EXPLORING GREEN BUILDING COUNCILS AROUND THE WORLD

 

As climate change and environmental degradation threaten our planet, embracing sustainable building practices has never been more urgent. Green Building Councils (GBCs) across the globe are championing this cause by promoting eco-friendly construction through innovative rating systems, certifications, and advocacy. These organizations are instrumental in driving the creation of buildings that not only conserve energy and resources but also enhance the health and well-being of their occupants. While numerous countries have established their own councils, it is vital to shine a spotlight on the inspiring initiatives in the Philippines—a country uniquely positioned to confront climate risks while also seizing the vast opportunities for green growth. Together, we can pave the way for a sustainable future.

OBJECTIVE

In my previous blog articles, I have consistently shared my hands-on experiences with industrial projects, including solutions for regulating carbon emissions from manufacturing plant boilers, modifying sewage systems for efficient tallow fat collection, and ensuring the proper maintenance of wastewater treatment plants. At that time, concepts like "sustainability" and "sustainable architecture" were absent from technical discussions. It wasn't until five to ten years later, while working abroad, that I began to encounter these terms. I distinctly recall my time in Singapore when I first met third-party inspectors from ISO, LEED, and similar organizations. The sheer volume of paperwork they required felt overwhelming and intrusive, momentarily interrupting my workflow on-site. I even thought it was a burdensome distraction. However, over the course of my career, I came to understand the profound importance of sustainability in the building and construction industry. This realization prompted me to delve deeper into sustainable architecture, leading me to pursue certification. Now, I'm excited to share this valuable knowledge and my work experiences with my followers, emphasizing the vital role sustainability plays in our field.

Below is a curated list of notable Green Building Councils and systems globally, with a special focus on how the Philippines is making strides in sustainable architecture and development.

1. U.S. Green Building Council (USGBC) – United States

One of the most widely recognized green building rating systems globally, Leadership in Energy and Environmental Design (LEED), was established by USGBC in 1993. LEED provides certification serving over 180 countries for various building types, including new construction, interiors, homes, and neighborhoods. It emphasizes energy efficiency, indoor environmental quality, and sustainable site development.

Website: https://www.usgbc.org/

2. Building Research Establishment (BRE) – United Kingdom

Building Research Establishment Environmental Assessment method (BREEAM) is the world’s first sustainability assessment method for buildings. It evaluates performance in energy, health and wellbeing, land use, pollution, transport, and waste, among others. BREEAM was launched by Building Research Establishment (BRE) in the United Kingdom, an organization which was established as early as 1921. BREEAM is widely used in Europe and other international markets.

According to Wikipedia: “BRE is a former UK government national laboratory that was privatised in 1997. BRE provides research, advice, training, testing, certification and standards for both public and private sector organisations in the UK and abroad.”

Website: https://bregroup.com/

3. Green Building Council of Australia (GBCA) – Australia

Established in 2002, GBCA, which originated in Australi,a created the Green Star, a comprehensive sustainability rating system for buildings, fitouts, and communities. It aims to reduce the environmental impact of development while promoting economic and social benefits. Serves primarily in Australia, but also serves a a model for other regions.

Website: https://www.gbca.au/

4. Canada Green Building Council (CaGBC) – Canada

While CaGBC administers LEED Canada, it also offers the Zero Carbon Building Standard, which focuses on minimizing greenhouse gas emissions across a building’s lifecycle. CaGBC was established and operated in Canada in the year 2002.

Website: https://www.cagbc.org/

5. Green Building Council Indonesia (GBCI) – Indonesia

Established in 2009, GBCI created Greenship, Indonesia's own green rating tool, tailored to local environmental, economic, and cultural conditions. It promotes energy efficiency, water conservation, and material sustainability. Greenship is a National system, but also with regional influence.

Website: https://gbcindonesia.org/

6. Indian Green Building Council (IGBC) – India

A part of the Confederation of Indian Industry, IGBC has developed rating systems to address the unique needs of Indian architecture and urban environments. IGBC Rating Systems (including homes, schools, and existing buildings). IGBC was established on 2001 in India with influence primarily in India.

