The codes adopted by law are published by the International Association of Plumbing and Mechanical Officials (IAPMO), the International Code Council (ICC), and the National Fire Protection Association (NFPA).
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Texas Administrative Code Title 16, Chapter 75 (Air Conditioning and Refrigeration), Rule 75.100 (Technical requirements) allows the contractor to choose between the Uniform Mechanical Code and the International Mechanical Code, the International Fuel Gas Code, and the International Energy Conservation Code. For work permitted or started prior to January 1, 2018, the 2012 editions of these codes apply. For work on or after January 1, 2018, the 2015 codes apply.
Texas Administrative Code Title 16, Chapter 75 (Air Conditioning and Refrigeration), Rule 75.100 (Technical Requirements) adopts the International Residential Code for certain residential buildings in municipalities where no code has been adopted. According to Texas Administrative Code Title 16, Chapter 75 (Air Conditioning and Refrigeration), Rule 75.110 (Applicable Codes), the 2012 edition of the IRC shall be used for work permitted or started before January 1, 2018. For work started after January 1, 2018, the 2015 edition of the IRC has been adopted.
Texas Administrative Code Title 16, Chapter 70 (Industrialized Housing and Buildings), Rule 70.100 (Mandatory Building Codes) adopts the 2015 edition of the International Mechanical Code for industrialized and modular buildings:
(a) Effective August 1, 2017, all industrialized housing and buildings, modules, and modular components, shall be constructed in accordance with the codes referenced in subsection (c) - (j).
(f) The International Mechanical Code, 2015 edition, published by the International Code Council, is adopted as the Mechanical Code of the Texas Industrialized and Buildings Program.
Disclaimer: The library's list of adopted codes is not exhaustive. We include only the adoptions that the library has found relevant as building codes. State laws quoted on this page are not the official versions of the law. See the Texas Constitution and Statutes website.