How long is the hose supplying Engine 2 in the water relay example?

In the context of water relays, the length of the hose supplying Engine 2 is determined based on the typical configurations and practices utilized in fire department operations. When considering the logistics of a water relay, the 800 feet of 5" Large Diameter Hose (LDH) is commonly used as it strikes a balance between sufficient water supply and manageable hose lengths for deployment.

LDH is advantageous in these scenarios due to its ability to transport larger volumes of water with less friction loss compared to smaller diameter hoses. By choosing 800 feet, the fire department can efficiently supply the engine while minimizing the risk of hose kinks or other operational issues that might arise with longer or shorter lengths. This choice likely reflects standard practice and training scenarios covered in the manual, ensuring that personnel are well-prepared for real-world applications during firefighting operations.

Additionally, factors such as the distance between water sources and fire engines, the terrain, and the capability of the engine to handle the length of hose contribute to the decision-making process, where 800 feet is often seen as an optimal solution for many relay situations.