What is the minimum clearance between storage and the deflector of large drop sprinkler heads?

The minimum clearance between storage and the deflector of large drop sprinkler heads is set at 3 feet to ensure effective operation and coverage of the sprinkler system. This distance is critical because it prevents the stored materials from obstructing the sprinkler's ability to distribute water adequately in the event of a fire. When the clearance is maintained at this minimum distance, it allows the droplets released by the deflector to travel unobstructed, ensuring that they can reach the intended area needing protection. This requirement is especially important in environments where materials may have varying heights and configurations. By adhering to the 3-foot clearance, the effectiveness and reliability of the fire protection system are maximized.