Green buildings protect natural resources by using alternative materials and limiting on-site grading, while simultaneously producing less emissions, lower utility costs, and encouraging employee productivity.
Green buildings that stand out are those that use nature for ventilation and sunlight access, boosting health while simultaneously considering a life cycle assessment for each material and practice used within.
Energy Efficiency
Green buildings use innovative technologies and designs to reduce energy usage, thus cutting energy bills and carbon footprints. Strategies include using high-efficiency windows and insulation; using energy saving appliances from Energy Star; using HVAC systems with lower power usage; renewable energy systems like solar panels as well as alternative sources.
Green construction practices aim to minimize waste throughout a building’s lifespan by using materials with lower environmental impacts and using recycled products whenever possible, as well as employing methods which limit landfill space usage.
Other eco-friendly features of green buildings include water efficiency measures like rainwater harvesting and low-flow showers, toilets and faucets; reduction of greenhouse gas emissions by using alternative fuels for heating, cooling and transportation; biophilic design principles aim to connect people with nature in order to foster health and productivity for occupants; whilst life cycle analysis (LCA) allows builders to assess a building’s full impact in terms of extracting and processing raw materials as well as energy consumption, water use and waste outputs.
Water Efficiency
Buildings account for an overwhelming percentage of greenhouse gas emissions, energy use and water waste around the world. Implementing green building strategies helps mitigate their negative impact while simultaneously improving human health and comfort, cutting maintenance costs and creating long-term value.
Design is one of the key aspects of green buildings, as these structures often take advantage of natural environmental forces to lower heating and cooling demands and increase indoor comfort. One such building in Seattle known as Bullitt Center takes full advantage of directional airflow patterns as well as sunlight’s warming rays to reduce heating and cooling needs while simultaneously improving indoor comfort.
Green buildings take steps such as xeriscaping (using plants that need little water) and rainwater collection to minimize impact on their surroundings. They also employ water-efficient appliances and fixtures, promote recycling of grey water, minimize water run-off by employing stormwater management techniques and use stormwater management strategies. Finally, life cycle analysis (LCA) is another common strategy employed by green builders to assess all impacts from construction through use and determine which practices are most eco-friendly.
Materials
Green buildings are an essential element of sustainable urban development that aim to combat climate change by minimizing energy and water consumption. Their design emphasizes sustainable sourcing, recycling and waste management practices.
By choosing materials with lower embodied energy, such as wood from forests certified to third party standards, rapidly renewable plant materials and recycled metals – materials which also have lower replacement needs in the long run – architects can lower embodied energy.
Green buildings often utilize salvaged materials as part of their green building efforts, giving construction waste an additional life before heading straight for landfill. Furthermore, selecting materials with low or no toxic chemical emissions are also key. Finally, green buildings often prioritize indoor air quality by installing ventilation systems designed to promote healthy indoor environments with plenty of natural lighting, reduced exposure to harmful chemicals, and biophilic design elements that promote overall wellness in their design.
Indoor Air Quality
Green buildings place equal importance on healthy indoor air quality as energy efficiency, using ventilation strategies that promote cross-ventilation to minimize artificial air conditioning needs, using high-efficiency filters to remove harmful particles from circulating airflow and selecting flooring materials and furnishings that emit less volatile organic compounds (VOCs).
VOCs are just one of many harmful pollutants that can wreak havoc on occupant health, leading to respiratory complications and other forms of impairment. Additional forms of pollution include combustion byproducts such as carbon monoxide, particulate matter and environmental tobacco smoke; plus radon emissions.
Recent studies have demonstrated the correlation between increased indoor air quality (IAQ) and lower respiratory conditions among building occupants, and improved cognitive functioning. Many Green Building programs – LEED and WELL among them – now include IEQ/IAQ requirements as part of certification requirements, creating greater awareness between IEQ/IAQ, sustainability and human health.