General lighting v task lighting - Revision history

Editor at 09:39, 2 November 2025

2025-11-02T09:39:41Z

← Older revision		Revision as of 09:39, 2 November 2025
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	--[[User:BSRIA\|BSRIA]]		--[[User:BSRIA\|BSRIA]]

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

	* Artificial lighting.		* Artificial lighting.

Designing Buildings at 08:52, 15 November 2020

2020-11-15T08:52:42Z

← Older revision		Revision as of 08:52, 15 November 2020
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	* Wellbeing.		* Wellbeing.

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

Designing Buildings at 07:34, 9 August 2020

2020-08-09T07:34:24Z

← Older revision		Revision as of 07:34, 9 August 2020
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−	~~This article originally appeared as a --BSRIA blog, [http://blogs.bsria.co.uk/2011/09/01/taking-lighting-to-task/ Taking lighting to task], published in September 2011 and written by Richard Forster.~~
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−	~~-----~~
	For many years the conventional method of interior lighting for workplaces was by ‘general illumination’. As lighting was not expensive to purchase, install or operate, the principle was to provide illumination over the whole floor area with a high degree of uniformity. This enabled plants or furniture to be positioned anywhere in the space and easily moved without recourse to changing the lighting array.		For many years the conventional method of interior lighting for workplaces was by ‘general illumination’. As lighting was not expensive to purchase, install or operate, the principle was to provide illumination over the whole floor area with a high degree of uniformity. This enabled plants or furniture to be positioned anywhere in the space and easily moved without recourse to changing the lighting array.

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	[NB: 'Accent lighting' is the ‘...highlighting of displayed merchandise or the features of a store or building.’ Ref. BRE’s The essential guide to retail lighting.]		[NB: 'Accent lighting' is the ‘...highlighting of displayed merchandise or the features of a store or building.’ Ref. BRE’s The essential guide to retail lighting.]

−	--[~~[User~~:~~BSRIA\|BSRIA]~~]	+	-----
		+	This article originally appeared as a --BSRIA blog, [http://blogs.bsria.co.uk/2011/09/01/taking-lighting-to-task/ Taking lighting to task], published in September 2011 and written by Richard Forster.

−	~~= Find out more =~~	+	--[[User:BSRIA\|BSRIA]]

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

	* Artificial lighting.		* Artificial lighting.
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	* Wellbeing.		* Wellbeing.

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

Editor at 18:06, 21 May 2020

2020-05-21T18:06:23Z

← Older revision		Revision as of 18:06, 21 May 2020
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	* Artificial lighting.		* Artificial lighting.
		+	* Colour Rendering Index CRI.
	* Commercial lighting.		* Commercial lighting.
	* Daylight benefits in healthcare buildings.		* Daylight benefits in healthcare buildings.

Editor at 18:02, 23 January 2019

2019-01-23T18:02:18Z

← Older revision		Revision as of 18:02, 23 January 2019
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	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===

		+	* Artificial lighting.
	* Commercial lighting.		* Commercial lighting.
	* Daylight benefits in healthcare buildings.		* Daylight benefits in healthcare buildings.

Designing Buildings at 07:36, 20 October 2018

2018-10-20T07:36:48Z

← Older revision		Revision as of 07:36, 20 October 2018
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	* Lighting control		* Lighting control
	* Lighting of construction sites.		* Lighting of construction sites.
−	* ~~Pattress~~.	+	* People-friendly lighting controls.
	* Rights to light.		* Rights to light.
	* Types of lighting.		* Types of lighting.

Editor at 13:09, 7 February 2018

2018-02-07T13:09:17Z

← Older revision		Revision as of 13:09, 7 February 2018
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	Modern lamps have long lives and therefore lighting is only infrequently changed. Installations over twenty years old are not uncommon, a time span when most other electrical equipment will have been replaced several times.		Modern lamps have long lives and therefore lighting is only infrequently changed. Installations over twenty years old are not uncommon, a time span when most other electrical equipment will have been replaced several times.

