The common length of the straight ground ladder is usually between:

The common length of a straight ground ladder typically falls within 12 to 24 feet. This size range is ideal for residential structures, allowing firefighters to access second-story windows and roofs effectively. Ground ladders in this range are lightweight enough for firefighters to handle quickly while still being long enough to provide adequate reach.

Ladders that are shorter than 12 feet may not be sufficient for many emergency situations, especially in buildings with more than one story. Conversely, ladders longer than 24 feet, while useful for taller buildings, often require more training and strength to maneuver effectively, which might be less practical for immediate use in most residential fire situations. Thus, the length of 12 to 24 feet strikes a balance between accessibility and maneuverability.