as by being able to place steel flush with the mat, the site can be kept relatively unobstructed, which reduces the risk of pile damage. Piling rigs must be free to move around a site on a stable platform with ease, as wasteful standing time can often be costly. The mat should typically extend beyond the outermost pile positions to a minimum of 2 m. The edges of the mat and the ramps onto and off it should be clearly marked.

The most suitable materials to use for a piling mat are well-graded natural gravels, clean-crushed concrete, crushed hard rock, and so on. As long as it has rebar and timber removed, graded recycled demolition material can also be used. Mats are rolled and compacted in layers. The mat should be free-draining to prevent any build-up of water or slurry on its surface which can result in damage over time. On sites with a high water table, a separating membrane positioned between the mat and the sub-grade can be used to prevent the upward migration of fine-grained soils into the mat.

The piling mat should be inspected daily to ensure it is kept in proper working condition. If any excavations, trenches or holes are formed in the surface, they must be properly backfilled to ensure they are as stable as the rest of the mat.

It is mandatory that every site with an operational piling rig has a Working Platform Certificate (WPC) that states the piling mat has been correctly designed and installed. The WPC must be signed by the principal contractor and provided for the piling contractor before any piling commences on the site.

= Find out more =

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

* Bored piles.
* Driven piles.
* Groundworks.
* Pile foundations.
* Piling equipment.
* Tension piles.
* Working platform.
* Working platforms for tracked plant: good practice guide to the design, installation, maintenance and repair of ground-supported working platforms.

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