BREEAM Water consumption - Revision history

Designing Buildings at 07:28, 18 November 2020

2020-11-18T07:28:34Z

← Older revision		Revision as of 07:28, 18 November 2020
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	* Water consumption.		* Water consumption.

−	[[Category:BREEAM]]	+	[[Category:DCN_Guidance]] [[Category:BREEAM]]

Designing Buildings at 06:43, 26 March 2019

2019-03-26T06:43:10Z

← Older revision		Revision as of 06:43, 26 March 2019
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	--[[User:Sarah_Peterson\|Sarah Peterson]] 15:25, 20 Feb 2018 (BST)		--[[User:Sarah_Peterson\|Sarah Peterson]] 15:25, 20 Feb 2018 (BST)
		+
		+	= Related articles on Designing Buildings Wiki =
		+
		+	* Approved Document G.
		+	* Approved Document H.
		+	* Bathroom definition.
		+	* BREEAM Water efficient equipment
		+	* BREEAM Water leak detection
		+	* BREEAM Water monitoring
		+	* Earth closet.
		+	* ECA Water Scheme.
		+	* Lavatory.
		+	* Passive water efficiency measures.
		+	* Sanitary accommodation.
		+	* Sanitary pipework.
		+	* Water closet.
		+	* Water consumption.

	[[Category:BREEAM]]		[[Category:BREEAM]]

Designing Buildings at 06:41, 26 March 2019

2019-03-26T06:41:02Z

← Older revision		Revision as of 06:41, 26 March 2019
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	= Typical evidence =		= Typical evidence =

−	=== Design ~~Stage~~ ===	+	=== Design stage ===

−	BREEAM Wat 1 Calculator Tool	+	* BREEAM Wat 1 Calculator Tool.
		+	* Water Services drawings showing all water consuming equipment.
		+	* Sanitary ware schedule complete with flow rates and flush volumes.
		+	* Confirmation that any greywater or rainwater systems are specified and installed to the relevant Building Standards.

−	~~Water Services drawings showing all water consuming equipment~~	+	=== Post construction stage ===

−	Sanitary ware schedule complete with flow rates and flush volumes	+	* BREEAM Wat 1 Calculator Tool.
		+	* Water services drawings showing all water consuming equipment.
		+	* Sanitary ware schedule complete with flow rates and flush volumes.
		+	* Manufacturer’s literature for all sanitary ware complete with flow rates and flush volumes.
		+	* BREEAM assessor survey evidence.
		+	* Confirmation any greywater or rainwater systems are specified and installed to the relevant Building Standards.

−	~~Confirmation any grey or rain water systems are specified and installed to the relevant Building Standards.~~	+	=== Rainwater and greywater ===
−		+
−	~~=== Post Construction Stage ===~~	+
−		+
−	~~BREEAM Wat 1 Calculator Tool~~	+
−		+
−	~~Water Services drawings showing all water consuming equipment~~	+
−		+
−	~~Sanitary ware schedule complete with flow rates and flush volumes~~	+
−		+
−	~~Manufacturer’s literature for all sanitary ware complete with flow rates and flush volumes~~	+
−		+
−	~~BREEAM assessor survey evidence.~~	+
−		+
−	~~Confirmation any grey or rain water systems are specified and installed to the relevant Building Standards.~~	+
−		+
−	=== Rainwater and ~~Grey water~~ ===	+

	The requirements are:		The requirements are:
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	Rainwater: In accordance with BS8515 ‘intermediate approach’:		Rainwater: In accordance with BS8515 ‘intermediate approach’:

−	1. Collection area (m²)	+	* 1. Collection area (m²)
−		+	* 2. Yield co-efficient (%)
−	2. Yield co-efficient (%)	+	* 3. Hydraulic filter efficiency (%)
−		+	* 4. Rainfall (average mm/year).
−	3. Hydraulic filter efficiency (%)	+
−		+
−	4. Rainfall (average mm/year).	+

	Rainwater: In accordance with BS8515 ‘detailed approach’:		Rainwater: In accordance with BS8515 ‘detailed approach’:

