NCIDQ IDFX Practice Exam

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What is the recommended spacing for sprinkler heads in a typical system?

10 feet
15 feet
20 feet
25 feet

The correct answer is: 15 feet

The recommended spacing for sprinkler heads in a typical system, often set at 15 feet, is based on ensuring adequate coverage for fire protection while also considering the efficiency of the system. Sprinkler systems must be designed to effectively combat potential fire hazards, and spacing them too far apart could leave gaps in coverage where a fire could potentially spread uncontested. In general practice, 15 feet between sprinkler heads allows for an effective range of water distribution while minimizing the risk of overlapping coverage, which can lead to water wastage and potential structural damage. This balance is crucial in designing a system that meets fire safety codes and provides reliable protection. Other spacings, such as 10 feet, 20 feet, or 25 feet, either decrease coverage efficiency, which can be a safety risk, or may introduce unnecessary complexity to the system design and installation, making 15 feet the most appropriate and widely accepted standard.