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The pilot version, LEED New Construction (NC) v1.0, led to LEED NCv2.0, LEED NCv2.2 in 2005, LEED 2009 (a.k.a. LEED v3) in 2009, and LEED v4 in November 2013. LEED 2009 was depreciated for new projects registered from October 31, 2016. [58] LEED v4.1 was released on April 2, 2019. [59]
LEED for Neighborhood Development (LEED-ND), where "LEED" stands for Leadership in Energy and Environmental Design, is a United States–based rating system that integrates the principles of smart growth, urbanism, and green building into a national system for neighborhood design. LEED certification provides independent, third-party ...
The LEED Green Building Rating System (LEED) is a program that provides third-party verification of green buildings. The LEED program rates commercial buildings, homes, neighborhoods, retail, healthcare, schools, including every phase of the respective building lifecycle, including design, construction, operations, and maintenance.
The LEED v4 Handbook posits that indoor air quality is "one of the most pivotal factors in maintaining building occupants' safety, productivity, and well-being." [ 10 ] Ventilation
It was established as the Green Building Certification Institute in January 2008 with the support of the U.S. Green Building Council to provide independent oversight of the Leadership in Energy and Environmental Design (LEED) project certification and professional credentialing processes.
LEED v4 daylighting standards are the most current as of 2014. The new standards are similar to the old standards, but also intend to "reinforce circadian rhythms, and reduce the use of electrical lighting by introducing daylight in the space. [48] Two options exist for achieving the maximum value of these two most recent points.
The LEED AP exams consist of two parts, the LEED Green Associate exam and the applicable LEED AP specialty exam; each part contains 100 randomly delivered multiple choice questions and each part must be completed in 2 hours. Individuals must score at least 170 out of 200 in order to pass.
In 2019, Winthrop Management, with the help of sustainability consulting firm evolveEA, achieved LEED Silver Certification for the US Steel Tower under the Existing Buildings: Operations + Maintenance rating system. [22] The building is one of the largest LEED for O+M: Existing Buildings V4 office buildings in the world.