What is the primary concern regarding safety when constructing or using amateur radio towers?

Physical injury from falls is the primary concern regarding safety when constructing or using amateur radio towers. This encompasses the risks associated with working at heights, such as falls during installation or maintenance activities. When erecting or climbing towers, individuals are often working with substantial heights where a lack of proper safety measures, such as harnesses or ladders, can lead to serious injuries or fatalities.

While concerns like wind resistance, weight of equipment, and electrical hazards are also important aspects to consider, they do not pose the immediate and direct risk that accidental falls do. For instance, wind resistance impacts the structural integrity of the tower but does not directly lead to accidents involving individuals working on or around the tower. Similarly, electrical hazards are vital to address, but they are more related to operational safety rather than the physical dangers posed during the construction process. Hence, when considering safety, the risk of falls during tower work takes precedence.