Mechanical Code Amendments

2018 Washington State Mechanical Code

2018 International Mechanical Code

  •  Includes adoption of 2018 International Fuel Gas Code,  2018 NFPA 58 & 2017 NFPA 54
  •  Effective February 1, 2021 

2015 Washington State Mechanical Code

2015 International Mechanical Code

  •  Includes adoption of 2015 International Fuel Gas Code,  2014 NFPA 58 &2014 NFPA 54
  •  Effective July 1, 2016 (with updates effective Oct. 1, 2017)

2012 Washington State Mechanical Code

2012 International Mechanical Code

  • Includes adoption of 2012 International Fuel Gas Code,  2011 NFPA 58 & 2012 NFPA 54
  • Effective July 1, 2013

2009 and Older Washington State Building Code

2009 International Mechanical Code 

  • Includes adoption of 2009 International Fuel Gas Code,  2008 NFPA 58 &  2009 NFPA 54
  • Effective July 1, 2010  

2006 International Mechanical Code

  • Includes adoption of 2004 NFPA 58 & 2006 NFPA 54
  • Effective July 1, 2007

 2003 International Mechanical Code

  • Includes adoption of 2001 NFPA 58 & 2002 NFPA 54
  • Effective July 1, 2004