Lighting in commercial buildings - Revision history

Editor at 20:30, 19 November 2020

2020-11-19T20:30:07Z

← Older revision		Revision as of 20:30, 19 November 2020
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	* Types of lighting.		* Types of lighting.

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

Editor at 20:29, 19 November 2020

2020-11-19T20:29:09Z

← Older revision		Revision as of 20:29, 19 November 2020
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	* Luminous flux.		* Luminous flux.
	* Power factor.		* Power factor.
		+	* Seasonal affective disorder SAD.
	* Space classifications for lighting controls.		* Space classifications for lighting controls.
	* Specialist process lighting.		* Specialist process lighting.
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	* Types of lighting.		* Types of lighting.

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

Designing Buildings at 11:13, 5 February 2020

2020-02-05T11:13:58Z

← Older revision		Revision as of 11:13, 5 February 2020
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	* The impact of lighting in retail design.		* The impact of lighting in retail design.
	* Types of lighting.		* Types of lighting.
		+
		+	[[Category:Design]] [[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

Designing Buildings: moved Lighting Considerations for Optimum Productivity in Commercial Buildings to Lighting in commercial buildings

2020-02-05T11:13:10Z

moved Lighting Considerations for Optimum Productivity in Commercial Buildings to Lighting in commercial buildings

← Older revision

Revision as of 11:13, 5 February 2020

Designing Buildings at 11:11, 5 February 2020

2020-02-05T11:11:41Z

← Older revision		Revision as of 11:11, 5 February 2020
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−	[[File:~~AR114~~ - ~~Lighting Considerations for Optimum Productivity in Commercial Buildings~~.jpg]]	+	[[File:AR114_-_Lighting_Considerations_for_Optimum_Productivity_in_Commercial_Buildings.jpg\|link=File:AR114_-_Lighting_Considerations_for_Optimum_Productivity_in_Commercial_Buildings.jpg]]
		+
		+	= Introduction =

	What makes commercial buildings productive? Well, in essence, they should have an environment, system or workflow that encourages occupants to perform their tasks to the best of their ability. Commercial buildings may consist of offices, retail establishments, institutions, hospitals, etc. Pleasant working conditions can be created in such buildings in a number of ways, with effective lighting being a significant contributor.		What makes commercial buildings productive? Well, in essence, they should have an environment, system or workflow that encourages occupants to perform their tasks to the best of their ability. Commercial buildings may consist of offices, retail establishments, institutions, hospitals, etc. Pleasant working conditions can be created in such buildings in a number of ways, with effective lighting being a significant contributor.
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	Essentially, lighting designs should cater to the type of indoor activity in the commercial building such that the lux levels and energy sufficiency standards are created and maintained. Lighting designs should consider the illuminance of the internal spaces, the function to be performed and appropriate light fixtures.		Essentially, lighting designs should cater to the type of indoor activity in the commercial building such that the lux levels and energy sufficiency standards are created and maintained. Lighting designs should consider the illuminance of the internal spaces, the function to be performed and appropriate light fixtures.

−	Light has a considerable influence on both our bodies and minds. The right quantities of daylight and artificial light can positively affect our health. Sufficient daylight and artificial light in an office space can improve satisfaction and efficiency, through a creative, dynamic and motivating environment. ~~It has been proven over the years that~~ light can inspire, improve communication, set a mood and influence emotions. Spaces can be made desirable, resulting in a general sense of well-being.	+	Light has a considerable influence on both our bodies and minds. The right quantities of daylight and artificial light can positively affect our health. Sufficient daylight and artificial light in an office space can improve satisfaction and efficiency, through a creative, dynamic and motivating environment. Appropriate light can inspire, improve communication, set a mood and influence emotions. Spaces can be made desirable, resulting in a general sense of well-being.

	Over-lighting can be just as detrimental as under-lighting in commercial spaces. People should have enough light to perform and complete their tasks but not so much that it becomes blinding. Tasks that require a high degree of detailing, such as drafting, requires more light than one that involves walking. The IESNA Lighting Handbook, published by the Illuminating Engineering Society, is a popular reference source for lighting design.		Over-lighting can be just as detrimental as under-lighting in commercial spaces. People should have enough light to perform and complete their tasks but not so much that it becomes blinding. Tasks that require a high degree of detailing, such as drafting, requires more light than one that involves walking. The IESNA Lighting Handbook, published by the Illuminating Engineering Society, is a popular reference source for lighting design.