Website: https://igbc.in/

7. Philippine Green Building Council (PHILGBC) – Philippines

• The Philippine Green Building Council developed the Building for Ecologically Responsive Design Excellence (BERDE) system in response to the country’s need for localized, climate-responsive green building criteria. BERDE evaluates environmental performance in energy and water efficiency, waste management, indoor air quality, and sustainable materials. It also supports the national government's efforts to achieve resilient and sustainable communities. PHILGBC was established in the Philippines in 2007. BERDE certification system primarily serves on a national level.

Website: https://www.philgbc.net/

FINAL THOUGHTS

Green Building Councils around the world are revolutionizing the way we design, construct, and manage our sustainable built environments. Aside from the list I provided above, there are still a lot of organizations and assessment systems established worldwide. While global standards like LEED and BREEAM establish high benchmarks, local initiatives such as BERDE in the Philippines showcase the need for solutions tailored to specific contexts. As sustainability becomes a key element of national development strategies, the role of organizations like the Philippine Green Building Council (PHILGBC) is increasingly significant. These councils do more than offer benchmarks and certifications; they ignite a transformative cultural shift toward creating greener, healthier, and more resilient spaces for everyone.

Ar. JOEY CASTANEDA

Sustainable Architecture

Link in account for architectural works.

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Photo attribution:

Cover Photo (Conference Room) courtesy of https://pixabay.com/

Swayam Course Study Materials (from the course lecture I attended)

BERDE Logo Image CTTO:

https://pinoybuilders.ph/wp-content/uploads/2022/05/BERDE.png

BUILDING IN HARMONY WITH EARTH: How Green Buildings Consider the Ground on Site

When considering green buildings, many of us are inclined toward cutting-edge features like solar panels and smart HVAC systems. Yet, one of the most critical aspects of sustainable architecture is the relationship between our structures and the Earth itself. From the nourishing soil beneath our feet to the carefully chosen materials we utilize and the waste we produce, every element of sustainable construction aims to significantly reduce our ecological footprint. This article delves into how eco-conscious building practices not only prioritize this vital connection with our planet but also strive for excellence by adhering to esteemed certifications like LEED (Leadership in Energy and Environmental Design) and BREEAM (Building Research Establishment Environmental Assessment Method). By meeting such high environmental standards, we can create buildings that are not only efficient but also harmonious with the Earth.

OBJECTIVE

This is the last of the five crucial environmental aspects I have yet to address. We began with fire, where I discussed solar panel systems; then moved on to water, guided you with rainwater harvesting systems; followed by space, where I highlighted the benefits of natural lighting; and air, focusing on enhancing indoor environmental quality(IEQ). In this article, we turn our attention to Earth, which is generally as vital as the others. However, in my own personal opinion, I would give more credit to this one since this is where we get most of the building materials that actually provide strength to our structures. Moreover, here is where we actually anchor our structure that protects lives during times of disaster. So I guess, one of my favorite bands, "Earth, Wind, and Fire," knows about this as well (just kidding aside).

This article aims to inspire awareness and foster advocacy among all stakeholders involved in creating truly sustainable projects, including architects, construction professionals, clients, and students. Together, we can make a significant impact on the planet where we build our green buildings and strive towards a sustainable future.

HOW GREEN BUILDINGS CAREFULLY TREAT THE EARTH AS AN ENVIRONMENTAL ASPECT:

1. Site: Choosing Land Responsibly

The environmental impact of a building begins with its location. Embracing sustainable development means choosing sites that have already been disturbed or developed, such as brownfields or abandoned urban lots, instead of encroaching upon untouched land and thriving ecosystems. Additionally, selecting a location that is seamlessly connected to public transportation, pedestrian pathways, and essential services not only enhances accessibility but also significantly reduces our reliance on cars, fostering a more sustainable and vibrant community.

