Area of Coverage is the approximate area the sprinkler discharge can protect.

• A. Density
• B. Area of Coverage
• C. Hydraulic design area
• D. Perimeter

Answer: (B)

The main idea is the zone around a sprinkler that the discharge can reach. This is called the Area of Coverage, because it describes the approximate footprint protected by a single sprinkler head under design conditions. Density is about how much water flows per unit area, not the area itself, and perimeter is just the boundary length of a zone, not the protected area. Hydraulic design area is the zone used for hydraulic calculations and can align with the area of coverage, but the term that directly defines the protected area is Area of Coverage. In real systems, the footprint can vary due to spray patterns, ceiling height, and obstructions, so the area is described as approximate.