−	~~Before referring to this handbook, design consultants~~ must understand illuminance, or the amount of light that hits a surface. For example, in an office, it is relevant to know the illuminance on a desk. The unit of measuring illuminance is a foot candle (FC) or lux, and 1 FC is the amount of light on 1 square foot of any surface using 1 lumen of light from 1 foot away from the surface – 1 lumen per square foot. Similarly, 1 lux is the amount of light on 1 square metre of any surface using 1 lumen of light from 1 metre away from the surface – 1 lumen per square metre. Also, 10 lux is approximately 1 FC. An illuminance of 400 lux would be sufficient for a well-lit office.	+	Designers must understand illuminance, or the amount of light that hits a surface. For example, in an office, it is relevant to know the illuminance on a desk. The unit of measuring illuminance is a foot candle (FC) or lux, and 1 FC is the amount of light on 1 square foot of any surface using 1 lumen of light from 1 foot away from the surface – 1 lumen per square foot. Similarly, 1 lux is the amount of light on 1 square metre of any surface using 1 lumen of light from 1 metre away from the surface – 1 lumen per square metre. Also, 10 lux is approximately 1 FC. An illuminance of 400 lux would be sufficient for a well-lit office.

	Another factor to consider is lighting power density, or LPD, which is the amount of power used by lighting per unit of building area. For instance, in the United States, LPD is measured in watts per square foot, whereas this may differ from country to country and is dependent on local and international codes. The watt measurement includes power used by lighting fixtures, ballasts, controls, transformers or any other device or component involved in lighting. Calculations for LPD may be performed using the Building Area Method or the Space-by-Space method, which has been shown to be more accurate and enable a lower LPD estimate.		Another factor to consider is lighting power density, or LPD, which is the amount of power used by lighting per unit of building area. For instance, in the United States, LPD is measured in watts per square foot, whereas this may differ from country to country and is dependent on local and international codes. The watt measurement includes power used by lighting fixtures, ballasts, controls, transformers or any other device or component involved in lighting. Calculations for LPD may be performed using the Building Area Method or the Space-by-Space method, which has been shown to be more accurate and enable a lower LPD estimate.
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	\|}		\|}

−	Types of ~~Light Fixtures~~	+	= Types of light fixtures =

−	~~Generally,~~ T5, compact fluorescent lights and LED light fixtures are used in commercial buildings.	+	T5, compact fluorescent lights and LED light fixtures are commonly used in commercial buildings:

−	* Tubular fluorescent lights – usually set into ceilings, frosted lens covering, 1-4 bulbs, long lasting and energy efficient	+	* Tubular fluorescent lights – usually set into ceilings, frosted lens covering, 1-4 bulbs, long lasting and energy efficient.
−	* Compact fluorescent lights – compact internal ballast, energy efficient, natural white colour perception, used for downlight lamps	+	* Compact fluorescent lights – compact internal ballast, energy efficient, natural white colour perception, used for downlight lamps.
−	* T5 fluorescent lights – suitable for troffer or high bay use, long lasting, minimal maintenance	+	* T5 fluorescent lights – suitable for troffer or high bay use, long lasting, minimal maintenance.
−	* LED lights – uses less power, long lasting, economic	+	* LED lights – uses less power, long lasting, economic.

−	~~Requirements of~~ Lux ~~Levels~~	+	= Lux levels =

−	In large areas, to achieve a higher lumen, the number of light fixtures is increased ~~accordingly~~. The lux level required is calculated based on the size of the space, the activity that takes place there and the required energy efficiency. Software tools, such as DIALux or AGi32, ~~are employed~~ for lux level calculations.	+	In large areas, to achieve a higher lumen, the number of light fixtures is increased. The lux level required is calculated based on the size of the space, the activity that takes place there and the required energy efficiency. Software tools, such as DIALux or AGi32, can be used for lux level calculations.

−	Guidelines and local codes determine the minimum lux levels required in different environments. Lighting consultants and M&E design consultants must be careful not to completely give in to certain clients who ask for lux levels higher than those designated in guidelines and lighting codes in offices and other commercial spaces.	+	Guidelines and local codes determine the minimum lux levels required in different environments. Consultants should ideally employ new advances in the lighting industry to help reduce energy usage and improve comfort, such as connected lighting, LED fixtures with advanced controls and interactive lighting. Daylight, LED light and harvesting technologies must be balanced.
−		+
−	Consultants should ideally employ new ~~concepts~~ in the lighting industry to help ~~contain~~ energy usage~~, efficiency~~ and comfort, such as connected lighting, LED fixtures with advanced controls and interactive lighting. Daylight, LED light and harvesting technologies must be balanced.	+

