Tackle the latest version of codes that the entire plumbing and HVACR industry’s code officials, designers, and installers use every day with this valuable new resource. Designed to provide detailed insight into the updates that have been made to the 2009 editions of the International Plumbing, Mechanical, and Fuel Gas Codes®, this book goes one step further by delving into the rationale of why such changes were needed. Code changes are also presented with a focus on real-world application through examples, providing readers with the practical knowledge needed to utilize and enforce the code in everyday work.