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Please note that the World Headquarters facilities located in Ontario, California are currently experiencing a phone outage.  Staff can be reached by email and cellular phones.  We apologize for the inconvenience.

The International Association of Plumbing and Mechanical Officials has been protecting the public’s health and safety for ninety years by working in concert with government and industry to implement comprehensive plumbing and mechanical systems around the world.

As a membership-based association, IAPMO is proud to utilize an open consensus process in the development of our flagship Uniform Plumbing Code® and Uniform Mechanical Code®. These codes are established through scientific research, debate, and analysis, strengthening our position at the forefront of the plumbing and mechanical industries.

The IAPMO Group is a complete service organization, providing code development assistance, industry-leading education, plumbing and mechanical product testing and certification, building product evaluation and a manufacturer-preferred quality assurance program. Each component of the IAPMO Group works toward playing an integral part in protecting the health of people everywhere.

Responding to a request, we are making some of the online Answers and Analysis offered only to IAPMO members available here.

This week’s question is: 
Are exposed waste lines beneath floors, such as, cantilevered or post-supported portions of residences, required to be insulated. It seems evident that the enforcement of this provision would relate to climatic conditions. Because of this factor, are there any guidelines or stipulations relating to the climatic conditions which would allow a relaxation of the requirement for insulating exposed waste pipes? Does Section 313.6 (2003/2006/2009) 312.6 (2012/2015) prohibit this practice
Click here for the answer

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