Radon Gas Venting Requirements

Hence typical air venting ducts are not used.

Radon gas venting requirements. The 2010 national building code nbc includes requirements that address radon. Radon measurement systems quality assurance ms qa 2019 exit this standard specifies minimum requirements for quality systems designed to quantify the concentration of radon 222 gas in air by qualified professionals qps and laboratories whose data are intended to be used to determine the need for or success of mitigation. Even though the radon pipe does not extend above the roof as close to the ridge as possible it discharges the radon gas in a safe way while reducing the vent height by 15 to 20 feet. It s not a problem everywhere but the bedrock in some regions produces enough radon for it to concentrate on basements enough to raise the risk of lung cancer.

Steps for installing radon mitigation. Install an active radon vent system consisting of an in line fan installed in a vertical vent pipe extending up from a sub slab collection pipe or mat through the conditioned space of the home and through the roof that uses the fan to pull soil gases up and out of the house. A 3 pvc pipe is the minimum permitted. Soil gas control systems in new construction of buildings schools large buildings.

Parts five and six of the code require that engineers and designers consider radon protection in their designs and ensure control of air leakage and soil gas entry to minimize the level of radon entering a home through the foundation. American national standards addressing radon in new construction. See the guide radon fan. A active radon vent fan is installed to create a permanent and consistent negative pressure within the system.

Asd systems vent radon gas by creating a vacuum in the soil below the foundation. Radon is a radioactive gas and known to be a carcinogen. The radon pipe that vents radon gas from a building is a very important component of a radon abatement system. The negative pressure draws the radon gas to the suction point s where it is sucked through the radon system and vented to a safe elevation above the.

Reducing radon in new construction of 1 2 family dwellings townhouses homes. Determine vent pipe size and location. Run a 3 inch or 4 inch solid pvc schedule 40 pipe like the ones commonly used for plumbing vertically from the gravel layer stubbed up when the slab is poured through the house s conditioned space and roof to safely vent radon and other soil gases outside above the house. Available for purchase from aarst ccah.

The radon mitigation pipe system must be completely sealed so that this cancer causing gas isn t forced back into the home. Keep the vent supported every 8 inches vertically and 6 inches horizontally. Check out some basic requirements for running a radon vent pipe. Maintain a proper slope for condensate drain back.

In this example even though it does not technically adhere to the epa radon mitigation standards it does adhere to the heart of the safety issue.