Green Certification Tie-in: LEED awards points for building on previously developed land, near existing infrastructure, and for minimizing site disturbance.

Example: The Bullitt Center in Seattle is built on an urban infill site, designed for net-zero energy and optimized for sunlight and transit access.

2. Soil: Protecting the Foundation of Life

Soil is an invaluable resource that often goes unappreciated in the construction industry. It not only stores carbon but also nurtures vibrant plant life and filters our precious water supply. Embracing green building practices, we can safeguard this essential element by preventing erosion, avoiding soil compaction, and protecting topsoil during excavation. Effective techniques such as installing sediment control fencing, covering exposed areas, and employing phased construction planning can truly make a difference, allowing us to honor and preserve the richness of our soil for future generations.

Green Certification Tie-in: LEED encourages erosion and sedimentation control through its Sustainable Sites category.

Example: The Center for Sustainable Landscapes in Pittsburgh used protective geotextiles and staged grading to minimize disruption to the site's original soil profile.

The Center for Sustainable Landscapes in Pittsburgh

3. Vegetation: Preserving and Restoring Green Cover

Vegetation is not merely a decorative touch; it is an essential environmental treasure. Sustainable building projects prioritize the preservation of mature trees and embrace native plants that thrive with minimal water and upkeep. Elements like green roofs and living walls serve not only to insulate buildings but also to capture rainwater and enrich our ecosystems. Together, they create vibrant spaces that foster biodiversity and connect us to the natural world.

Green Certification Tie-in: LEED awards credits for protecting or restoring habitats and maximizing open space.

Case Study: Bosco Verticale in Milan integrates more than 900 trees and 20,000 plants into its vertical façade, reducing smog and supporting urban biodiversity.

Bosco Verticale in Milan 

4. Materials: Sourcing from the Earth Responsibly

Sustainable buildings embody a commitment to thoughtful material choices, embracing options that are locally sourced, recyclable, or rapidly renewable. Envision materials like elegant bamboo, FSC-certified wood, resilient recycled steel, and natural straw bales, all of which contribute to a greener future. By prioritizing materials with low embodied energy, we not only enhance the beauty of our spaces but also significantly reduce carbon emissions throughout the building's lifecycle, paving the way for a more sustainable world.

Grange Porcher, a former weaving mill,
Le Curetet, Nivolas-Vermelle, Isère. Rammed earth wall.

Rammed Earth:

Rammed earth is a time-tested, sustainable material made by compacting layers of damp earth into a solid wall. It offers natural insulation, durability, and a unique aesthetic. Because it often uses soil from the site, it greatly reduces transportation-related emissions. Rammed earth also supports passive solar design by regulating interior temperatures due to its high thermal mass.

Green Certification Tie-in: LEED credits materials that are regional, recycled, and low-emitting.

Example: Grange Porcher (See photo above), a former weaving mill, Le Curetet, Nivolas-Vermelle, Isère used rammed earth wall.

5. Construction Waste: Reducing What Goes to Landfills

Construction activities generate a staggering amount of waste, contributing up to 30% of all landfill content. However, green building initiatives champion the cause of sustainability by prioritizing waste reduction through innovative recycling methods, the reuse of materials, and the incorporation of prefabricated components. By thoughtfully planning for waste management from the outset of a project, we can significantly lower costs while safeguarding our environment for future generations. Embracing this approach not only enhances the appeal of our projects but also reflects a profound commitment to responsible construction practices.

Green Certification Tie-in: LEED’s Materials and Resources category rewards construction waste management plans and high diversion rates.

Example: The San Francisco Public Utilities Commission building diverted more than 80% of its construction waste from landfills by implementing rigorous recycling practices.

The San Francisco Public Utilities Commission building

The building features an innovative wing structure, which contains several wind turbines to generate 8-10% of the electricity needed by the building. The wind analysis for this was conducted by Case Van Dam and Bruce White of the College of Engineering at UC Davis.

