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C217
Design of Radon Resistant Residential Structures

Jeffrey Havelin, PE

Radon is a colorless, odorless, radioactive gas, which is found in all homes in varying amounts depending on the locality. Radon levels are measured in picocuries per liter of air (pCi/L) where a picocurie is a measure of radioactivity. The national average level within homes is about 1.3 (pCi/L). Smokers who have high radon levels in their homes are at an especially high risk for getting radon-induced lung cancer. Not everyone who is exposed to elevated levels of radon gas will develop lunge cancer, but your risk of getting radon-induced lunge cancer increases as your exposure to radon gas increases.

This course will introduce a step-by-step design procedure on how to build radon resistant residential structures. By specifying various inexpensive construction methods and procedures during construction radon levels can be effectively reduced. A very basic radon reduction system can reduce radon levels as much as 50%; the same system can be easily upgraded to provide additional radon level reduction.

This course is based entirely on the EPA publication EPA /402-K-01-002 Building Radon Out A Step by Step Guide on How to Build Radon-Resistant Homes. This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of course materials. You will be quizzed on the attached document in its entirety.


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NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.

AIA Members: You must take the courses listed under the category "AIA/CES Registered Courses" if you want us to report your Learning Units (LUs) to AIA/CES. If you take courses not registered with AIA/CES, you need to report the earned Learning Units (not qualified for HSW credits) using Self Report Form provided by AIA/CES.

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