According to NFPA 13, what information should be included in the working plans submitted for AHJ approval?

The inclusion of occupancy classification and the number of sprinklers in the working plans for AHJ (Authority Having Jurisdiction) approval is essential because this information directly impacts the design and effectiveness of the fire protection system being proposed. Different occupancy classifications have varying requirements according to NFPA 13, which governs the standards for the installation of sprinkler systems. Understanding the occupancy helps in determining the appropriate density and types of sprinklers needed.

Moreover, the number of sprinklers is crucial in calculating the coverage area and ensuring that there is adequate protection for the specific hazards present in the space. This allows for an effective fire suppression response if a fire occurs, making it vital for safety and compliance with fire codes.

On the other hand, while the other options may contain relevant information for other aspects of building safety or design, they do not encompass the critical elements necessary to evaluate the sprinkler system's design and compliance as mandated by the NFPA 13 standards. Thus, focusing on occupancy classification and the number of sprinklers is crucial for ensuring an effective fire protection strategy that meets regulatory requirements.