Source: Wikimedia Commons (https://commons.wikimedia.org/wiki/)

6. Operational Waste: Managing Waste During Occupancy

The environmental impact of a building continues to resonate long after construction is complete. Green buildings are thoughtfully designed with innovative systems that effectively separate recyclables, compostables, and landfill waste, fostering a culture of sustainability. Many of these remarkable structures proudly display educational signage, guiding occupants toward adopting eco-friendly habits. Furthermore, some projects harness the power of smart technology to monitor waste generation in real time, offering valuable insights for continuous improvement. By embedding these practices, we can create spaces that not only benefit the environment but also inspire a collective commitment to a greener future.

Green Certification Tie-in: LEED encourages design strategies and infrastructure for effective waste management throughout the life of the building.

Case Study: Dockside Green in Victoria, Canada, features an integrated waste management plan, including composting, recycling, and greywater treatment systems, keeping its environmental impact to a minimum even during full occupancy.

Biomass energy generator of Dockside Green.

Solar panels, wind turbines, condo sewage plant of Dockside Green.

FINAL THOUGHTS

Building sustainably transcends energy efficiency and carbon offsets; it embodies respect for our planet. As responsible architects, builders, stakeholders, and all concerned, we must give our full respect to the land we build on, the materials we use, and the waste we generate. By integrating Earth-centered principles into site selection, soil preservation, vegetation management, and material choices, we can design buildings that contribute positively to the environment. Renowned global green certifications like LEED, BREEAM, and WELL provide actionable frameworks to guide us in this pursuit. As we forge ahead in constructing our future, let us remain mindful of the ground we occupy—this commitment is vital for achieving a truly sustainable world.

Ar. JOEY CASTANEDA

Sustainable Architecture

Link in account for architectural works.

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Photo attributions:

Center for Sustainable Landscapes in Pittsburgh <a href="https://commons.wikimedia.org/wiki/File:Center_for_Sustainable_Landscapes,_Phipps_Conservatory,_2015-10-10,_02.jpg">Cbaile19</a>, CC0, via Wikimedia Commons

Bosco Verticale in Milan - Chris Barbalis cbarbalis, CC0, via Wikimedia Commons<a href="https://commons.wikimedia.org/wiki/File:Bosco_verticale,_Milan,_Italy_(Unsplash).jpg">Chris Barbalis cbarbalis</a>, CC0, via Wikimedia Commons

San Francisco Public Utilities Commission building

UC Davis College of Engineering, CC BY 2.0 <https://creativecommons.org/licenses/by/2.0>, via Wikimedia Commons

Biomass energy generator of Dockside Green

John Newcomb, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons

Solar panels, wind turbines, condo sewage plant of Dockside Green

John Newcomb, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons

ENHANCING INDOOR ENVIRONMENTAL QUALITY IN GREEN BUILDINGS

BedZED eco-village, London

In the pursuit of sustainability, green buildings prioritize not only environmental efficiency but also the health and well-being of their occupants. A critical component of this approach is Indoor Environmental Quality (IEQ) — a measure of how indoor environments impact comfort, health, and productivity. From fresh air ventilation to acoustic control, improving IEQ is essential for modern buildings aiming to be truly sustainable. This article explores six core elements of IEQ and how they contribute to healthier, greener spaces.

OBJECTIVE

This topic encompasses various tangible environmental aspects: earth, air, water, fire, and space. In my earlier discussions, I explored the solar power system, representing "fire" in terms of energy; the rainwater harvesting system, a key component of "water"; and most recently, natural lighting, which corresponds to "space." Now, let's focus on Indoor Environmental Quality (IEQ), a crucial element linked to "air."

My goal is to deliver insights from my studies and work experiences in a straightforward and engaging way, making them accessible to everyone. I understand that many professionals struggle to persuade their clients to embrace sustainability in their projects. In my previous blog, "CLIENT-CENTERED SUSTAINABILITY: TailoringSolutions to Meet Client Expectations in Sustainable Architecture," I shared practical strategies for overcoming these challenges. By considering these suggestions, including the environmental aspect I will discuss in this article, we can work together to promote awareness and advocate for a more sustainable future.

