Actually the referenced higher design parameters by is not predicted 
upon being a light hazard or an attic (though that are the conditions when it 
applies).  It is for a concealed combustible space.  If the area is accessible 
and used for storage etc, it no longer is a concealed space.

Roland Huggins, PE - VP Engineering
American Fire Sprinkler Assn.       ---      Fire Sprinklers Saves Lives
Dallas, TX <>

> On Oct 13, 2016, at 10:32 AM, Brad Casterline <> wrote:
> So, in an ordinary hazard attic, does regular OH design? After all, the 
> increased start pressure only applies to light hazard CC spaces. 

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