ANSI/ASHRAE/IES Standard 90.1- 2016 Energy Standard for Buildings Except Low-Rise Residential Buildings (I-P Edition)

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Standard 90.1 has been a benchmark for commercial building energy codes in the United States and a key basis for codes and standards around the world for more than 35 years. This standard provides the minimum requirements for energy-efficient design of most buildings, except low-rise residential buildings. It offers, in detail, the minimum energy efficiency requirements for design and construction of new buildings and their systems, new portions of buildings and their systems, and new systems and equipment in existing buildings, as well as criteria for determining compliance with these requirements. It is an indispensable reference for engineers and other professionals involved in design of buildings and building systems.

This 2016 edition comprises numerous energy-saving measures and incorporates changes from more than 125 addenda. It also includes the following:

Format changes to improve usability and readability:

  • One-column format for easier reading
  • Exceptions separated, indented, and set apart with a smaller font size
  • Italicized defined terms
  • Changes to table formats to provide contrast between rows

Structural changes:

  • A new Reference Standard Reproduction Annex 1 is provided at the end of the document. Section 5.1.4 now cites ASHRAE Standard 169 as the source for climatic data, and Annex 1 contains extracts of tables and figures from that standard for the reader’s convenience.
  • Two new climate zones (0A/B) have been added to all prescriptive requirements tables.

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