GREEN BUILDING DESIGN STRATEGIES (ENHANCING THE SIX CORE ELEMENTS OF "IEQ"):

1. Healthy Environment

A green building starts with the commitment to a healthy indoor environment. This means designing spaces that reduce occupant exposure to toxins, support mental well-being, and encourage overall wellness.

Strategies include:

• Maximizing natural daylight and views to the outdoors

• Maintaining comfortable temperature and humidity levels

• Using biophilic design elements, like indoor plants and natural textures

Example: The Bullitt Center in Seattle is often cited as one of the greenest commercial buildings in the world. It uses non-toxic materials, prioritizes natural lighting, and offers a visually pleasing environment that reduces stress and enhances well-being.

Bullitt Center, Seattle

2. Fresh Air Ventilation

Good indoor air quality starts with adequate ventilation. Ventilation is vital for removing stale air and introducing fresh air, thus diluting indoor pollutants and enhancing comfort. Green buildings use mechanical and natural systems to bring in fresh air and remove stale indoor air. Here are key strategies:

• Heat Recovery Ventilators (HRVs) to retain energy while bringing in fresh air

• Demand-controlled ventilation based on occupancy and CO₂ levels, and to optimize airflow while conserving energy.

• Use of operable windows in passive designs

Case Study: The Edge in Amsterdam uses a sophisticated smart ventilation system that monitors occupancy and air quality, adjusting ventilation accordingly. This ensures constant fresh air flow and energy efficiency, contributing to high occupant satisfaction.

The Edge, Amsterdam

3. Exhaust Systems

These systems expel pollutants and humidity directly outdoors, maintaining better air quality indoors. Proper exhaust ventilation is essential for eliminating localized sources of pollutants, especially in:

• Kitchens

• Bathrooms

• Laundry areas

• Utility rooms

Green buildings ensure:

• Exhaust fans vent directly to the outdoors

• Systems are zoned to prevent air transfer between spaces

• Use of energy-efficient fans and ducts

Example: In LEED-certified residential buildings, such as those in the BedZED eco-village in London (Please see the cover photo), separate exhaust systems are designed for different zones of the home, reducing cross-contamination and maintaining a hygienic indoor environment.

4. Low VOC Materials and Compounds

Volatile Organic Compounds (VOCs) found in paints, adhesives, flooring, and furnishings can off-gas harmful chemicals for months after application. Excessive exposure to VOCs can lead to health issues like:

• Headaches

• Respiratory irritation

• Long-term chronic effects

Green buildings opt for low or zero-VOC materials to improve indoor air quality and reduce occupant health risks. To avoid this, green buildings use:

• Low- or zero-VOC paints, sealants, and finishes

• Certified GreenGuard or GREENGUARD Gold furniture and products

• Non-toxic insulation and adhesives

Case Study: The Center for Sustainable Landscapes at Phipps Conservatory in Pittsburgh used low-VOC paints, adhesives, and sealants throughout construction, contributing to its WELL Building Standard certification for promoting occupant health.

Phipps Conservatory in Pittsburgh

5. Dust-Free Interiors

Reducing dust buildup is key to minimizing allergens and particulate matter that compromise air quality. Dust can carry allergens, bacteria, and pollutants. To minimize dust accumulation, green building designs emphasize:

• Smooth, easy-to-clean surfaces

• Integrated entryway mats and grilles to trap dirt

• Central vacuum systems or HEPA-filter vacuums

• High-efficiency air filters (MERV 13 or above)

Example: In schools built to CHPS (Collaborative for High Performance Schools) standards, special attention is given to materials that resist dust accumulation, along with filtered ventilation systems to promote healthier learning environments. 

Portable air cleaners or purifiers are also widely used in homes and offices. If you are interested, you might want to check out this model.

