E,1,Wdb65AWzMgSBzW3HDw91SfcRQCtxDUQKoJf-UowQ-WnB_WMosgG-8W7eLePJ42PwWQvLiQx16Pls052VqwHO7tKm-_u5AnWly0ewkNiMkxn-AjQb1JI,=1>
https://archerconstruction.com
From: Tom Duross mailto:tduro...@comcast.net> >
Sent: Friday, January 20, 2023 8:07 AM
To: 'Discussion list on issues relating to automatic fir
Hi Campers,
Is there anyone out there in forum land working under the 2021 IBC that can
tell me what edition of NFPA #25 is referenced? Can’t seem to find it online.
Thanks,
TD
_
SprinklerForum mailing list:
Hey folks, long time..
Are any members using any of the new digital measurement devices out there?
I've looked at Moasure & Meazor GPS based.
Looking for walls and structure surveying in addition to pipes.
Happy New Year Campers.
TD
with the weights shown.
From: Tom Duross
Sent: Thursday, September 15, 2022 7:23 AM
To: 'Discussion list on issues relating to automatic fire sprinklers'
Subject: [Sprinklerforum] Re: Fire pump package weight ?
If your sizing the mass/weight of the concrete base and grout (1 ½
minimum), for a low
If your sizing the mass/weight of the concrete base and grout (1 ½
minimum), for a low speed it should be equal or greater the pump/base and
motor weight. I think 2600# is everything.
From: Anthony Carrizosa
Sent: Thursday, September 15, 2022 10:14 AM
To: Discussion list on issues relating
Remember the old testing trailers? Playpipes affixed to a rack and
discharging into a series of expanded metal sheets that took the velocity out
and it just gushed out the open bottom. I had one back in the early 80’s and
we’d park it over a catch basin and catch almost everything. Assuming
Doing some commissioning work on a new one for New Balance here in Boston.
Building shaped like a peanut, curved walls and roof. Almost every space is
OH2, large sprinkler loads, half the place is K=8 heads. 10 stairways, some
only between 2 floors. Large movable wooden track, protection
Usually 30-34 balls in a 2 1/2" swivel. NO grease.
-Original Message-
From: Sprinklerforum On Behalf
Of Bob Caputo via Sprinklerforum
Sent: Friday, October 15, 2021 11:18 AM
To: sprinklerforum@lists.firesprinkler.org; e...@bamfordfire.com
Cc: Bob Caputo ; BRUCE VERHEI
Subject: RE:
Controller" that Limits PSI be installed ?
>
>
> On Tue, Jul 27, 2021 at 4:28 AM Tom Duross via Sprinklerforum <
> sprinklerforum@lists.firesprinkler.org> wrote:
>
> > Good morning Campers. Looking for advice and comments.
> >
> > I have an existing di
at 110psi...
Matt
-Original Message-
From: Sprinklerforum On
Behalf Of Tom Duross via Sprinklerforum
Sent: Tuesday, July 27, 2021 6:28 AM
To: sprinklerforum@lists.firesprinkler.org
Cc: Tom Duross
Subject: FP Suction Control Valve
Good morning Campers. Looking for advice and comments
. I honestly dont know why the engineer (small E) had a
storz included as this house it atop a hill in the woods ½ mile away from a
city hydrant and these buildings.
OK, done rambling. Loose the PRV or keep scratching my head?
Lets go Red Sox!
Tom Duross
There must be epoxy systems approved by DOT as I just did 5) #502 standpipes
just north of Boston and they not only widened the bridges and ramps about
5' but also used the same system for supporting the barriers and fencing,
but also the guides, restraints, expansion joints, anchors and hangers
I bet if there was a partially closed gate, or a check, or a blockage; that
might cause it.
Are they’re any good resources about testing a fire pump with a flow meter
where it feeds back into the suction piping? I have been given a couple of
tests with very screwy results. Thanks
Thanks Skylar, all too experienced in venting from previous bad experiences
back in the day.
The underground we did yesterday we fortunately had 2 hydrants and the 8"
flanged stub in the pump room to vent. The stub was where we flushed from (to
get the entire main) and also pressure
a standpipe?
My friend Brad Casterline wanted to offer an answer to Tom Duross'
question about how
long it would take to pump up a standpipe.
Please note, I'm not this smart!
P1=75 psi/.433=173 ft.
P2=200 psi/.433=462 ft.
deltaP=289 ft.
V1=5000 gal/7.48=669 ft^3.
