Fire sprinkler system - most unfavorable location

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Determining the most unfavorable location for a fire sprinkler system in a parking garage requires careful consideration of design guidelines from EN 12845 and NFPA standards. While initial assumptions about the location may be informed, they should not replace thorough calculations across multiple areas to ensure accuracy. The discussion highlights the importance of not overlooking potential problem areas, such as placing sprinklers over drains. Resources for hydraulic sprinkler system design are available online to aid in this process. Accurate identification of the most unfavorable location is crucial for effective fire safety measures.
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I'm about to do some calculations for a sprinkler system in a parking garage (OH2). This system follows EN 12845 (design of automatic sprinkler systems), but I'm sure the procedure for what I'm about to ask is quite similar in NFPA as well.

I need to determine the system's most unfavorable location, and I'm not quite sure how to do this. Just by nature of the design I have a pretty good idea of where it will probably be, but is that a good enough reason? There is a chance it might be somewhere else, so unless I do several calculations of different areas I won't know for certain. Is it ok to assume where it is and calculate that area?
 
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Putting it a few inches over a drain would probably be the worst place. :oldtongue:

Seriously though, I found quite a few good links by googling Hydraulic Sprinkler System Design.
 

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