I always do a 1 for 1. If you add another sprinkler to an arm over, I
was always under the assumption that you would have to calculate to
prove it.
Travis Mack, SET
MFP Design, LLC
2508 E Lodgepole Drive
Gilbert, AZ 85298
480-505-9271
fax: 866-430-6107
email:[email protected]
http://www.mfpdesign.com
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On 12/18/2015 12:58 PM, Brian Harris wrote:
I was always taught when doing an upfit you only replace 1 for 1, meaning if here was 1
existing head on an arm-over you couldn't say add another "new" head and now be
feeding 2 heads off that same arm-over, otherwise you'd have to add a new arm-over to the
branchline for the new head. Now that may have come from a spec long long ago but I swore
it was also in NFPA, however I don't see it worded that way in the standard. Any help?
Brian Harris, CET
BVS Systems Inc.
Sprinkler Division
bvssystemsinc.com<http://bvssystemsinc.com/>
Phone: 704.896.9989
Fax: 704.896.1935
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