	Lighting in offices, besides being at optimum levels to help perform and complete tasks, must also meet the biological lighting needs of office personnel in the future. Here’s how it could be possible to help employees stay healthy and alert:		Lighting in offices, besides being at optimum levels to help perform and complete tasks, must also meet the biological lighting needs of office personnel in the future. Here’s how it could be possible to help employees stay healthy and alert:

−	* ~~Creation of an ambience to develop creativity –~~ A combination of direct, indirect and vertically lit surfaces have been found to be pleasing for most employees. When the desk light can be individually controlled, greater motivation and accuracy in tasks has been noticed. Designers should try to avoid designing lighting that only has downward-directed illumination.	+	* A combination of direct, indirect and vertically lit surfaces have been found to be pleasing for most employees. When the desk light can be individually controlled, greater motivation and accuracy in tasks has been noticed. Designers should try to avoid designing lighting that only has downward-directed illumination.
−	* ~~Need light for both people and tasks –~~ Light intake influences ~~good~~ sleep and a feeling of wellness, resulting in higher productivity. Natural light helps people tell the time of day. When there is a lack of natural light, the body’s circadian rhythm loses its pace, and as a result, people become tired and listless. A mix of different lighting options can reduce this effect.	+	* Light intake influences sleep and a feeling of wellness, resulting in higher productivity. Natural light helps people tell the time of day. When there is a lack of natural light, the body’s circadian rhythm loses its pace, and as a result, people become tired and listless. A mix of different lighting options can reduce this effect.
−	* ~~How daylight influences emotions –~~ Spaces can feel smaller due to insufficient light. A person’s work area should ideally enjoy a minimum of 3 percent of daylight. This ensures that people are emotionally upbeat, and an outside view is an added bonus.	+	* Spaces can feel smaller due to insufficient light. A person’s work area should ideally enjoy a minimum of 3 percent of daylight. This ensures that people are emotionally upbeat, and an outside view is an added bonus.
	* Preventing SAD (seasonal affective disorder) – During a season that causes people to experience less light intake, a type of depression linked to lack of light (SAD) can result. Moodiness and listlessness are symptoms. Sufficient amounts of bright light can help treat and prevent this disorder. An illumination level of 2000 lux at work in the morning and afternoon reduces physical reactions to stress and energises the body.		* Preventing SAD (seasonal affective disorder) – During a season that causes people to experience less light intake, a type of depression linked to lack of light (SAD) can result. Moodiness and listlessness are symptoms. Sufficient amounts of bright light can help treat and prevent this disorder. An illumination level of 2000 lux at work in the morning and afternoon reduces physical reactions to stress and energises the body.
	* Changing light to suit the time of day – When people need to work throughout the night or a good part of the night, light intensities should be increased and so should the quantity of bluish white light in the room. When tasks are almost complete and people are winding down for the day, the light setting should be warm and of low intensity to encourage a calming effect.		* Changing light to suit the time of day – When people need to work throughout the night or a good part of the night, light intensities should be increased and so should the quantity of bluish white light in the room. When tasks are almost complete and people are winding down for the day, the light setting should be warm and of low intensity to encourage a calming effect.
−	* Installation of applications to negate the blue light effect – Sometimes, there is difficulty in falling asleep after a long day in front of the screen. This is because of the high blue light content of backlit screens, which at night upsets the circadian rhythm and can affect one’s health. Applications, such as F.lux. or Twilight, can reduce the blue light on Android phones. Other applications can relate a screen’s colour and brightness to that location’s daylight. ~~Therefore, it~~ can be beneficial to have warm light sources combining with indirect and general light with varying colour temperatures near the working space.	+	* Installation of applications to negate the blue light effect – Sometimes, there is difficulty in falling asleep after a long day in front of the screen. This is because of the high blue light content of backlit screens, which at night upsets the circadian rhythm and can affect one’s health. Applications, such as F.lux. or Twilight, can reduce the blue light on Android phones. Other applications can relate a screen’s colour and brightness to that location’s daylight. It can be beneficial to have warm light sources combining with indirect and general light with varying colour temperatures near the working space.
		+
		+	= Related articles on Designing Buildings Wiki =

