What is the specified maximum coverage area for Extra Hazard sprinkler heads?

The maximum coverage area for Extra Hazard sprinkler heads is specifically defined to be between 90 and 130 square feet. This classification of sprinkler head is designed for areas where the potential for fire is greater due to the presence of more combustible materials or higher fuel load. As such, the coverage area is intentionally limited to ensure that the sprinkler system can effectively manage a fire event within that range.

The smaller coverage area allows for a more concentrated distribution of water, which enhances the fire protection capabilities required in Extra Hazard environments. This is critical since the objective is to quickly suppress fires before they escalate, making the specified range of 90 to 130 square feet appropriate for maintaining adequate protection levels in these high-risk situations. Understanding this coverage specification is crucial for sprinkler system design and compliance with fire safety regulations.