Basement excavation - Revision history

Editor at 20:23, 27 January 2022

2022-01-27T20:23:33Z

← Older revision		Revision as of 20:23, 27 January 2022
Line 94:		Line 94:
	* Planning (Subterranean Development) Bill.		* Planning (Subterranean Development) Bill.
	* Right of support.		* Right of support.
		+	* Safe room.
	* Substructure.		* Substructure.
	* Trench.		* Trench.

Editor: Reverted edits by 212.219.11.94 (talk) to last revision by Editor

2022-01-14T11:51:11Z

Reverted edits by 212.219.11.94 (talk) to last revision by Editor

← Older revision		Revision as of 11:51, 14 January 2022
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	‘A storey with a floor which at some point is more than 1,200 mm below the highest level of ground adjacent to the outside walls.’		‘A storey with a floor which at some point is more than 1,200 mm below the highest level of ground adjacent to the outside walls.’

−	Basements can be ~~construed~~ using brick or concrete block, poured concrete, pre-cast concrete, or even treated wood.	+	Basements can be constructed using brick or concrete block, poured concrete, pre-cast concrete, or even treated wood.

	Basements generally become more expensive as the depth increases. However, in prime locations, the cost of land may justify multi-story basements or even below-ground parking garages. This is becoming increasingly common in central London where even larger ‘iceberg basements’ have provoked much controversy as they can cause significant disruption to and disturbance of neighbours.		Basements generally become more expensive as the depth increases. However, in prime locations, the cost of land may justify multi-story basements or even below-ground parking garages. This is becoming increasingly common in central London where even larger ‘iceberg basements’ have provoked much controversy as they can cause significant disruption to and disturbance of neighbours.

212.219.11.94 at 11:49, 14 January 2022

2022-01-14T11:49:39Z

← Older revision		Revision as of 11:49, 14 January 2022
Line 9:		Line 9:
	‘A storey with a floor which at some point is more than 1,200 mm below the highest level of ground adjacent to the outside walls.’		‘A storey with a floor which at some point is more than 1,200 mm below the highest level of ground adjacent to the outside walls.’

−	Basements can be ~~constructed~~ using brick or concrete block, poured concrete, pre-cast concrete, or even treated wood.	+	Basements can be construed using brick or concrete block, poured concrete, pre-cast concrete, or even treated wood.

	Basements generally become more expensive as the depth increases. However, in prime locations, the cost of land may justify multi-story basements or even below-ground parking garages. This is becoming increasingly common in central London where even larger ‘iceberg basements’ have provoked much controversy as they can cause significant disruption to and disturbance of neighbours.		Basements generally become more expensive as the depth increases. However, in prime locations, the cost of land may justify multi-story basements or even below-ground parking garages. This is becoming increasingly common in central London where even larger ‘iceberg basements’ have provoked much controversy as they can cause significant disruption to and disturbance of neighbours.

Editor at 18:43, 4 November 2021

2021-11-04T18:43:09Z

← Older revision		Revision as of 18:43, 4 November 2021
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	* Failure of waterproofing, insurance, and guarantees.		* Failure of waterproofing, insurance, and guarantees.

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

	* Basements in buildings.		* Basements in buildings.
Line 91:		Line 91:
	* Excavation.		* Excavation.
	* Party Wall Act.		* Party Wall Act.
		+	* Pile wall.
	* Planning (Subterranean Development) Bill.		* Planning (Subterranean Development) Bill.
	* Right of support.		* Right of support.