P1V1=115,737 ft/ft^3, /289 ft=400
Thanks Matt.
I also got a tip to buy/rent a large pressure washer today. I'm thinking
this little 3/4 hp Reed is not going to do it at all.
I did 800' of 8" ductile today, flush, pressure test, forward flow test. It
was 32° and snowing just north of Boston at this University. Took me 1 hr.
10
Im wondering if anyone here on the list can help me with some estimates.
I have 3 elevated roadway standpipes to pressure test and flow test. All
set with the flow testing part.
My question is pressure testing. Never did this part before. I can use the
public hydrants to fill to street
), but it's unnecessary. Downside is they have to call the chief and
have him send a FF to take out the box and reset the panel once a month.
Tom Duross
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Sprinklerforum@lists.firesprinkler.org
http
Cut grooved ductile I presume? I've seen that many times.
-Original Message-
From: Sprinklerforum On
Behalf Of Kyle.Montgomery via Sprinklerforum
Sent: Tuesday, April 06, 2021 5:18 PM
To: sprinklerforum@lists.firesprinkler.org
Cc: Kyle.Montgomery ; Matt Grise
; Steve Leyton
Subject:
Kind of along the lines of the pre-assembled dry valves with tapped butterfly
valve and no means of FDC supply between butterfly and dry valve. We got some
push back in Boston about this because they check (no pun) the routing of the
FDC line and interconnection point in standpipe systems when
150 should be the base for non high-rise FDC's unless placarded for higher
required pressures. Then maybe 50 over?
I give many FDC's a pass, just me, when they leak, and a lot do. If they're
fitted with plastic or aluminum covers, and changed to plugs, some hold but
many don't. I get a hold
I think it all depends on placement and location, to remove as much as
possible.
I've been meaning to write a similar post about anti-freeze systems and air
vents. These are almost always dead-end systems and I'm finding dilution at
the source even after a single year. Granted 13 requires a
April 12th from his FB page.
To know him was to love him.
TD
Thanks Ron.
He is missed.
I think we should bring back "Pick on George Month".
April I think his birthday was.
Hopefully some remember..,
"George has a warehouse, that is storing nothing, how should he protect it?"
R/
Matt
Seems
I do a fair amount of this for both commissioning and 5-year. I only post
pressures on the placard if over 175.
-Original Message-
From: Sprinklerforum On Behalf
Of John Denhardt via Sprinklerforum
Sent: Wednesday, November 25, 2020 1:09 PM
To: sprinklerforum@lists.firesprinkler.org
Welcome to my world.
I found this to be more of a Building Code requirement than a standard
requirement but often Engineers/Designers have no real world idea of just how
big the stuff is and even how much room one needs to safely service and
maintain this equipment. Even the contractor's shop
Kudo’s Skylar.
From: Sprinklerforum On Behalf
Of Skyler Bilbo via Sprinklerforum
Sent: Friday, May 29, 2020 6:57 PM
To: sprinklerforum@lists.firesprinkler.org
Cc: Skyler Bilbo
Subject: Re: Covered Parking in 13R
I don't think this has been said yet on this thread, but I think it is
Look here they drilled the joists.
From: Sprinklerforum On Behalf
Of Travis Mack via Sprinklerforum
Sent: Friday, March 27, 2020 4:55 PM
To: sprinklerforum@lists.firesprinkler.org
Cc: Travis Mack ; cl...@fire-design.com
Subject: Re: NFPA 13D
I’d be more concerned that the straps are not
, Bedroom and Closet by means of a few new walls.
Would you treat this a vanilla 2 head design D system with pump and tank (10
minutes vs. 20)?
Thanks,
Tom Duross
___
Sprinklerforum mailing list
Sprinklerforum@lists.firesprinkler.org
http://lists.firesprink
Any chance a member might have an old (80's) Peerless Pump catalogue?
I need a cut sheet on a 6AF14 with a 365TS driver for dimensions.
Thanks in advance,
Thomas Duross
The Fire Pump Testing Company
11 Varney Street
Jamaica Plain, MA 02130
T 617-971-0700
F 617-524-7171
C 617-592-4236
Agreed Rod.
Yes, the 5000’s seem to have made the relatively easy Elkhart even easier.
Glad they got away from the 1 1/16” deep socket. I do fair amount of 5-year
PRV’s and find about 50% needing adjustment so I can relate to FD frustration.
Also a fair % that fail due to lack of annual
I’ve done d systems using Bluebeam and elite’s fire program.
