What does the term Sprinklered Throughout indicate about a building?

What does the term Sprinklered Throughout indicate about a building?

• A. Building Partially Protected by Sprinklers.
• B. Building Fully Equipped with a Fire Sprinkler System.
• C. Sprinklers Installed Only in Mechanical Rooms.
• D. Sprinklers Installed for Decorative Effect.

Answer: (B)

Sprinklered throughout means the entire building is protected by an automatic fire sprinkler system, with sprinklers installed in all required spaces and zones. In NFPA 13R for low-rise residences, this design provides automatic suppression coverage in living areas, bedrooms, hallways, and other spaces, not just in a few locations.

This full coverage is what reduces fire growth and improves life safety by ensuring water is released wherever a fire starts. It’s not limited to mechanical rooms or a decorative feature, and it’s not partial protection.