−	1. Daily rainfall collection (litres)	+	* 1. Daily rainfall collection (litres)

	Greywater: in accordance with BS8525 :		Greywater: in accordance with BS8525 :

−	1. Manufacturer or system designer details.	+	* 1. Manufacturer or system designer details.
−		+	* 2. The percentage volume of waste water collected (and reused) from the following (where relevant); wash hand basins, showers, kitchen basins, dishwashers, baths, washing machines and sources of waste water from non-domestic components.
−	2. The percentage volume of waste water collected (and reused)from the following (where relevant); wash hand basins, showers, kitchen basins, dishwashers, baths, washing machines and sources of waste water from non-domestic components.	+

−	= Applicable ~~Schemes~~ =	+	= Applicable schemes =

	The guidelines collated in this ISD aim to support sustainable best practice in the topic described. This issue may apply in multiple BREEAM schemes covering different stages in the life of a building, different building types and different year versions. Some content may be generic but scheme nuances should also be taken into account. Refer to the comments below and related articles to this one to understand these nuances. See [[BREEAM_Issue_support_document_guidelines\|this document]] for further guidelines.		The guidelines collated in this ISD aim to support sustainable best practice in the topic described. This issue may apply in multiple BREEAM schemes covering different stages in the life of a building, different building types and different year versions. Some content may be generic but scheme nuances should also be taken into account. Refer to the comments below and related articles to this one to understand these nuances. See [[BREEAM_Issue_support_document_guidelines\|this document]] for further guidelines.

Designing Buildings at 06:38, 26 March 2019

2019-03-26T06:38:14Z

← Older revision		Revision as of 06:38, 26 March 2019
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	= Aim and benefits =		= Aim and benefits =

−	To reduce potable water demand through the installation of energy efficient sanitary fittings, rainwater collection and water recycling systems.	+	To reduce potable water demand through the installation of energy efficient sanitary fittings, rainwater collection and water recycling systems. Up to 5 credits are available plus an additional credit for exemplary performance.
−		+
−	Up to 5 credits are available plus an additional credit for exemplary performance.	+

	= When to consider =		= When to consider =
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	Design Stage RIBA Stages 3-4.		Design Stage RIBA Stages 3-4.

−	= Step by step guidance =	+	= Step-by-step guidance =

	Credit Wat 1 is an assessment of the efficiency of the buildings water consumption compared to a baseline performance standard.		Credit Wat 1 is an assessment of the efficiency of the buildings water consumption compared to a baseline performance standard.
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	* Washing machines (domestic and commercial or industrial sized)		* Washing machines (domestic and commercial or industrial sized)

−	If any ~~Rainwater~~ or ~~Greywater~~ recycling systems are proposed details must also be included.	+	If any rainwater or greywater recycling systems are proposed details must also be included.

	There are two methods to assess the credit:		There are two methods to assess the credit:
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	# Alternative Method		# Alternative Method

−	== Standard ~~Method~~ ==	+	== Standard method ==

	The standard approach is the default method for calculation.		The standard approach is the default method for calculation.
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	* Education		* Education

−	== Alternative ~~Method~~ ==	+	== Alternative method ==

	If the development does not meet the standard building types the alternative method can be used.		If the development does not meet the standard building types the alternative method can be used.
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	Note that the volumes quoted are maximums for that level and the % WC or urinal flushing demand is a minimum for that level.		Note that the volumes quoted are maximums for that level and the % WC or urinal flushing demand is a minimum for that level.

−	== Average ~~Flow Rate Calculator~~ ==	+	== Average flow rate calculator ==

	The Wat 1 Calculator tool has a tab to calculate the average flow if there are various specification types and flow rates for each component type across a development.		The Wat 1 Calculator tool has a tab to calculate the average flow if there are various specification types and flow rates for each component type across a development.

