Tim, If the whole building is one system, then naturally, every nozzle will be flowing.
If the building is broken up into multiple systems it can get a bit trickier. If there are large openings where combustion gases can freely flow from one level to another, those communicating floors should be designed to flow simultaneously. You made a brief comment about "both buildings". There are building/fire code directives on the minimal allowable distance between certain types/occupancy categories of buildings. When those minimums cannot be met, other measures to protect the buildings from fire exposure are required and are outlined within the codes. I have run into conditions with hazardous buildings where the sprinkler systems in both buildings were calculated as simultaneous flows due to the level of fire hazard and likelihood of multiple building involvement due to a lack of code compliant separation. Craig Prahl | Jacobs | Group Lead/SME - 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) via Sprinklerforum Sent: Friday, October 18, 2019 8:12 AM To: [email protected] Cc: Easter, Tim (Contractor) <[email protected]> Subject: [EXTERNAL] deluge sprinkler Which NFPA code and section describe a situation in the building with a deluge system, that drive the requirement to flow all floors, both buildings simultaneously? The floors have large openings between floors for equipment. There are no walls separating different sections of a single floor. Best, Timothy M. Easter, P.E. Fire Protection Engineer BAE Systems, Inc. T: +1 423 578 1713 | E: [email protected]<mailto:[email protected]> ________________________________ 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.
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