From: Sprinklerforum On Behalf
Of Colin Taylor via Sprinklerforum
Sent: Friday, November 08, 2019 11:16 AM
To: sprinklerforum@lists.firesprinkler.org
Cc: Colin Taylor ; Parsley Consulting
Subject: RE: 13D CAD and Calc Program
have no idea which edition of the building code was enforce at that time.
I was curious as to design requirements for Standpipes.
Tim
From: Sprinklerforum mailto:sprinklerforum-boun...@lists.firesprinkler.org> > On Behalf Of Tom
Duross
Sent: Monday, January 21, 2019 11:13 AM
To: sprinkle
as to design requirements for Standpipes.
Tim
From: Sprinklerforum mailto:sprinklerforum-boun...@lists.firesprinkler.org> > On Behalf Of Tom
Duross
Sent: Monday, January 21, 2019 11:13 AM
To: sprinklerforum@lists.firesprinkler.org
<mailto:sprinklerforum@lists.firesprinkler.org>
Subj
Depending on the grade of the gauge he could be assuming only middle 1/3
span accuracy and wanting the pointer there. They have to be minimum 1% I
think but again depending on the grade the gauge could be 1/3 or full span,
then you could use a 400#.
From: Sprinklerforum On
Behalf Of Mike
71, 73, 74. 76, 78 & 80. Youre looking for the adopted edition for a
certain building code, right?
From: Sprinklerforum On
Behalf Of tston...@comcast.net
Sent: Monday, January 21, 2019 10:46 AM
To: sprinklerforum@lists.firesprinkler.org
Subject: Old copy of NFPA 14
Does anyone
[mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Tom Duross
Sent: Friday, January 4, 2019 6:27 AM
To: sprinklerforum@lists.firesprinkler.org
<mailto:sprinklerforum@lists.firesprinkler.org>
Subject: FDC Placard
Trying this one more time, original never posted..
Did a 5 year Sta
like “To match Building Fire Pump delivery of blah-blah-blah, a
pumper delivery pressure of blah-blah is required at the FDC”. (it won’t have
the ‘blah’s in it)
I don’t want to incur any liability in scaling back residual pressures in a
program versus actual.
Tom Duross
Works quite well. After cleaning out the race and ball bearings of a hose
swivel we tap one side of the set screw with a center punch. You gotta really
work to get it out again.
From: Sprinklerforum On Behalf
Of Ben Young
Sent: Friday, January 04, 2019 9:08 AM
To:
Like with any sprinkler drain if you can't see the water, you install a
sight glass or in your case a waste cone.
From: Sprinklerforum On
Behalf Of Kyle.Montgomery
Sent: Monday, November 05, 2018 1:16 PM
To: sprinklerforum@lists.firesprinkler.org
Subject: RE: Main Relief Valve for Diesel
This is based upon % of openings and setbacks to property lines and not means
of way?
From: Sprinklerforum On Behalf
Of Fpdcdesign
Sent: Tuesday, September 25, 2018 2:52 PM
To: Sprinklerforum
Subject: Re: Exposure protection of large windows.
Steve,
The owner and architect had an
Probably a buildup of pressure from heat rejection off the roof. Check system
gauges. A good pilot operated relief valve would open to relieve and close.
From: Sprinklerforum On Behalf
Of Jeff Normand
Sent: Thursday, September 13, 2018 5:32 PM
To: sprinklerforum@lists.firesprinkler.org
I like the Dickson hockey puck, have it NIST calibrated yearly, multiple
programmable samplings, saves to a memory chip and exports right to excel.
From: Sprinklerforum On
Behalf Of Steve Leyton
Sent: Friday, September 07, 2018 4:00 PM
To: sprinklerforum@lists.firesprinkler.org
Subject:
175 is not out of reason at all, whether manual or automatic. You do need to
make sure you don’t exceed pressure ratings of the components. Also, for
traditional 150# systems that we hydro to 200# for, you would need to increase
your test pressure to 50# over. I see that all the time. On
Of Tom Duross
Sent: Monday, July 23, 2018 5:42 PM
To: sprinklerforum@lists.firesprinkler.org
Subject: RE: PRV
You'd have to duplicate static and residual inlet pressures to adjust it to the
specific location it's installed in, plus deal with the impairment of no FDV.
It only usually takes about 5
You'd have to duplicate static and residual inlet pressures to adjust it to the
specific location it's installed in, plus deal with the impairment of no FDV.