−	[NB: 'Accent lighting' is the ‘...highlighting of displayed merchandise or the features of a store or building.’ Ref BRE’s The essential guide to retail lighting.]	+	[NB: 'Accent lighting' is the ‘...highlighting of displayed merchandise or the features of a store or building.’ Ref. BRE’s The essential guide to retail lighting.]

	--[[User:BSRIA\|BSRIA]]		--[[User:BSRIA\|BSRIA]]
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	* Pattress.		* Pattress.
	* Rights to light.		* Rights to light.
		+	* Types of lighting.
	* Wellbeing.		* Wellbeing.

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

Editor at 16:14, 22 January 2018

2018-01-22T16:14:25Z

← Older revision		Revision as of 16:14, 22 January 2018
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	* Lighting control		* Lighting control
	* Lighting of construction sites.		* Lighting of construction sites.
		+	* Pattress.
	* Rights to light.		* Rights to light.
	* Wellbeing.		* Wellbeing.

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

Editor at 15:32, 24 November 2017

2017-11-24T15:32:24Z

← Older revision		Revision as of 15:32, 24 November 2017
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	[Council House 2 - Offices. Spot the five sources of light....]		[Council House 2 - Offices. Spot the five sources of light....]

−	However for the past decade [http://www.planningportal.gov.uk/buildingregulations/approveddocuments/partl/ UK lighting codes and standards] have recommended not ‘general’ but ‘task’ lighting. The significance of this change has either been ignored or gone largely un-noticed as the illumination values were basically the same. The new concept recognised that the main critical visual task is only carried out over a small part of the total floor area. The rest of the space is used for circulation, storage, filing and similar activities all of which are less demanding in terms of illumination. Lighting the whole area to the highest illumination required can use about a third more energy than matching the illumination to the different activities.	+	However, for the past decade [http://www.planningportal.gov.uk/buildingregulations/approveddocuments/partl/ UK lighting codes and standards] have recommended not ‘general’ but ‘task’ lighting. The significance of this change has either been ignored or gone largely un-noticed as the illumination values were basically the same. The new concept recognised that the main critical visual task is only carried out over a small part of the total floor area.
		+
		+	The rest of the space is used for circulation, storage, filing and similar activities all of which are less demanding in terms of illumination. Lighting the whole area to the highest illumination required can use about a third more energy than matching the illumination to the different activities.

	Energy costs are continuing to rise and therefore providing the right amount of light only where it is needed is beneficial both economically and environmentally. Also, variation in illumination can make the space visually more interesting than overall uniformity.		Energy costs are continuing to rise and therefore providing the right amount of light only where it is needed is beneficial both economically and environmentally. Also, variation in illumination can make the space visually more interesting than overall uniformity.
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	Modern lamps have long lives and therefore lighting is only infrequently changed. Installations over twenty years old are not uncommon, a time span when most other electrical equipment will have been replaced several times.		Modern lamps have long lives and therefore lighting is only infrequently changed. Installations over twenty years old are not uncommon, a time span when most other electrical equipment will have been replaced several times.

−	[NB 'Accent lighting' is the ‘...highlighting of displayed merchandise or the features of a store or building.’ Ref BRE’s The essential guide to retail lighting.]	+	[NB: 'Accent lighting' is the ‘...highlighting of displayed merchandise or the features of a store or building.’ Ref BRE’s The essential guide to retail lighting.]
−		+
−		+

	--[[User:BSRIA\|BSRIA]]		--[[User:BSRIA\|BSRIA]]
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	* Lighting.		* Lighting.
	* Lighting and offices.		* Lighting and offices.
		+	* Lighting control
	* Lighting of construction sites.		* Lighting of construction sites.
	* Rights to light.		* Rights to light.

Designing Buildings at 14:17, 19 June 2017

2017-06-19T14:17:35Z

← Older revision		Revision as of 14:17, 19 June 2017
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	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===

		+	* Commercial lighting.
	* Daylight benefits in healthcare buildings.		* Daylight benefits in healthcare buildings.
	* Daylight factor.		* Daylight factor.