What is the primary reason to keep fire apparatus away from trenches?

The primary reason to keep fire apparatus away from trenches is to prevent the risk of a secondary collapse. Trenches can be unstable, especially if they are deep or if the soil is loose. If heavy equipment or vehicles are parked too close to the edge of a trench, the weight can cause the trench walls to give way, leading to a dangerous situation for both the fire personnel and any victims that may be trapped inside.

By maintaining a safe distance, emergency responders help ensure their safety and the integrity of rescue operations. Recognizing this risk is crucial in fire response scenarios involving trenches, as protecting the safety of personnel and effective rescue attempts is of utmost importance. This principle also emphasizes the need for proper assessment and planning when working around such hazards in emergency situations.