It only usually takes about 5 minutes flowing to get the desired residual and
desired flow and check static across the valve.
How about a
> There will be an expert (i.e., not me) checking it out on site
>> tomorrow and I will see about sharing the diagnosis here soon.
>>
>>
>>
>> Brad
>>
>>
>>
>> From: Sprinklerforum
>> [mailto:sprinklerforum-boun...@lists.firesprinkler.org]
Have a vibration analysis performed. That will indicate balance, soft foot,
alignment, bearing, even natural frequency as the source. To bad we're so
far away from each other.
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org]
On Behalf Of Matt Grise
Sent: Tuesday,
These are the times I miss George. He never thought he was the smartest guy in
the room, he just was. And never condescending, always available off site,
just an honest pot smokin deadhead who's seen more than most.
-Original Message-
From: Sprinklerforum
You start bending the listings when playing with different impellers in the
field. In the old days these were listed assemblies and if you swap out an
impeller, there does the listing. Some still hold that to be true. You might
try a model series that meets both designs but with different
You’ll have #14 issues, if relevant and depending on adopted version.
I will say that in-series setup with bypasses in 2013 #14 is a real PITA to set
due to valve creep.
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Fire Design
Sent: Friday, July
n't have that so have to make it up
> in other ways.
>
> Brad
>
> Quoting Tom Duross :
>
>> From the playpipe diffuser to the little plastic tester, he's made
>> quite an impact on that portion of our industry. Good going.
>> TD
>>
>>
>>
>>
>From the playpipe diffuser to the little plastic tester, he's made quite an
impact on that portion of our industry. Good going.
TD
The following is really all i remember about what Phil B said about the when
where and how of the idea:
1) when--waiting to board a jet on a business trip to
acobs.com/> www.jacobs.com
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Tom Duross
Sent: Tuesday, April 24, 2018 2:11 PM
To: sprinklerforum@lists.firesprinkler.org
<mailto:sprinklerforum@lists.firesprinkler.org>
Subject: [EXTERNAL] RE: Strainer
Actually I think if the pump has no cleanout provisions, a strainer is required
on vertical inline pumps.
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of P & P Sprinklers Ltd
Sent: Tuesday, April 24, 2018 2:08 PM
To:
Its never been a 'new' method for me for 30+ years. Sending full discharge
pressure through a normally empty pipe and several thin gate valves is
foolish imho. I very often get same pitot pressures with hose monsters on
same length hoses or right on the header. When you have them spread out or
Also see Chapter 16 of 25.
-Original Message-
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Ron Greenman
Sent: Monday, February 26, 2018 12:56 PM
To: sprinklerforum@lists.firesprinkler.org
Subject: Re: Residential sprinkler question
Below is
Do anyone of you out there in the great interweb have a cad file of a ClaVal
90-21 PRV?
I'm working on stairway FCV details for a project using both 4"and 6"
grooved end globe valve style.
I've sent a request into ClaVal but not heard back. Thanks in advance.
Thomas Duross
The Fire Pump Testing
and also allowed, the FDC check….
duh
What Larry said..
And there can’t be any valves between the FDC and the FDV’s on the standpipe
unless you have more than one standpipe and have isolation valves at the base
of each standpipe so you can’t take them off the riser manifold, for
What Larry said..
And there can’t be any valves between the FDC and the FDV’s on the standpipe
unless you have more than one standpipe and have isolation valves at the base
of each standpipe so you can’t take them off the riser manifold, for example.
TD
The requirement is from NFPA 13,
I’ve got a 10+2 Sty building that needs a new pump for a myriad of reasons.
Replacement will be larger to satisfy Standpipe demand. New system pressures
will require PRV’s to the 10th flr. and maybe one or both levels of mechanical
above. None currently installed, 190 PSI in the pump room.
The only time I saw this was to keep system pressure down, limit churn to 3
500's instead of a 1500.
TD
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org]
On Behalf Of Cahill, Christopher
Sent: Tuesday, December 19, 2017 6:05 PM
To:
Bluebeam is great but the tablet versions need some development IMHO. I
dropped my Surface Pro for an Ipad Pro with pen last year. The Ipad takes very
nice pictures too.
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Fpdcdesign
Sent: Wednesday,
And 2 FDC’s within 150’ of hydrants for a high-rise?
Not to digress but I’m finding piping from FDC’s to feed mains not according to
code more and more. You’re not supposed to have any valves between the FDC and
the Standpipes with only Standpipe Isolation Valves being allowed.
