What is the theoretical lift in feet for fire service operations?

The theoretical lift in fire service operations typically refers to the maximum height from which a pump can draw water under ideal conditions without considering losses due to friction, elevation, or other factors. This value is based on the concept of atmospheric pressure, which can support a column of water.

In ideal conditions, the theoretical lift is roughly 33.87 feet. This figure arises from the understanding that the atmospheric pressure at sea level can support a column of water to this height. Therefore, when a fire pump is operated, it is generally recognized that it can effectively draw water from this maximum height, assuming there are no obstructions or inefficiencies such as friction losses in hoses or changes in elevation that can limit performance.

Understanding this theoretical lift is important for pump operators as it helps them properly plan and execute water supply strategies, ensuring they remain within the operational limits of their equipment while maximizing efficiency.