−	~~So, with so much at stake in~~ lighting ~~design, it may be necessary to employ lighting consultants that have an in~~-~~depth understanding of the effects, both drawbacks~~ and ~~advantages,~~ of lighting ~~options that would optimise productivity in commercial buildings~~. ~~Along with precise [https://www~~.~~xscad~~.~~com/services/electrical-design/ electrical design services]~~ and ~~experience in [https://www~~.~~xscad~~.~~com/services/mep-coordination/ building services coordination], service providers must be able~~ to ~~deliver BIM services which can incorporate the detailed considerations~~ of ~~modern-day~~ lighting ~~options for commercial buildings~~.	+	* Architectural LED market.
		+	* Artificial lighting.
		+	* Ballast or control gear.
		+	* Colour.
		+	* Colour appearance.
		+	* Dichroic reflector.
		+	* Discharge lamp.
		+	* Extra-low voltage lamps.
		+	* General lighting v task lighting.
		+	* Glare.
		+	* Health and wellbeing impacts of natural and artificial lighting.
		+	* Illuminance.
		+	* Lamp.
		+	* Lamp efficacy.
		+	* Lava lamp.
		+	* Light fitting.
		+	* Lighting and energy efficiency.
		+	* Lighting and health infographic.
		+	* Lighting energy numeric indicator LENI.
		+	* Lighting of construction sites.
		+	* Luminaire efficacy.
		+	* Luminous flux.
		+	* Power factor.
		+	* Space classifications for lighting controls.
		+	* Specialist process lighting.
		+	* The essential guide to retail lighting.
		+	* The impact of lighting in retail design.
		+	* Types of lighting.

Designing Buildings at 10:53, 5 February 2020

2020-02-05T10:53:17Z

← Older revision		Revision as of 10:53, 5 February 2020
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−	~~What makes commercial buildings productive? Well,~~ in ~~essence, they should have an environment, system or workflow that encourages inhabitants to perform their tasks to the best of their ability.~~ Commercial buildings may consist of offices, retail establishments, institutions, hospitals, etc. Pleasant working conditions can be created in such buildings through a number of ways, with effective lighting being a significant contributor. The right lighting can lead to optimum functioning, satisfaction and a ‘task-centric’ atmosphere. Commercial lighting may be expensive initially, but it is designed to be longer lasting, more durable and have better energy saving options than lighting for other settings. It is important that M&E design consultants, or MEP engineers, collaborate with lighting experts to determine the right combination of lighting for commercial spaces.	+	[[File:AR114 - Lighting Considerations for Optimum Productivity in Commercial Buildings.jpg]]

−	~~[https://www~~.~~designingbuildings~~.co.uk/w/images/b/b0/AR114_-_Lighting_Considerations_for_Optimum_Productivity_in_Commercial_Buildings.jpg https://www.designingbuildings.co.uk/w/images/b/b0/AR114_-_Lighting_Considerations_for_Optimum_Productivity_in_Commercial_Buildings.jpg]	+	What makes commercial buildings productive? Well, in essence, they should have an environment, system or workflow that encourages occupants to perform their tasks to the best of their ability. Commercial buildings may consist of offices, retail establishments, institutions, hospitals, etc. Pleasant working conditions can be created in such buildings in a number of ways, with effective lighting being a significant contributor.

−	~~Essentially,~~ lighting ~~designs should cater to the type of indoor activity in the commercial building such that the lux levels~~ and ~~energy sufficiency standards are duly maintained~~. ~~Lighting designs should review the illuminance of the internal spaces~~, ~~the function~~ to be ~~performed at those spaces~~ and ~~appropriate light fixtures~~ for the spaces.	+	The right lighting can enable optimum functioning, satisfaction and a ‘task-centric’ atmosphere. Commercial lighting may be expensive initially, but it is designed to be longer lasting, more durable and have better energy saving potential than lighting for some other settings. It is important that mechanical and electrical design consultants or engineers collaborate with lighting experts to determine the right combination of lighting for commercial spaces.

−	~~Humans are attracted to light~~, and ~~thus~~, light has a considerable influence on both our bodies and minds. The right quantities of daylight and artificial light can positively affect our health. Sufficient daylight and artificial light in an office space can improve satisfaction and efficiency, through a creative, dynamic and motivating environment. It has been proven over the years that light can inspire, improve communication, set a mood and influence emotions. Spaces can be made desirable, resulting in a general sense of well-being.	+	Essentially, lighting designs should cater to the type of indoor activity in the commercial building such that the lux levels and energy sufficiency standards are created and maintained. Lighting designs should consider the illuminance of the internal spaces, the function to be performed and appropriate light fixtures.
		+
		+	Light has a considerable influence on both our bodies and minds. The right quantities of daylight and artificial light can positively affect our health. Sufficient daylight and artificial light in an office space can improve satisfaction and efficiency, through a creative, dynamic and motivating environment. It has been proven over the years that light can inspire, improve communication, set a mood and influence emotions. Spaces can be made desirable, resulting in a general sense of well-being.