Designing Buildings: Reverted edits by 86.0.136.69 (talk) to last revision by Designing Buildings

2020-09-27T18:42:28Z

Reverted edits by 86.0.136.69 (talk) to last revision by Designing Buildings

← Older revision		Revision as of 18:42, 27 September 2020
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	A basement is part of a building that is either partially or completely below ground level. Approved document B of the UK building regulations, Fire Safety, Volume 1 Dwellinghouses, defines a ‘basement storey’ as:		A basement is part of a building that is either partially or completely below ground level. Approved document B of the UK building regulations, Fire Safety, Volume 1 Dwellinghouses, defines a ‘basement storey’ as:
−
−	~~An underground construction ideal for the safe storage of children, corpses, and Tom Cruise with his teenage children that need to hide from the tripods.~~

	‘A storey with a floor which at some point is more than 1,200 mm below the highest level of ground adjacent to the outside walls.’		‘A storey with a floor which at some point is more than 1,200 mm below the highest level of ground adjacent to the outside walls.’

86.0.136.69 at 17:24, 27 September 2020

2020-09-27T17:24:25Z

← Older revision		Revision as of 17:24, 27 September 2020
Line 6:		Line 6:

	A basement is part of a building that is either partially or completely below ground level. Approved document B of the UK building regulations, Fire Safety, Volume 1 Dwellinghouses, defines a ‘basement storey’ as:		A basement is part of a building that is either partially or completely below ground level. Approved document B of the UK building regulations, Fire Safety, Volume 1 Dwellinghouses, defines a ‘basement storey’ as:
		+
		+	An underground construction ideal for the safe storage of children, corpses, and Tom Cruise with his teenage children that need to hide from the tripods.

	‘A storey with a floor which at some point is more than 1,200 mm below the highest level of ground adjacent to the outside walls.’		‘A storey with a floor which at some point is more than 1,200 mm below the highest level of ground adjacent to the outside walls.’

Designing Buildings at 08:34, 4 September 2020

2020-09-04T08:34:39Z

← Older revision		Revision as of 08:34, 4 September 2020
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	* [http://www.about-home-design.com/ About Home Design]		* [http://www.about-home-design.com/ About Home Design]

−	[[Category:Articles_needing_more_work]] [[Category:Construction_techniques]] [[Category:Design]] [[Category:Property_development]]	+	[[Category:Articles_needing_more_work]] [[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Construction_techniques]] [[Category:Design]] [[Category:Property_development]]

Bwhite8727 at 15:56, 5 June 2020

2020-06-05T15:56:53Z

← Older revision		Revision as of 15:56, 5 June 2020
Line 11:		Line 11:
	Basements can be constructed using brick or concrete block, poured concrete, pre-cast concrete, or even treated wood.		Basements can be constructed using brick or concrete block, poured concrete, pre-cast concrete, or even treated wood.

−	Basements generally become more expensive as the depth increases. However, in prime locations, the cost of land may justify multi-story basements or even below ground parking garages. This is becoming increasingly common in central London where even larger ‘iceberg basements’ have provoked much controversy as they can cause significant disruption to and disturbance of neighbours.	+	Basements generally become more expensive as the depth increases. However, in prime locations, the cost of land may justify multi-story basements or even below-ground parking garages. This is becoming increasingly common in central London where even larger ‘iceberg basements’ have provoked much controversy as they can cause significant disruption to and disturbance of neighbours.

	See Basement Excavation (Restriction of Permitted Development) Bill and Planning (Subterranean Development) Bill.		See Basement Excavation (Restriction of Permitted Development) Bill and Planning (Subterranean Development) Bill.
Line 39:		Line 39:
	=== Precast panels ===		=== Precast panels ===

−	Precast concrete panels can be transported to site and assembled on footings. This method is not as common, but can be economical where there are multiple basements being constructed at the same time. If the joists between panels are not properly sealed then moisture can get trapped in the panels or penetrate to the interior and cause problems.	+	Precast concrete panels can be transported to the site and assembled on footings. This method is not as common but can be economical where there are multiple basements being constructed at the same time. If the joists between panels are not properly sealed then moisture can get trapped in the panels or penetrate to the interior and cause problems.

