Currently Adopted Codes


  • Underground gas piping is not to be used as a grounding electrode. All underground gas piping will require a dielectric coupler to be installed in the system as it exits the earth and prior to entering the structure.


ICC A117.1 (Latest Edition)

2021 International Residential Code

2021 International Building Code

2021 International Mechanical

2021 International Fuel & Gas Code

2009 International Energy Conservation Code

2021 Fire Code

2021 Plumbing Code

2020 National Electric Code

2018 SC Modifications (see LLR for listing of modifications) [PDF]