Depending on the door opening size and distance of sprinklers to the top of the opening, and if the door opening is not protected by a fire door or door that would close upon detection of smoke or fire that could prevent combustion gases from one side migrating to the other side, then, Yes, you should be calculating both systems flowing at the same time.
A fire near the opening could generate heat that would set off the adjacent deluge system resulting in both flowing. I would also be looking at the hazard, if it is a free flowing liquid for instance that could flow across the opening, you could also initiate flow from both systems. Craig Prahl | Jacobs | Group Lead - Fire Protection | 864.676.5252 | [email protected]<mailto:[email protected]> | www.jacobs.com<http://www.jacobs.com/> 1041 East Butler Road Greenville, South Carolina 29606 From: Sprinklerforum <[email protected]> On Behalf Of Easter, Tim (Contractor) Sent: Wednesday, May 01, 2019 8:09 AM To: [email protected] Subject: [EXTERNAL] deluge system I have two deluge systems fed from separate risers that have a large door opening between the two systems. Am I required to calculate both systems flowing. [cid:[email protected]] NFPA 13 section 19.2.2 states that areas not separated by a partition shall extend 15 feet beyond the more demanding design area. So that means I have to flow both deluge systems at the same time, correct? Best, Timothy M. Easter ________________________________ NOTICE - This communication may contain confidential and privileged information that is for the sole use of the intended recipient. Any viewing, copying or distribution of, or reliance on this message by unintended recipients is strictly prohibited. If you have received this message in error, please notify us immediately by replying to the message and deleting it from your computer. Jacobs' Energy, Chemicals and Resources business is now part of Worley
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