	= Waterproofing =		= Waterproofing =
Line 53:		Line 53:
	=== Structurally integral protection ===		=== Structurally integral protection ===

−	This is chemically-enhanced water resistant concrete which can be used in combination with a waterproof membrane.	+	This is chemically-enhanced water-resistant concrete which can be used in combination with a waterproof membrane.

	=== Drained cavity ===		=== Drained cavity ===
Line 61:		Line 61:
	= Insulation =		= Insulation =

−	As basements are surrounded by earth, their temperature has a tendency to remain fairly even throughout the year. There are several methods of insulating a basement, such as foam insulation, rigid insulation boards or fibreglass batts. These allow for the retention of heat inside the basement and the prevention of condensation on walls which will eventually lead to mould growth. It is particularly important that basements are properly ventilated as they may have a vapour-impermeable construction and are unlikely to have openable windows.	+	As basements are surrounded by earth, their temperature has a tendency to remain fairly even throughout the year. There are several methods of insulating a basement, such as foam insulation, rigid insulation boards, or fibreglass batts. These allow for the retention of heat inside the basement and the prevention of condensation on walls which will eventually lead to mould growth. It is particularly important that basements are properly ventilated as they may have a vapour-impermeable construction and are unlikely to have openable windows.

	Building services are likely to supply the basement from above, and drainage from the basement is likely to require pumping.		Building services are likely to supply the basement from above, and drainage from the basement is likely to require pumping.
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	= Risks =		= Risks =

−	Compared with building higher, building down can involve more risks. The complexity of basement excavation increases with the depth, a higher water table and a more congested site.	+	Compared with building higher, building down can involve more risks. The complexity of basement excavation increases with the depth, a higher water table, and a more congested site.

−	Prior to construction, good site information and soil tests are critical in terms of being able to adequately plan and forecast ~~for~~ potential difficulties that may arise.	+	Prior to construction, good site information and soil tests are critical in terms of being able to adequately plan and forecast potential difficulties that may arise.

	The most common risks are:		The most common risks are:
Line 78:		Line 78:
	* Boundary issues that may prove to be contentious, most commonly the foundations of nearby properties (see party wall act and right of support).		* Boundary issues that may prove to be contentious, most commonly the foundations of nearby properties (see party wall act and right of support).
	* Loads from adjacent buildings and roads.		* Loads from adjacent buildings and roads.
−	* Failure of waterproofing, insurance and guarantees.	+	* Failure of waterproofing, insurance, and guarantees.

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

Editor at 17:40, 30 August 2019

2019-08-30T17:40:57Z

← Older revision		Revision as of 17:40, 30 August 2019
Line 94:		Line 94:
	* Right of support.		* Right of support.
	* Substructure.		* Substructure.
		+	* Trench.
	* Underground car park.		* Underground car park.

Designing Buildings at 15:13, 28 November 2018

2018-11-28T15:13:10Z

← Older revision		Revision as of 15:13, 28 November 2018
Line 84:		Line 84:
	* Basements in buildings.		* Basements in buildings.
	* Basement Excavation (Restriction of Permitted Development) Bill.		* Basement Excavation (Restriction of Permitted Development) Bill.
		+	* Basement impact assessment.
	* Basement v cellar.		* Basement v cellar.
	* Basement waterproofing.		* Basement waterproofing.
Line 89:		Line 90:
	* Diaphragm wall.		* Diaphragm wall.
	* Excavation.		* Excavation.
−	* How to install an underfloor safe.
	* Party Wall Act.		* Party Wall Act.
−	* Planning permission.
	* Planning (Subterranean Development) Bill.		* Planning (Subterranean Development) Bill.
	* Right of support.		* Right of support.
	* Substructure.		* Substructure.
−	* Swimming pool construction.
	* Underground car park.		* Underground car park.
−	* Underpass construction.

−	=== External references ===	+	= External references =

	* Building – [http://www.building.co.uk/whole-life-costs-basements/3073920.article Whole life costs basements]		* Building – [http://www.building.co.uk/whole-life-costs-basements/3073920.article Whole life costs basements]