−	== Effective ~~Flush Volume~~ ==	+	== Effective flush volume ==

	For WC's this is calculated as follows:		For WC's this is calculated as follows:

−	The effective flush volume of a single flush WC is the volume of water used for one flush.	+	* The effective flush volume of a single flush WC is the volume of water used for one flush.
−		+	* The effective flush volume of a dual flush WC is the ratio of full flush to reduced flush.
−	The effective flush volume of a dual flush WC is the ratio of full flush to reduced flush.	+	* This is taken to be one full flush for every three reduced flushes for non-domestic buildings and one full flush for every two reduced flushes in domestic (residential) buildings/areas.
−		+
−	This is taken to be one full flush for every three reduced flushes for non-domestic buildings and one full flush for every two reduced flushes in domestic (residential) buildings/areas.	+

	The effective flush volume can therefore be calculated as follows, using a 6/4 litre dual flush volume WC as an example:		The effective flush volume can therefore be calculated as follows, using a 6/4 litre dual flush volume WC as an example:

−	Non-domestic:{(6 litre x 1)+(4 litre x 3)}/4 =4.5 litre effective flushing volume	+	* Non-domestic:{(6 litre x 1)+(4 litre x 3)}/4 =4.5 litre effective flushing volume.

	= Questions to ask while seeking compliance =		= Questions to ask while seeking compliance =

−	Can the credit be assessed using the standard approach or does the alternative method need to be used?	+	* Can the credit be assessed using the standard approach or does the alternative method need to be used?
−		+	* Has the sanitary ware been selected or specified yet?
−	Has the sanitary ware been selected or specified yet?	+	* Are there any rainwater or greywater recycling systems proposed?
−		+	* Who will be responsible for the specification of the sanitary ware including taps and showers?
−	Are there any ~~Rainwater~~ or ~~Greywater~~ recycling systems proposed?	+	* If detailed design has not been undertaken can target flow rates and flush volumes be set and included within a performance specification?
−		+
−	Who will be responsible for the specification of the sanitary ware including taps and showers?	+
−		+
−	If detailed design has not been undertaken can target flow rates and flush volumes be set and included within a performance specification?	+

	= Tools and resources =		= Tools and resources =

−	[https://www.designingbuildings.co.uk/wiki/BREEAM_Easy_wins#Water_Consumption Water consumption - Top 10 easy win issue]	+	* [https://www.designingbuildings.co.uk/wiki/BREEAM_Easy_wins#Water_Consumption Water consumption - Top 10 easy win issue]
−		+	* BREEAM Manual
−	BREEAM Manual	+	* BREEAM Wat 1 Calculator Tool
−		+
−	BREEAM Wat 1 Calculator Tool	+

	= Tips and best practice =		= Tips and best practice =
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	This BREEAM issue has minimum standards and at least 1 credit must be scored for this issue for Good, Very Good or an Excellent rating. 2 Credits must be achieved for an Outstanding rating.		This BREEAM issue has minimum standards and at least 1 credit must be scored for this issue for Good, Very Good or an Excellent rating. 2 Credits must be achieved for an Outstanding rating.

−	Due to the minimum standards this BREEAM issue should be reviewed as soon as possible to ensure the final BREEAM rating can be achieved.	+	Due to the minimum standards, this BREEAM issue should be reviewed as soon as possible to ensure the final BREEAM rating can be achieved.

	Depending on project procurement the design team may not select the sanitary ware and fittings. In this case it is recommended that the target flow rates and flush rates in order to achieve the required credits are detailed within a performance specification or contractors prelims document to ensure that they are met.		Depending on project procurement the design team may not select the sanitary ware and fittings. In this case it is recommended that the target flow rates and flush rates in order to achieve the required credits are detailed within a performance specification or contractors prelims document to ensure that they are met.
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	--[[User:Sarah_Peterson\|Sarah Peterson]] 15:25, 20 Feb 2018 (BST)		--[[User:Sarah_Peterson\|Sarah Peterson]] 15:25, 20 Feb 2018 (BST)

−	~~[[Category:Articles_needing_more_work]]~~ [[Category:BREEAM]]	+	[[Category:BREEAM]]

Paul Thistlethwaite at 16:51, 29 January 2019

2019-01-29T16:51:42Z

← Older revision		Revision as of 16:51, 29 January 2019
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	= Applicable Schemes =		= Applicable Schemes =