	Over-lighting can be just as detrimental as under-lighting in commercial spaces. People should have enough light to perform and complete their tasks but not so much that it becomes blinding. Tasks that require a high degree of detailing, such as drafting, requires more light than one that involves walking. The IESNA Lighting Handbook, published by the Illuminating Engineering Society, is a popular reference source for lighting design.		Over-lighting can be just as detrimental as under-lighting in commercial spaces. People should have enough light to perform and complete their tasks but not so much that it becomes blinding. Tasks that require a high degree of detailing, such as drafting, requires more light than one that involves walking. The IESNA Lighting Handbook, published by the Illuminating Engineering Society, is a popular reference source for lighting design.

Designing Buildings: Reverted edits by 114.143.140.10 (talk) to last revision by Xscad

2020-01-29T06:22:27Z

Reverted edits by 114.143.140.10 (talk) to last revision by Xscad

← Older revision		Revision as of 06:22, 29 January 2020
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	What makes commercial buildings productive? Well, in essence, they should have an environment, system or workflow that encourages inhabitants to perform their tasks to the best of their ability. Commercial buildings may consist of offices, retail establishments, institutions, hospitals, etc. Pleasant working conditions can be created in such buildings through a number of ways, with effective lighting being a significant contributor. The right lighting can lead to optimum functioning, satisfaction and a ‘task-centric’ atmosphere. Commercial lighting may be expensive initially, but it is designed to be longer lasting, more durable and have better energy saving options than lighting for other settings. It is important that M&E design consultants, or MEP engineers, collaborate with lighting experts to determine the right combination of lighting for commercial spaces.		What makes commercial buildings productive? Well, in essence, they should have an environment, system or workflow that encourages inhabitants to perform their tasks to the best of their ability. Commercial buildings may consist of offices, retail establishments, institutions, hospitals, etc. Pleasant working conditions can be created in such buildings through a number of ways, with effective lighting being a significant contributor. The right lighting can lead to optimum functioning, satisfaction and a ‘task-centric’ atmosphere. Commercial lighting may be expensive initially, but it is designed to be longer lasting, more durable and have better energy saving options than lighting for other settings. It is important that M&E design consultants, or MEP engineers, collaborate with lighting experts to determine the right combination of lighting for commercial spaces.

−	[~~[File~~:~~Lighting_Considerations_for_Optimum_Productivity_in_Commercial_Buildings~~.jpg~~\|link=File~~:~~Lighting_Considerations_for_Optimum_Productivity_in_Commercial_Buildings~~.jpg]]	+	[https://www.designingbuildings.co.uk/w/images/b/b0/AR114_-_Lighting_Considerations_for_Optimum_Productivity_in_Commercial_Buildings.jpg https://www.designingbuildings.co.uk/w/images/b/b0/AR114_-_Lighting_Considerations_for_Optimum_Productivity_in_Commercial_Buildings.jpg]

	Essentially, lighting designs should cater to the type of indoor activity in the commercial building such that the lux levels and energy sufficiency standards are duly maintained. Lighting designs should review the illuminance of the internal spaces, the function to be performed at those spaces and appropriate light fixtures for the spaces.		Essentially, lighting designs should cater to the type of indoor activity in the commercial building such that the lux levels and energy sufficiency standards are duly maintained. Lighting designs should review the illuminance of the internal spaces, the function to be performed at those spaces and appropriate light fixtures for the spaces.
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	So, with so much at stake in lighting design, it may be necessary to employ lighting consultants that have an in-depth understanding of the effects, both drawbacks and advantages, of lighting options that would optimise productivity in commercial buildings. Along with precise [https://www.xscad.com/services/electrical-design/ electrical design services] and experience in [https://www.xscad.com/services/mep-coordination/ building services coordination], service providers must be able to deliver BIM services which can incorporate the detailed considerations of modern-day lighting options for commercial buildings.		So, with so much at stake in lighting design, it may be necessary to employ lighting consultants that have an in-depth understanding of the effects, both drawbacks and advantages, of lighting options that would optimise productivity in commercial buildings. Along with precise [https://www.xscad.com/services/electrical-design/ electrical design services] and experience in [https://www.xscad.com/services/mep-coordination/ building services coordination], service providers must be able to deliver BIM services which can incorporate the detailed considerations of modern-day lighting options for commercial buildings.
−
−	~~Source by [https://www.xscad.com/ XS CAD]~~

