What is the permitted fire flow reduction for a 55 ft separation distance between buildings on a single lot?

In fire protection, the fire flow requirement can be reduced based on the separation distance between buildings. For a separation distance of 55 feet, the National Fire Protection Association (NFPA) guidelines suggest that there's a specific reduction percentage applicable to the required fire flow.

In cases where buildings are located closer together, the risk of fire spread increases; hence, larger separations usually allow for a reduction in the required fire flow. For a 55-foot separation, the reduction is typically set at 40 percent, which indicates that the buildings are sufficiently spaced to lower the risk but still require a significant amount of fire suppression capability.

Understanding these guidelines helps ensure that fire protection measures are proportionate to the potential risk based on the layout and proximity of buildings, promoting safety while allowing for efficient use of resources.