What width must Horizontal sidewall sprinklers be installed at above and below a soffit?

Horizontal sidewall sprinklers must be installed at a distance of 8 inches above and below a soffit. This installation height ensures that the sprinkler can effectively control or suppress a fire in the area, allowing for optimum water distribution throughout the space. It also adheres to the design and installation standards outlined in fire protection codes, which are in place to ensure safety and compliance with regulations.

The specified 8 inches places the sprinkler within a range that allows for proper functioning while considering the presence of a soffit, which could obstruct the water spray if the sprinkler were installed too close to the structure or too far away. Proper installation is critical for maintaining adequate coverage and achieving effective fire suppression, hence the significance of this specific measurement.