As you increase the hazard classification, density must _____________.

When the hazard classification is increased, the fire risk associated with the area or occupancy becomes greater. This requires an adjustment in the design and performance of fire protection systems, particularly in sprinkler systems. Specifically, with a higher hazard classification, it is essential to increase the water density—meaning the amount of water discharged per unit area over a specified period.

Increasing the density helps ensure adequate coverage and suppression capability against more intense or complex fire scenarios, which are expected in higher hazard classifications. This adjustment is crucial for maintaining the effectiveness of the sprinkler system and fulfilling the requirements set forth by national standards and regulations, such as those from the National Fire Protection Association (NFPA).

In summary, as the hazard classification rises, the corresponding response from the sprinkler system must include an increase in density to ensure the protection provided is sufficient for the heightened risks.