Ron George, CIPE, CPD, President, Ron George Design & Consulting Services, Newport, Mich.
If you haven't heard of PAPA yet, you soon will. Here's a brief history of what it is and how it came to be. PAPA is an acronym for positive air pressure attenuator. The devices are currently available only for sanitary drain and vent systems designed to the "engineered systems" portions of the plumbing codes and sealed by a professional engineer. The technology was developed at the School of the Built Environment at Heriot Watt University in Edinburgh, Scotland by Professor John Swaffield.
Editor's Note: To wrap up Ron George's analysis of recent changes to the International Plumbing Code, we're including a letter we received regarding Mr. George's analysis and his response. The letter is from Lynne Simnick, senior technical staff, ICC Codes & Standards Development. I read your article "U.
A number of changes to the International Plumbing Code were approved at the International Code Council (ICC) hearings, held at the end of February and the beginning of March in Cincinnati. These changes addressed issues in several areas of plumbing-system design.
The International Codes Council (ICC) hearings were held during the last week of February and the first week of March in Cincinnati. The ICC does an excellent job overall, particularly when it comes to making the hearings accessible to everyone. This includes broadcasting the code hearings live on the Internet.