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LEED (Leadership in Energy and Environmental Design) is a pioneering green building evaluation system for energy and environmental design. It was initiated by the United States Green Building Council (USGBC). Four aspects are used to evaluate building green standards. Its purpose is to effectively reduce the negative impact of the environment and residents in the design, symbolizing pioneering, innovation, environmental protection and social responsibility.
LEED represents the highest benchmark for green buildings. It is considered to be the most complete, authoritative and influential evaluation standard among various building environmental protection evaluation, green building evaluation and building sustainability evaluation standards in various countries around the world. LEED has been listed as a statutory mandatory standard in some states and some countries in the United States.
The latest version of LEED is LEED V4. Compared with the previous certification process, the performance-based LEED V4 is more lively, requiring measurement results throughout the life cycle of a building, and paying more attention to human health and the environment. LEED is divided into four certification levels: certification level, silver level, gold level, and platinum level.
From 2006 to 2016, China’s LEED certification program has a compound annual growth rate of 77%, making it the largest LEED certification market outside the United States. In addition, the "2017 China Green Building Report: From Green to Healthy" pointed out that as of August 2017, China has accumulated more than 48 million square meters of LEED certified projects covering 54 cities.
LEED certification usually focuses on physical buildings and related services, rather than the health of building occupants. Bonus points in design choices include: energy-saving measures, waste recycling, use of local products instead of imports, low-emission materials, etc.
According to statistics from the U.S. Green Building Council, LEED-certified buildings have the following advantages:
1. Lower cost (operating expenses reduced by 8%-9% on average)
2. Higher profitability (building value increased by 7.5% on average)
3. More energy-saving (average energy-saving in buildings is 24%-50%)
4. Fresher (CO2 emissions reduced by 33%-39% on average)
5. More environmentally friendly (average reduction in water consumption by 40%)
6. Less waste (average reduction of solid waste by 70%)
7. Higher efficiency (employee productivity increased by 2%-16% on average)
The WELL building standard was originally established in 2013 by Delos. IWBI (International WELL Building Research Institute) is now operating and managing, and IWBI and GBCI (Green Building Certification Institute) work together to conduct third-party certification. In March 2015, GBCI and IWBI formally introduced the WELL building standard into China.
As the WELL building certification standard that started the era of healthy buildings, it is a milestone that considers the relationship between human health and the built environment, and shows that humans have made further exploration of the built environment. The WELL building standard is the OSCAR in the construction industry. It is the world's first indoor building standard specifically for the health and comfort of people. It has a cooperative relationship with many top scientists, doctors, architects, and health thought leaders.
WELL is a performance-based system that measures, certifies and monitors the characteristics of the built environment such as air, water, nutrition, light, health, comfort and spirit, and is a powerful supplement to the LEED and other green building scoring systems. These seven categories are truly comprehensive assessments of health from physical to mental. At the same time, in some points, the needs of people with disabilities and people with special physical conditions (such as food allergies) are also taken into account, which fully reflects the humanistic care of the WELL certification system.
WELL certification is based on medical research institutions, exploring the relationship between the building and the health and well-being of its occupants, allowing owners and employers to understand that their architectural space design is conducive to improving health and well-being, and as they expected Running.
This standard is divided into three levels, including silver, gold and platinum.
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