When you have a common office building that is classified as a Light Hazard but you have some rooms that may be Ordinary Hazard such as storage rooms and others.
When you have your layout and one or more of these rooms ends up in your design area, how do you proceed in the calculation?
1.- Do you calculate 0.10 gpm/sqft over 1,500 sqft?
2.- Do you calculate according to Chapter 23 Sections 18.104.22.168.4 and 22.214.171.124.5 specifically for that room even if it is one or two sprinklers?
3.- Do you calculate everything with the density and area for the hazard of that room even though everything else is Light Hazard?
4.- Do you calculate 0.10 gpm/sqft over 1,500 sqft and ensure that the sprinklers inside the room discharge at the minimum density for the hazard they have?
This may be very general and definitely every project is different but every time I run into this I have this same question. I was told to just calculate everything as a Light Hazard but my curiosity always keeps me thinking about it.
Moderator Note: This question is different, but similar to: www.meyerfire.com/daily/ordinary-hazard-within-light-hazard-building
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