The International Fuel Gas Code® (IFGC®) establishes minimum requirements for plumbing systems using prescriptive and performance-related provisions. It is founded on broad-based principles that make possible the use of new materials and new plumbing designs. This 2018 edition is fully compatible with all of the International Codes® (I-Codes®) published by the International Code Council. The I-Codes, including this International Plumbing Code, are used in a variety of ways in both the public and private sectors.