Not sure if this would help, I had a similar Apartment (NFPA-13R) situation
where the Architect specified an Automatic Standpipe system because there was a
water supply issue. I come to find out that the project was at the very end of
the local water purveyors district. The property next door was a different
water purveyor with plenty of water. The A.H.J. & Consultant allowed me to use
the flow from that hydrant (25' from property) and design as manual standpipe
system (Saved the cost of Fire Pump and Water Tank). I had to indicate proper
signage on FDC. Maybe your property is same situation?
George Medina Jr.
Sr. Fire Sprinkler DesignerSINGLETON FIRE PROTECTION INC.Office: (818)
252-5744Cell: (323) 906-5701
Business Hours: 9:00am-5:00pm
On Wednesday, April 3, 2024 at 06:43:54 AM PDT,
[email protected] <[email protected]> wrote:
Asking this on behalf of Rowe Sprinkler Systems (Temporally Un-Retired)
We have a 4-story modular apartment building sprinklered in accordance with
NFPA 13R with allowed exceptions, with 4 standpipes. The standpipes are
connected at the 1st floor level. One each at the ends of the L shaped building
and two at the approximate mid-point on either side of a 2-hour separation wall
with self-closing, rated doors in the corridor.
The question is for purposes of calculating the standpipe can these be treated
as two separate buildings? For example, 250 gpm at the far end of the 4th
floor, 250 gpm at the far end of the 3rd floor and 250 gpm at the at the
connecting point of the middle standpipe, for a total of 750 gpm.
Or do we have to calculate the additional standpipes up to 1250 gpm. Available
water is the issue.
Richard L. Mote CET
Rimrock Design Services, LLC
Middleburg, PA 17842
Mobile 570-541-2685
EMAIL [email protected]
WEB: www.rimrockdesignservicesllc.com
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