From:
A second hose valve within the roof landing also works for testing. I've
encouraged clients to drill in a second FDV 6" above to offset hooking up on
roof level and the floor below and pulling up all that water-filled hose.
It was the norm in these parts in the 70's and 80's on all standpipe
I would think the height would state size so 4" and 6". I do believe NYFD
has their own FDV flow requirements, 230 gpm at 80 psi (if I remember
right).
TD
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org]
On Behalf Of Mike Stossel
Sent: Tuesday, October 24, 2017
-boun...@lists.firesprinkler.org] On
Behalf Of Tom Duross
Sent: 2017/07/07 11:12 AM
To: sprinklerforum@lists.firesprinkler.org
<mailto:sprinklerforum@lists.firesprinkler.org>
Subject: RE: NFPA 20 2013 confusing wording
Agreed. There should be 3 definitions.
From: Sprinkle
Agreed. There should be 3 definitions.
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of rongreenman .
Sent: Friday, July 07, 2017 11:07 AM
To: sprinklerforum@lists.firesprinkler.org
Subject: Re: NFPA 20 2013 confusing wording
When you guys are
End treatment seems to the norm round these parts. Up to 350 in the room and
the standpipes set for 175 static on the roof and up as you go down.
Either a master regulator for each FCV/FDV on each floor or separates in the
stairways.
Would love to start a thread on that Figure
A peeve of mine. Pads are a building code item taken out of chapter 9 and #20
because many manufacturers are different.
Rule of thumb. Pad is required, grouting dependent upon manufacturers base
design. Pad (and grout) should assume 3x the mass (weight) of driving
equipment and extend a
Always do affinity adjustments. In fact I just disapproved an annual report
for not adjusting because after I did myself, pump fell below 5% triggering
a 'look see'.
TD
Forumites:
I know some of you test pumps frequently (Tom D., Todd).
Do you interpret NFPA 25 to require affinity law
I would write the committee for an exception for tanks only but you might not
make it. I think part of the reason for 3 year traditional measuring is also
to verify the meter is accurate.
NFPA 20, 2013 edition requires an alternate means of measuring flow when a
metering device is
Looks like you could be above 200 PSI churn or system pressure. The
standard (2013 referenced) does not allow you to use the relief as a means
of blowing off excess pressure above 175.
Tom
Is the 140 psi total pressure or pump rating?
The pressure relief valve comes into play if the
What do you mean by out of control? Monthly or weekly runs?
I’m still old school but I do wear full PPE (most of the time) during annual
testing, even after 3 arc flashes. I know..
I do a flush, 4 points with everything, 3 manual, 3 auto, exercise both
disconnects, full run handle, even
er.org] On
Behalf Of Tom Duross
Sent: Wednesday, March 1, 2017 7:54 AM
To: sprinklerforum@lists.firesprinkler.org
<mailto:sprinklerforum@lists.firesprinkler.org>
Subject: RE: Air Relief Time
NYC has a requirement for construction standpipes in all high-rises to be
pressurized a
NYC has a requirement for construction standpipes in all high-rises to be
pressurized and monitored with a placard indicating required FDC pressures for
required flows at each floor. Boston adopted this last year. Roadway
standpipes are required to be timed for water delivery but are empty
ax: (802) 434-4343
tston...@comcast.net <mailto:tston...@comcast.net>
11:00 CST
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Tom Duross
Sent: Thursday, February 23, 2017 11:17 AM
To: sprinklerforum@lists.firesprinkler.org
3-0638 TEL: (802) 434-2968 Fax: (802) 434-4343
tston...@comcast.net <mailto:tston...@comcast.net>
11:00 CST
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Tom Duross
Sent: Thursday, February 23, 2
K of 25 for a 250 flow at 100 and 50 for a 500 flow at 100 have always worked
for me in doing a simple standpipe calc to verify 150 at the FDC.
That would be on the inlet side of the valve. 2½” angle and globe pattern
hose valves have losses of 3-5 psi at 250 gpm, so the discharge side
Does anyone have access to older Potter flow switch info?
I have a 3” VSR-D, 80’s vintage to replace with a new VSR-F.
Nothing on their website. Wondering if the hole sizes are the same.
Thanks,
Thomas Duross
The Fire Pump Testing Company
11 Varney Street
Jamaica Plain, MA 02130
T
I’ve had good luck over the years using hydraulic swivels. I get them from a
local heavy equipment dealer.