6. Acoustic Control

Sound plays a major role in occupant comfort and productivity. Noise pollution negatively affects productivity, concentration, and mental health. Green buildings aim for a quiet, acoustically comfortable indoor environment by:

• Using acoustic ceiling tiles and baffles

• Installing sound-insulated walls and floors

• Incorporating sound-absorbing materials in the interior finishing and furnishings, such as carpeting and upholstered furniture

• Applies spatial planning to manage noise levels and minimize sound pollution. Strategic layout to separate quiet and noisy areas

Case Study: The Bloomberg European Headquarters in London incorporates acoustic baffles, soundproofing materials, and intelligent layout design to control reverberation and ambient noise, contributing to its BREEAM “Outstanding” rating.

Bloomberg European Headquarters, London

FINAL THOUGHTS

Indoor Environmental Quality (IEQ) stands at the forefront of sustainable building design, significantly influencing both our physical well-being and cognitive abilities. By emphasizing clean air, non-toxic materials, effective sound control, and overall comfort, green buildings not only contribute to environmental preservation but also enrich the human experience. As the demand for healthier living and working environments continues to rise, prioritizing IEQ will drive groundbreaking advancements in sustainable architecture, making our spaces not just livable but truly thriving.

Ar. JOEY CASTANEDA

Sustainable Architecture

Link in account for architectural works.

Linktree account for artworks.

Photo Attributions:

BedZED eco-village, London

By Tom Chance, <a href="https://creativecommons.org/licenses/by/2.0" title="Creative Commons Attribution 2.0">CC BY 2.0</a>, <a href="https://commons.wikimedia.org/w/index.php?curid=11884918">Link</a>

Phipps Conservatory in Pittsburgh 

<ahref="https://commons.wikimedia.org/wiki/File:Phipps_Conservatory_%26_Botanical_Gardens_132.jpg">Daderot</a>, Public domain, via Wikimedia Commons

Bloomberg European Headquarters in London

 <ahref="https://commons.wikimedia.org/wiki/File:Bloomberg_European_Headquarters,_London.jpg">DAVID HOLT</a>, <a href="https://creativecommons.org/licenses/by/2.0">CC BY 2.0</a>, via Wikimedia Commons

The Edge, Amsterdam (MrAronymous, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons)

Bullitt Center, Seattle (Joe Mabel, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons)

HARNESSING THE SUN: THE ROLE OF NATURAL LIGHTING IN SUSTAINABLE BUILDING DESIGN

Natural Lighting

In the dynamic realm of sustainable architecture, while innovative technologies like solar panels and rainwater harvesting systems take center stage, we must not overlook the power of natural lighting. This design strategy is not just a means to brighten interiors; it is a crucial element that significantly reduces energy consumption, boosts occupant well-being, and minimizes carbon footprints. Embracing daylighting is a smart, passive solution that not only enhances the aesthetic appeal of a space but also aligns perfectly with the overarching goals of green building. Investing in natural lighting can lead to a healthier, more sustainable environment for all.

OBJECTIVE

Building on my previous discussions about solar panels and rainwater harvesting systems, I want to highlight another crucial architectural element: natural lighting. This aspect is one of the key reasons I chose to pursue a career in architecture, inspired by the profound works of celebrated architects like Tadao Ando, Mies Van Der Rohe, and Le Corbusier. Each of them brilliantly incorporated natural lighting into their designs, demonstrating its transformative power. As someone who is very visual, I believe the essence of a space is most effectively conveyed through an architect's approach to natural light, rather than through artificial lighting created by advanced technologies. We need to embrace the beauty and warmth that natural light brings to our environments. Although I derived most information from my studies and work experiences, I am sharing these thoughts in a very light and accessible language to engage both practitioners, students, and those without a technical background, encouraging a broader appreciation for this fundamental architectural principle.

