How should new duct piping be installed for effective radiation mitigation?

For effective radiation mitigation, new duct piping should be installed with a continuous downward slope. This orientation is critical because it allows any condensation or moisture that may accumulate within the ducts to drain out effectively. If moisture were to stagnate, it could lead to mold growth or other issues that could compromise air quality and reduce the system’s overall efficiency.

Maintaining a downward slope also aids in the proper functioning of the entire HVAC system. Airflow within ductwork relies on gravity to assist in the movement of air. A continuous downward slope helps maintain consistent pressure and ensures that air can flow smoothly through the duct system without creating pockets where air becomes trapped. This reduces the chances of interference with the effectiveness of radiation mitigation techniques that rely on optimal airflow to disperse radon safely and efficiently.

In contrast, elevated points can cause air to stagnate, multiple bends can create resistance and lead to pressure drop issues, and increased wall thickness primarily focuses on durability rather than addressing airflow, which is critical in effective duct performance for radiation mitigation.