What is the maximum coverage area for Light Hazard sprinkler heads according to NFPA 13?

The maximum coverage area for Light Hazard sprinkler heads as specified by NFPA 13 is 225 square feet. This standard is used for areas classified as Light Hazard, which typically involve spaces with minimal fire load and combustible materials—such as offices, classrooms, and similar environments.

The reasoning behind this coverage limit is based on the hydraulic calculations that ensure sprinkler systems are effective in controlling and extinguishing potential fires. By allowing a maximum of 225 square feet per head, the design takes into consideration the ability to deliver sufficient water flow and pressure to adequately cover the area and provide the necessary protection without overwhelming the system or compromising its effectiveness.

In comparison, the other potential answers reflect either smaller or larger coverage areas, which do not align with the NFPA 13 guidelines for Light Hazard classifications. Specifically, the smaller options may not provide enough coverage for typical Light Hazard applications, while the larger option exceeds the maximum coverage criteria, which could compromise water distribution and system performance.