Brian,
Was the 324 GPM @ 46 PSI at the base of the riser?
You will want to push for 4" Class 52 Ductile Iron. At a 100' the pressure
drop will be 29 PSI.
Regards,
G. Tim Stone
AutoSPRINK 2020, 16.3.28.0
Xi Powergo XT
Intel Core i7-8700k CPU@ 3.70GHz
Windows 10 Pro; 64 Bit
G. Tim Stone Consulting, LLC
NICET Level III Engineering Technician
Fire Protection Sprinkler Design
and Consulting Services
117 Old Stage Rd. - Essex Jct., VT. 05452
CELL: (802) 373-0638
[email protected] <mailto:[email protected]>
From: Brian Harris <[email protected]>
Sent: Friday, January 6, 2023 10:39 AM
To: Discussion list on issues relating to automatic fire sprinklers
<[email protected]>
Subject: [Sprinklerforum] Re: 2" Underground
Tim-
Yikes!! I'm working on getting that info now. Thank you.
Brian Harris, CET
BVS Systems Inc.
bvssytemsinc.com <http://bvssystemsinc.com/>
From: [email protected] <mailto:[email protected]>
<[email protected] <mailto:[email protected]> >
Sent: Friday, January 06, 2023 10:29 AM
To: 'Discussion list on issues relating to automatic fire sprinklers'
<[email protected]
<mailto:[email protected]> >
Subject: [Sprinklerforum] Re: 2" Underground
Brian,
We need a little mor information about the Underground.
I ran a Calculation based on 100' of 2" Type M Copper flowing 324 GPM.
This created 88 PSI pressure loss.
Regards,
G. Tim Stone
AutoSPRINK 2020, 16.3.28.0
Xi Powergo XT
Intel Core i7-8700k CPU@ 3.70GHz
Windows 10 Pro; 64 Bit
G. Tim Stone Consulting, LLC
NICET Level III Engineering Technician
Fire Protection Sprinkler Design
and Consulting Services
117 Old Stage Rd. - Essex Jct., VT. 05452
CELL: (802) 373-0638
[email protected] <mailto:[email protected]>
From: Brian Harris <[email protected]
<mailto:[email protected]> >
Sent: Friday, January 6, 2023 8:46 AM
To: [email protected]
<mailto:[email protected]>
Subject: [Sprinklerforum] 2" Underground
Been asked to verify a 2" underground supply will work for a NFPA-13 Dry
system for a small Patio/Bar. Water supply is good, S=114 / R=106 / F=1556.
Preliminary numbers I've ran show a system demand of 324gpm @ 46psi. That's
assuming a 10psi loss for underground pipe (BFP is 10 as well), the loss for
2" underground is the part I'm not real comfortable about. Any thoughts?
Brian Harris, CET
BVS Systems Inc.
Design Manager
bvssystemsinc.com <http://bvssystemsinc.com/>
Phone: 704.896.9989
Fax: 704.896.1935
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