Which of the following types of ladders is NOT included in the ground ladder inventory?

A ground ladder inventory typically encompasses ladders that are designed for various firefighting and rescue scenarios, which generally include extension ladders, roof ladders, and attic ladders.

The 35 ft. extension ladder is essential for reaching high places, making it a critical component of ground ladder inventories often utilized during firefighting operations. The 16 ft. roof ladder designed specifically for roof access is pivotal for firefighters when working on rooftops, allowing them to stabilize themselves and their equipment. The 10 ft. attic ladder is useful for accessing smaller, confined spaces like attics, where maneuverability is a key consideration.

The 20 ft. straight ladder, while potentially used in some firefighting contexts, is often categorized differently than extension or specialized ladders within ground ladder inventories. It may not be considered essential or included in some departments' specific ground ladder lists, illustrating a significant aspect of equipment selection based on departmental needs and strategies for various scenarios. This nuanced understanding helps clarify why the straight ladder might not be listed among the ground ladder inventory compared to the others that serve more defined and essential roles.