114.143.140.10 at 09:10, 28 January 2020

2020-01-28T09:10:51Z

← Older revision		Revision as of 09:10, 28 January 2020
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	What makes commercial buildings productive? Well, in essence, they should have an environment, system or workflow that encourages inhabitants to perform their tasks to the best of their ability. Commercial buildings may consist of offices, retail establishments, institutions, hospitals, etc. Pleasant working conditions can be created in such buildings through a number of ways, with effective lighting being a significant contributor. The right lighting can lead to optimum functioning, satisfaction and a ‘task-centric’ atmosphere. Commercial lighting may be expensive initially, but it is designed to be longer lasting, more durable and have better energy saving options than lighting for other settings. It is important that M&E design consultants, or MEP engineers, collaborate with lighting experts to determine the right combination of lighting for commercial spaces.		What makes commercial buildings productive? Well, in essence, they should have an environment, system or workflow that encourages inhabitants to perform their tasks to the best of their ability. Commercial buildings may consist of offices, retail establishments, institutions, hospitals, etc. Pleasant working conditions can be created in such buildings through a number of ways, with effective lighting being a significant contributor. The right lighting can lead to optimum functioning, satisfaction and a ‘task-centric’ atmosphere. Commercial lighting may be expensive initially, but it is designed to be longer lasting, more durable and have better energy saving options than lighting for other settings. It is important that M&E design consultants, or MEP engineers, collaborate with lighting experts to determine the right combination of lighting for commercial spaces.

−	[[File:~~Lighting Considerations for Optimum Productivity in Commercial Buildings~~.jpg]]	+	[[File:Lighting_Considerations_for_Optimum_Productivity_in_Commercial_Buildings.jpg\|link=File:Lighting_Considerations_for_Optimum_Productivity_in_Commercial_Buildings.jpg]]

	Essentially, lighting designs should cater to the type of indoor activity in the commercial building such that the lux levels and energy sufficiency standards are duly maintained. Lighting designs should review the illuminance of the internal spaces, the function to be performed at those spaces and appropriate light fixtures for the spaces.		Essentially, lighting designs should cater to the type of indoor activity in the commercial building such that the lux levels and energy sufficiency standards are duly maintained. Lighting designs should review the illuminance of the internal spaces, the function to be performed at those spaces and appropriate light fixtures for the spaces.
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	So, with so much at stake in lighting design, it may be necessary to employ lighting consultants that have an in-depth understanding of the effects, both drawbacks and advantages, of lighting options that would optimise productivity in commercial buildings. Along with precise [https://www.xscad.com/services/electrical-design/ electrical design services] and experience in [https://www.xscad.com/services/mep-coordination/ building services coordination], service providers must be able to deliver BIM services which can incorporate the detailed considerations of modern-day lighting options for commercial buildings.		So, with so much at stake in lighting design, it may be necessary to employ lighting consultants that have an in-depth understanding of the effects, both drawbacks and advantages, of lighting options that would optimise productivity in commercial buildings. Along with precise [https://www.xscad.com/services/electrical-design/ electrical design services] and experience in [https://www.xscad.com/services/mep-coordination/ building services coordination], service providers must be able to deliver BIM services which can incorporate the detailed considerations of modern-day lighting options for commercial buildings.
		+
		+	Source by [https://www.xscad.com/ XS CAD]

114.143.140.10 at 08:58, 28 January 2020

2020-01-28T08:58:21Z

← Older revision		Revision as of 08:58, 28 January 2020
Line 1:		Line 1:
	What makes commercial buildings productive? Well, in essence, they should have an environment, system or workflow that encourages inhabitants to perform their tasks to the best of their ability. Commercial buildings may consist of offices, retail establishments, institutions, hospitals, etc. Pleasant working conditions can be created in such buildings through a number of ways, with effective lighting being a significant contributor. The right lighting can lead to optimum functioning, satisfaction and a ‘task-centric’ atmosphere. Commercial lighting may be expensive initially, but it is designed to be longer lasting, more durable and have better energy saving options than lighting for other settings. It is important that M&E design consultants, or MEP engineers, collaborate with lighting experts to determine the right combination of lighting for commercial spaces.		What makes commercial buildings productive? Well, in essence, they should have an environment, system or workflow that encourages inhabitants to perform their tasks to the best of their ability. Commercial buildings may consist of offices, retail establishments, institutions, hospitals, etc. Pleasant working conditions can be created in such buildings through a number of ways, with effective lighting being a significant contributor. The right lighting can lead to optimum functioning, satisfaction and a ‘task-centric’ atmosphere. Commercial lighting may be expensive initially, but it is designed to be longer lasting, more durable and have better energy saving options than lighting for other settings. It is important that M&E design consultants, or MEP engineers, collaborate with lighting experts to determine the right combination of lighting for commercial spaces.

