What structural concerns may arise from improper radon mitigation?

The choice of sawn lumber floor joists as a concern related to improper radon mitigation focuses on the fact that improper techniques or equipment can lead to inadequate ventilation or humidity control within a structure. This can result in moisture accumulation, which in turn can contribute to deterioration of wooden structural elements, including floor joists made of sawn lumber. If moisture levels rise beyond what the materials can tolerate, it could lead to rot or mold growth, compromising the integrity of the joists.

In radon mitigation efforts, maintaining appropriate levels of humidity and air circulation is crucial to prevent moisture issues that can affect various elements of a building. Hence, if mitigation is not properly executed, the risk of damage to sawn lumber floor joists becomes significant.

While other options may hint at potential structural concerns, the specific relationship between radon mitigation and the condition of lumber joists addresses the core issue of moisture management as it relates to improper procedures in radon-removal systems.