What determines the spacing of sprinkler heads in a system?

The spacing of sprinkler heads in a fire protection system is primarily determined by factors such as the type of sprinkler system employed, the ceiling height of the area to be protected, and the hazard classification of the building.

Different types of sprinkler systems, like wet, dry, or pre-action, have varying requirements for spacing based on their design and operational characteristics. For instance, in areas with higher ceilings, the spacing may need to be increased to ensure adequate coverage. Similarly, buildings are classified by their hazard level (light, ordinary, or high hazard), which affects how many sprinkler heads are required and their arrangement to ensure effective fire suppression. Proper spacing is crucial for maximizing the effectiveness of the sprinkler system and ensuring that it functions as intended in the event of a fire.

The other options do not provide relevant criteria for spacing sprinkler heads. While the number of workers and the age of the building can influence other fire safety measures, they are not direct factors in determining sprinkler head spacing. Local fire department recommendations can guide overall system design and compliance, but they typically align with broader regulatory guidelines rather than dictating specific spacing requirements.