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How can structural design optimize daylighting and reduce energy demand?

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Daylighting is the use of natural light to illuminate indoor spaces, reducing the need for artificial lighting and enhancing the visual comfort and well-being of occupants. It can also lower the energy demand and carbon footprint of buildings, as lighting accounts for about 15% of global electricity consumption. But how can structural design optimize daylighting and reduce energy demand? Here are some key aspects to consider.

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1 Orientation and shape

The orientation and shape of a building affect how much sunlight it receives throughout the day and the year. Ideally, a building should be oriented to maximize the exposure to the south in the northern hemisphere, or to the north in the southern hemisphere, where the sun is at its highest and brightest. The shape of the building should also avoid creating deep or narrow spaces that limit the penetration of daylight, and instead promote open and flexible layouts that allow for natural light distribution.

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Jonathon Kindle

MEP specialist in structure (vertical tolerance) deeply integrated in construction culture
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For example if the orientation of a residential structures front door is oriented facing north. During the summer months of the year the east side of the structure catches the morning sun. The west side of the structure catches the evening sun during the hottest times of the day. For windows, which is the area most likely for a increase to transfer heat. To counter the transfer increase your conditioning load on the west side during the hottest daylight times. Minimize the amount of sunlight through window spaces. This will counter ultimately reducing the amount of heat transfer. During the winter months in this circumstance. Increase the amount of sunlight through window spaces to reduce energy cost by utilizing natural heat.

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2 Fenestration and glazing

Fenestration and glazing are the openings and transparent elements of a building that allow daylight to enter. They include windows, skylights, glass walls, and doors. The design of fenestration and glazing should balance the amount, quality, and direction of daylight with the thermal performance and visual comfort of the building. For example, large windows can provide more daylight, but also increase heat loss or gain and glare. Therefore, the size, location, type, and orientation of fenestration and glazing should be carefully selected and optimized for each space and climate.

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Kenny Hayes

Glazier installer aluminium and external cladding30 years experience
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In my experience glass is the most versatile thing in construction being a glazier to trade I have had the opportunity to work with glass Cutt it polished it make it into dgu’s even replace historical stained glass repairs now I can crane it or robot it inn there’s not going to be a glazier ni more feel sad

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3 Shading and control

Shading and control are the devices and systems that regulate the amount and direction of daylight entering a building. They include blinds, curtains, louvers, awnings, overhangs, and vegetation. Shading and control can help prevent overheating, glare, and fading of materials, as well as enhance the visual quality and diversity of daylight. They can also be integrated with sensors and automation to adjust to the changing conditions and preferences of the occupants and the environment.

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Kenny Hayes

Glazier installer aluminium and external cladding30 years experience
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In my opinion that everyone one should know that two bits of glass with a bit of air between them is not going to make them cooler in the summer or warmer in the winter it’s if they’ve got good quality thermal frames butt if be honest there deffo issues with winter if your in a home property that you can have the best double glazing looks good butt the end of the day perimeter cavity are not insulated and external mastic pointing are poor it’s all about the tradesman fact

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4 Reflectance and color

Reflectance and color are the properties of the surfaces and materials that affect how daylight is reflected, transmitted, or absorbed in a building. They include walls, ceilings, floors, furniture, and finishes. Reflectance and color can influence the brightness, contrast, and mood of a space, as well as the energy efficiency and thermal comfort of the building. For example, light-colored and high-reflectance surfaces can increase the diffusion and distribution of daylight, while dark-colored and low-reflectance surfaces can reduce it.

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5 Integration and coordination

Integration and coordination are the processes and strategies that ensure that daylighting is considered as part of the whole building design, rather than as an isolated or added feature. They involve the collaboration and communication among the architects, engineers, contractors, consultants, and users of the building, as well as the use of tools and methods to analyze and evaluate the daylighting performance and impact of the building. Integration and coordination can help achieve the optimal balance between daylighting and other aspects of the building, such as structure, aesthetics, function, safety, and sustainability.

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6 Benefits and challenges

Benefits and challenges are the outcomes and issues that arise from implementing daylighting in a building. They include the environmental, economic, social, and health benefits and challenges of daylighting. For example, daylighting can reduce the energy demand and carbon emissions of a building, lower the operating and maintenance costs, improve the productivity and satisfaction of the occupants, and support the circadian rhythms and well-being of the users. However, daylighting can also pose some challenges, such as the complexity and variability of daylight, the trade-offs and conflicts with other design objectives, the need for user education and participation, and the lack of standards and regulations.

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7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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How can structural design optimize daylighting and reduce energy demand?

1

2

3

4

5

6

7

1 Orientation and shape

2 Fenestration and glazing

3 Shading and control

4 Reflectance and color

5 Integration and coordination

6 Benefits and challenges

7 Here’s what else to consider

Construction

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How can structural design optimize daylighting and reduce energy demand?

1

2

3

4

5

6

7

1 Orientation and shape

2 Fenestration and glazing

3 Shading and control

4 Reflectance and color

5 Integration and coordination

6 Benefits and challenges

7 Here’s what else to consider

Construction

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