−	[~~https~~://www.designingbuildings.co.uk/w/images/b/b0/AR114_-_Lighting_Considerations_for_Optimum_Productivity_in_Commercial_Buildings.jpg https://www.designingbuildings.co.uk/w/images/b/b0/AR114_-_Lighting_Considerations_for_Optimum_Productivity_in_Commercial_Buildings.jpg]	+	[[File:Lighting Considerations for Optimum Productivity in Commercial Buildings.jpg]]

	Essentially, lighting designs should cater to the type of indoor activity in the commercial building such that the lux levels and energy sufficiency standards are duly maintained. Lighting designs should review the illuminance of the internal spaces, the function to be performed at those spaces and appropriate light fixtures for the spaces.		Essentially, lighting designs should cater to the type of indoor activity in the commercial building such that the lux levels and energy sufficiency standards are duly maintained. Lighting designs should review the illuminance of the internal spaces, the function to be performed at those spaces and appropriate light fixtures for the spaces.

Xscad: Created page with "What makes commercial buildings productive? Well, in essence, they should have an environment, system or workflow that encourages inhabitants to perform their tasks to the best o..."

2020-01-28T05:53:16Z

Created page with "What makes commercial buildings productive? Well, in essence, they should have an environment, system or workflow that encourages inhabitants to perform their tasks to the best o..."

New page

What makes commercial buildings productive? Well, in essence, they should have an environment, system or workflow that encourages inhabitants to perform their tasks to the best of their ability. Commercial buildings may consist of offices, retail establishments, institutions, hospitals, etc. Pleasant working conditions can be created in such buildings through a number of ways, with effective lighting being a significant contributor. The right lighting can lead to optimum functioning, satisfaction and a ‘task-centric’ atmosphere. Commercial lighting may be expensive initially, but it is designed to be longer lasting, more durable and have better energy saving options than lighting for other settings. It is important that M&E design consultants, or MEP engineers, collaborate with lighting experts to determine the right combination of lighting for commercial spaces.

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Essentially, lighting designs should cater to the type of indoor activity in the commercial building such that the lux levels and energy sufficiency standards are duly maintained. Lighting designs should review the illuminance of the internal spaces, the function to be performed at those spaces and appropriate light fixtures for the spaces.

Humans are attracted to light, and thus, light has a considerable influence on both our bodies and minds. The right quantities of daylight and artificial light can positively affect our health. Sufficient daylight and artificial light in an office space can improve satisfaction and efficiency, through a creative, dynamic and motivating environment. It has been proven over the years that light can inspire, improve communication, set a mood and influence emotions. Spaces can be made desirable, resulting in a general sense of well-being.

Over-lighting can be just as detrimental as under-lighting in commercial spaces. People should have enough light to perform and complete their tasks but not so much that it becomes blinding. Tasks that require a high degree of detailing, such as drafting, requires more light than one that involves walking. The IESNA Lighting Handbook, published by the Illuminating Engineering Society, is a popular reference source for lighting design.

Before referring to this handbook, design consultants must understand illuminance, or the amount of light that hits a surface. For example, in an office, it is relevant to know the illuminance on a desk. The unit of measuring illuminance is a foot candle (FC) or lux, and 1 FC is the amount of light on 1 square foot of any surface using 1 lumen of light from 1 foot away from the surface – 1 lumen per square foot. Similarly, 1 lux is the amount of light on 1 square metre of any surface using 1 lumen of light from 1 metre away from the surface – 1 lumen per square metre. Also, 10 lux is approximately 1 FC. An illuminance of 400 lux would be sufficient for a well-lit office.

Another factor to consider is lighting power density, or LPD, which is the amount of power used by lighting per unit of building area. For instance, in the United States, LPD is measured in watts per square foot, whereas this may differ from country to country and is dependent on local and international codes. The watt measurement includes power used by lighting fixtures, ballasts, controls, transformers or any other device or component involved in lighting. Calculations for LPD may be performed using the Building Area Method or the Space-by-Space method, which has been shown to be more accurate and enable a lower LPD estimate.

The IESNA Lighting Handbook recommends light levels for most conceivable spaces. A few of them that are relevant to commercial buildings can be found below:

