Skip navigation links
Code Development
Training and Certification
About Us
Industry Links
Contact Us
What's New
Skip navigation links
Members Only
Why Become a Member
How We Help You:Expand How We Help You:
Contact Field Manager
Field Services Assistance
Ask A Code Question
IAPMO Certified Professionals Search
Government Relations
Drought ToolkitExpand Drought Toolkit
Career Center
Uniform Codes Questions & Answers
Water Demand Calculator
Red Cross Relief - Hurricane Harvey
2017 Oregon Plumbing Specialty Code
Appeals Decisions 2017
Petition Filed and Council Appeals Decisions
World Plumbing Day Poster Contest
IAPMO > Home

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.

Here is this week's question:
In the UMC: 1. Does a passageway need 30 inches x 30 inches unobstructed clearance from the attic opening to the mechanical equipment? 2. Does “unobstructed” mean without any box outs or vertical offsets in the passageway and catwalk? 3. Are there any size exceptions to the above questions?
Click here for the answer

              Now Available at the Download Center


US Water Partnership link US Water Partnership link Order California Codes IAPMOnline Link to 2003 - 2012 UPC and UMC Answers & Analysis Online Search Engine Download IAPMO Magazine Articles Read National Standard Plumbing Code Online Learn how we work with WorldSkills
IAPMOnline IAPMOnline IAPMOnline IAPMOnline IAPMOnline