Which type of ladder is usually carried up another ladder before being placed?

The roof ladder is specifically designed for use in firefighting operations on pitched roofs, and it features a unique hook at the top that allows it to be secured over the peak of a roof. This design is particularly advantageous because it provides a stable platform for firefighters to operate from while they work on rooftops.

When accessing a roof, a roof ladder is often carried up another ladder, usually an extension ladder, to reach the desired height safely. Once at the top, firefighters can then deploy the roof ladder to ensure it remains secure against the roof. This method provides both stability and safety as firefighters carry out their tasks.

In contrast, other ladders mentioned do not typically require this method of transport. A chimney ladder is designed for accessing chimneys specifically and doesn’t usually need to be transported in a similar manner. A folding ladder can be easily carried and set up without the need to navigate another ladder. The Fresno ladder, often used for different purposes such as reaching into confined spaces or specific fire situations, likewise doesn’t require being carried up another ladder for placement.