Final answer:
The ladder strap should generally be attached 18-24 inches above the bottom of an HR hose pack to aid in carrying and ensure proper weight distribution.
Step-by-step explanation:
When securing an HR (High Rise) hose pack with a ladder strap, it is commonly recommended to attach the strap approximately 18-24 inches above the bottom of the pack. This positioning allows for the pack to be carried more easily by the firefighter while climbing, and ensures the weight distribution does not interfere with mobility. The strap not only helps to carry the pack but also secures the hose within the pack, preventing it from becoming loose and unmanageable during movement to the incident scene.