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Provisions in the commercial sector of the model codes affect building design and construction factors such as: thermal envelope, water heating, HVAC, and lighting systems. [7] [22] In the 2021 IECC model code, for example, there are provisions that reference ASHRAE 90.1 concerning insulation R-values for opaque parts of the building envelope. [22]
The International Energy Conservation Code (IECC) is a building code created by the International Code Council in 2000. It is a model code adopted by many states and municipal governments in the United States for the establishment of minimum design and construction requirements for energy efficiency .
“Key changes to the 2021 IECC improve efficiency by 9.4 percent and reduce greenhouse gasses by 8.7 percent over the 2018 ... New requirements for insulation, lighting and ventilation testing ...
Advanced lighting control is an effort made by ASHRAE 90.1-2010 to significantly reduce the energy used for lighting by commercial buildings. [ 20 ] The U.S. Department of Energy is improving residential codes by 30% by 2012, in an effort to move to net zero energy homes by 2020.
It provides two approaches to meet this goal: prescriptive and performance-based. The prescriptive path provides specific requirements for building envelopes, mechanical systems, service water heating systems and electrical power/lighting systems. The performance-based pathway requires modeled requirements and plug load controls.
The certifying agency provides details on model inputs, software specifications, and performance requirements. The following is a list of U.S. based energy codes and standards that reference building simulations to demonstrate compliance: ASHRAE 90.1; International Energy Conservation Code (IECC) Leadership in Energy and Environmental Design (LEED)
The International Code Council (ICC), also known as the Code Council, is an American nonprofit standards organization sponsored by the building trades, which was founded in 1994 through the merger of three regional model code organizations in the American construction industry. [1]
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