Which NFPA standard specifically covers the design and installation of automatic sprinkler systems?

• A. NFPA 72.
• B. NFPA 90A.
• C. NFPA 110.
• D. NFPA 13.

Answer: (D)

Designing and installing automatic sprinkler systems is guided by NFPA 13. This standard lays out the requirements for the design, layout, and installation of water-based sprinkler systems, including how pipes are sized, how hydraulic calculations are performed, what water supplies are needed, and how sprinklers and system components are arranged for effective protection. The other standards address different fire protection topics: NFPA 72 covers fire alarm and signaling systems, NFPA 90A deals with the installation of HVAC and ventilation systems, and NFPA 110 covers emergency and standby power systems. Because the question focuses on the design and installation of automatic sprinkler systems, NFPA 13 is the appropriate standard.