−	The guidelines collated in this ISD aim to support sustainable best practice in the topic described. This issue may apply in multiple BREEAM schemes covering different stages in the life of a building, different building types and different year versions. Some content may be generic but scheme nuances should also be taken into account. Refer to the comments below and related articles to this one to understand these nuances. See [[~~BREEAM_Issue_support_document_template~~\|this document]] for further guidelines.	+	The guidelines collated in this ISD aim to support sustainable best practice in the topic described. This issue may apply in multiple BREEAM schemes covering different stages in the life of a building, different building types and different year versions. Some content may be generic but scheme nuances should also be taken into account. Refer to the comments below and related articles to this one to understand these nuances. See [[BREEAM_Issue_support_document_guidelines\|this document]] for further guidelines.

	* BREEAM New Construction 2011		* BREEAM New Construction 2011

Paul Thistlethwaite at 12:07, 18 December 2018

2018-12-18T12:07:37Z

← Older revision		Revision as of 12:07, 18 December 2018
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	= Tools and resources =		= Tools and resources =
		+
		+	[https://www.designingbuildings.co.uk/wiki/BREEAM_Easy_wins#Water_Consumption Water consumption - Top 10 easy win issue]

	BREEAM Manual		BREEAM Manual

185.60.220.4 at 15:20, 8 May 2018

2018-05-08T15:20:02Z

← Older revision		Revision as of 15:20, 8 May 2018
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	= When to consider =		= When to consider =

−	Design Stage RIBA Stages 3-4	+	Design Stage RIBA Stages 3-4.

	= Step by step guidance =		= Step by step guidance =
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	BRE Global does not endorse any of the content posted and use of the content will not guarantee the meeting of certification criteria.		BRE Global does not endorse any of the content posted and use of the content will not guarantee the meeting of certification criteria.

−	--[[User:~~Sarah Peterson~~\|Sarah Peterson]] 15:25, 20 Feb 2018 (BST)	+	--[[User:Sarah_Peterson\|Sarah Peterson]] 15:25, 20 Feb 2018 (BST)

	[[Category:Articles_needing_more_work]] [[Category:BREEAM]]		[[Category:Articles_needing_more_work]] [[Category:BREEAM]]

Sarah Peterson at 15:25, 20 February 2018

2018-02-20T15:25:14Z

← Older revision		Revision as of 15:25, 20 February 2018
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	BRE Global does not endorse any of the content posted and use of the content will not guarantee the meeting of certification criteria.		BRE Global does not endorse any of the content posted and use of the content will not guarantee the meeting of certification criteria.

−	[[User:~~Sarah_Peterson~~\|Sarah Peterson]]	+	--[[User:Sarah Peterson\|Sarah Peterson]] 15:25, 20 Feb 2018 (BST)

	[[Category:Articles_needing_more_work]] [[Category:BREEAM]]		[[Category:Articles_needing_more_work]] [[Category:BREEAM]]

Sarah Peterson at 10:37, 20 February 2018

2018-02-20T10:37:02Z

← Older revision		Revision as of 10:37, 20 February 2018
Line 163:		Line 163:
	BRE Global does not endorse any of the content posted and use of the content will not guarantee the meeting of certification criteria.		BRE Global does not endorse any of the content posted and use of the content will not guarantee the meeting of certification criteria.

−	~~<~~Sarah Peterson~~>~~	+	[[User:Sarah_Peterson\|Sarah Peterson]]

	[[Category:Articles_needing_more_work]] [[Category:BREEAM]]		[[Category:Articles_needing_more_work]] [[Category:BREEAM]]

Sarah Peterson at 10:34, 20 February 2018

2018-02-20T10:34:35Z

← Older revision		Revision as of 10:34, 20 February 2018
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	-----		-----
	BRE Global does not endorse any of the content posted and use of the content will not guarantee the meeting of certification criteria.		BRE Global does not endorse any of the content posted and use of the content will not guarantee the meeting of certification criteria.
		+
		+	<Sarah Peterson>

	[[Category:Articles_needing_more_work]] [[Category:BREEAM]]		[[Category:Articles_needing_more_work]] [[Category:BREEAM]]