{|
| Room Type
| Light Level (FC)
| Light Level (Lux)
| IECC 2015 LPD (Watts Per Sf)
|-
| Cafeteria
| 20-30 FC
| 200-300 lux
| 0.65
|-
| Conference Room
| 30-50 FC
| 30-50 FC
| 1.23
|-
| Exhibit Space
| 30-50 FC
| 300-500 lux
| 1.45
|-
| Kitchen/Pantry
| 30-75 FC
| 300-750 lux
| 1.21
|-
| Lobby/Office
| 20-30 FC
| 200-300 lux
| 0.90
|-
| Lounge/Breakroom
| 10-30 FC
| 100-300 lux
| 0.73
|-
| Mech/Elec Room
| 20-50 FC
| 200-500 lux
| 0.95
|-
| Office-Open
| 30-50 FC
| 300-500 lux
| 0.98
|-
| Office-Private
| 30-50 FC
| 300-500 lux
| 1.11
|-
| Parking-Interior
| 5-10 FC
| 50-100 lux
| 0.19
|-
| Restroom/Toilet
| 10-30 FC
| 100-300 lux
| 0.98
|-
| Retail Sales
| 20-50 FC
| 200-500 lux
| 1.59
|-
| Stairway
| 5-10 FC
| 50-100 lux
| 0.69
|-
| Storage Room
| 5-20 FC
| 50-200 lux
| 0.63
|-
| Workshop
| 30-75 FC
| 300-750 lux
| 1.59
|}

Types of Light Fixtures

Generally, T5, compact fluorescent lights and LED light fixtures are used in commercial buildings.

* Tubular fluorescent lights – usually set into ceilings, frosted lens covering, 1-4 bulbs, long lasting and energy efficient
* Compact fluorescent lights – compact internal ballast, energy efficient, natural white colour perception, used for downlight lamps
* T5 fluorescent lights – suitable for troffer or high bay use, long lasting, minimal maintenance
* LED lights – uses less power, long lasting, economic

Requirements of Lux Levels

In large areas, to achieve a higher lumen, the number of light fixtures is increased accordingly. The lux level required is calculated based on the size of the space, the activity that takes place there and the required energy efficiency. Software tools, such as DIALux or AGi32, are employed for lux level calculations.

Guidelines and local codes determine the minimum lux levels required in different environments. Lighting consultants and M&E design consultants must be careful not to completely give in to certain clients who ask for lux levels higher than those designated in guidelines and lighting codes in offices and other commercial spaces.

Consultants should ideally employ new concepts in the lighting industry to help contain energy usage, efficiency and comfort, such as connected lighting, LED fixtures with advanced controls and interactive lighting. Daylight, LED light and harvesting technologies must be balanced.

Lighting in offices, besides being at optimum levels to help perform and complete tasks, must also meet the biological lighting needs of office personnel in the future. Here’s how it could be possible to help employees stay healthy and alert:

* Creation of an ambience to develop creativity – A combination of direct, indirect and vertically lit surfaces have been found to be pleasing for most employees. When the desk light can be individually controlled, greater motivation and accuracy in tasks has been noticed. Designers should try to avoid designing lighting that only has downward-directed illumination.
* Need light for both people and tasks – Light intake influences good sleep and a feeling of wellness, resulting in higher productivity. Natural light helps people tell the time of day. When there is a lack of natural light, the body’s circadian rhythm loses its pace, and as a result, people become tired and listless. A mix of different lighting options can reduce this effect.
* How daylight influences emotions – Spaces can feel smaller due to insufficient light. A person’s work area should ideally enjoy a minimum of 3 percent of daylight. This ensures that people are emotionally upbeat, and an outside view is an added bonus.
* Preventing SAD (seasonal affective disorder) – During a season that causes people to experience less light intake, a type of depression linked to lack of light (SAD) can result. Moodiness and listlessness are symptoms. Sufficient amounts of bright light can help treat and prevent this disorder. An illumination level of 2000 lux at work in the morning and afternoon reduces physical reactions to stress and energises the body.
* Changing light to suit the time of day – When people need to work throughout the night or a good part of the night, light intensities should be increased and so should the quantity of bluish white light in the room. When tasks are almost complete and people are winding down for the day, the light setting should be warm and of low intensity to encourage a calming effect.
* Installation of applications to negate the blue light effect – Sometimes, there is difficulty in falling asleep after a long day in front of the screen. This is because of the high blue light content of backlit screens, which at night upsets the circadian rhythm and can affect one’s health. Applications, such as F.lux. or Twilight, can reduce the blue light on Android phones. Other applications can relate a screen’s colour and brightness to that location’s daylight. Therefore, it can be beneficial to have warm light sources combining with indirect and general light with varying colour temperatures near the working space.

So, with so much at stake in lighting design, it may be necessary to employ lighting consultants that have an in-depth understanding of the effects, both drawbacks and advantages, of lighting options that would optimise productivity in commercial buildings. Along with precise [https://www.xscad.com/services/electrical-design/ electrical design services] and experience in [https://www.xscad.com/services/mep-coordination/ building services coordination], service providers must be able to deliver BIM services which can incorporate the detailed considerations of modern-day lighting options for commercial buildings.