THE FUNDAMENTALS OF NATURAL LIGHTING IN ARCHITECTURE

Natural lighting, also known as daylighting, is the practice of using sunlight to brighten a building’s interior. Unlike artificial lighting, which relies on electricity and produces heat, natural lighting is free, plentiful, and environmentally friendly. Effective building design incorporates daylighting by carefully considering the orientation, window placement, and architectural form of the structure. This approach allows us to take advantage of the sun's natural light instead of working against it.

ENVIRONMENTAL BENEFITS

Reduced Energy Consumption

Buildings that harness daylight efficiently require less artificial lighting during daytime hours. This not only cuts down on electricity use but also reduces the heat generated by artificial light sources, decreasing the need for cooling and thus lowering HVAC energy loads.

Lower Carbon Emissions

Using natural light means using less power from fossil-fuel-based sources. When paired with solar photovoltaic systems, buildings can significantly reduce their carbon footprint while increasing their self-sufficiency.

HUMAN AND HEALTH BENEFITS

Improved Occupant Well-being

Numerous studies link access to natural light with increased productivity, mood, and comfort. Natural light supports the body’s circadian rhythms, contributing to better sleep quality and overall health.

Visual Comfort

Well-designed daylighting avoids harsh shadows, glare, and artificial flicker. The result is a visually pleasing environment that enhances how we experience space, vital in homes, workplaces, and schools.

DESIGN STRATEGIES FOR MAXIMIZING NATURAL LIGHTING

To optimize natural lighting, architects use a mix of design strategies, including:

• Building Orientation: Aligning buildings along an east-west axis to maximize southern exposure (in the northern hemisphere).

Building Orientation

• Window Placement and Glazing: Thoughtful use of high-performance windows that admit light while controlling heat gain and glare.

Window Placement and Glazing

• Light Shelves and Reflectors: Elements that bounce light deeper into interiors, reducing reliance on electric lighting.

• Skylights and Clerestory Windows: Allowing light from above into central areas, particularly effective in larger or single-story buildings.

Skylights and Clerestory Windows

• Reflective Interior Finishes: Light-colored walls, ceilings, and floors can amplify daylight by reflecting it further into rooms.

INTEGRATION WITH OTHER SUSTAINABLE SYSTEMS

Daylighting works hand-in-hand with other green building features:

1.     Solar Panels: Buildings can be designed to optimize sunlight for both illumination and energy generation.

2.     Smart Lighting Systems: Automated controls adjust artificial lighting based on natural light levels, maintaining comfort while saving energy.

Smart Homes

3.    Rainwater Harvesting: Roof designs can serve dual functions—collecting rainwater and channeling light through skylights or solar tubes.

CASE STUDIES/EXAMPLES

Some of the world’s most celebrated green buildings—like the Bullitt Center in Seattle or the Edge in Amsterdam—prioritize natural lighting. These buildings report not only reduced energy bills but also increased occupant satisfaction, setting the bar for daylight-centric design.

Bullitt Center, Seattle

The Edge, Amsterdam

CHALLENGES AND CONSIDERATIONS

While beneficial, natural lighting requires thoughtful planning to avoid issues like:

• Heat Gain and Glare: Too much sunlight can lead to discomfort. Shading devices like louvers, blinds, and brise-soleils are essential.

• Initial Costs: High-performance windows and daylighting control systems can be expensive, but the long-term savings and occupant benefits often outweigh the upfront investment.

FINAL THOUGHTS

Natural lighting is not merely a design preference; it is essential for sustainable architecture. By minimizing energy consumption, promoting better health, and harmonizing with solar and water systems, daylighting presents a compelling and passive strategy for building greener structures. Whether you are embarking on a new design or upgrading an existing space, thoughtfully considering how the sun illuminates your area can lead to remarkable advantages for both the environment and the well-being of its occupants.

Ar. JOEY CASTANEDA

Sustainable Architecture

Link in account for architectural works.

Linktree account for artworks.

Photo Attribution:

All photos courtesy of Pixabay.com: https://pixabay.com/