TD
I always remove the gauge and treat it as if it were delicate instrument. Oh
wait, it is. Lubing the quick connect after it';s dry is also a good idea.
These are measuring
What Ron said (I think he meant fittings) and I’ve seen many instances of
grooved unlined DI piping within pump rooms (talk about heavy!) but if used on
the potable side, I believe like Dave said, cement lined CL52.
TD
In many companies DI has replaced CI for small screwed piping.
Seeing a fair amount of hybrids around here. Between stored water as a second
source and it also being a pumper supply to ultra-green buildings with unheated
stairways.
Would love to round table 5-year #14 testing with PRV’s if that’s of interest
to the forum. Even older systems without
Even if they're separate systems Travis? Probably have separate FDC's.
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org]
On Behalf Of Travis Mack, SET
Sent: Monday, December 26, 2016 12:46 PM
To: sprinklerforum@lists.firesprinkler.org
Subject: Re: How many
lators
We have several buildings that have them here in Denver. Not gaining
popularity due to installation cost.
Jeremy Blocker
Sent from my iPhone 6
On Dec 8, 2016, at 4:56 PM, Tom Duross <tduro...@comcast.net
<mailto:tduro...@comcast.net> > wrote:
Are there any service folks
Are there any service folks out there testing buildings with circulators on the
floor controls?
Thomas Duross
The Fire Pump Testing Company
11 Varney Street
Jamaica Plain, MA 02130
T 617-971-0700
F 617-524-7171
C 617-592-4236
t...@thefirepumptestingcompany.com
I’ve seen this before as well. Tank is primary and street supply lowered via
PRV (n.c.) to match tank supply pressure along with auto-fill from street to
tank.
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Travis Mack
Sent: Saturday, November
Thats why I always put a calibrated gauge on the hydrant and a tapped
swivel and calibrated gauge on the FDC.
We usually get spare pumps or out of service pieces for our tests, never
trust the pump gauges.
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org]
On Behalf
150 PSI Churn, 1250 GPM @ 149 PSI is what I use for non high-rise standpipe
hydraulics flowing 1-5 FDV's.
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org]
On Behalf Of Brian Harris
Sent: Monday, September 12, 2016 3:21 PM
To: sprinklerforum@lists.firesprinkler.org
What John said.
If you don’t have a complete set of submittals showing every appurtenance and
appliance from heads to hangers, seismic calculation, hydraulics, etc.; I would
set them aside too.
Tom Duross
I don't know of a backflow with a fixed loss.. NFPA may have a number but if so
I've
ue respect, in our jurisdiction sewage authority says no.
John Drucker
Assistant Construction Official
Fire Protection Subcode Official
Electrical Subcode Official
jdruc...@redbanknj.org <mailto:jdruc...@redbanknj.org>
Cell/Text 732-904-6823
Tom Duross <tduro...@comcast.net &
Construction Official
Fire Protection Subcode Official
Electrical Subcode Official
jdruc...@redbanknj.org <mailto:jdruc...@redbanknj.org>
Cell/Text 732-904-6823
Tom Duross <tduro...@comcast.net <mailto:tduro...@comcast.net> > wrote:
Plumbing codes do prevail though. With the pos
Plumbing codes do prevail though. With the possibility of metals, oils,
anaerobics in suspension, this discharge must go to sanitary. We put 2x2.5
NPTxNH adapters on all our testing accounts outlets that exit the building and
hose to sewer, even 3” drain risers. Homemade ‘hosemonster’ style
are big pumps.
SL
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Tom Duross
Sent: Tuesday, August 02, 2016 4:21 PM
To: sprinklerforum@lists.firesprinkler.org
<mailto:sprinklerforum@lists.firesprinkler.org>
Subject: RE: HIGH RISE BUILDING
Must have been one hell of a pump.
There is no height limit in latest editions of NFPA 14. Standpipes that
directly supply hose connections are limited to 350 PSI (stay tuned for 2019
cycle on that one) but there is no height or pressure limit on express mains
that serve upper zones.
This happened once to me and it was the backflow opening and closing checks,
does the pressure change on the gauge?
We took out the checks and it worked beautifully, then got both 3# checks and
it worked. Silver bullet.
If not, then I would agree on trapped air expanding and contracting.
of water, panel goes into
supervisory. Automatic actuation is from area and duct smokes, cells are
pressurized, and from pull stations plus manual release in cabinet and remote
release shunt in guard’s room.
Tom Duross
FGOL
Why a DIPA? Are you planning on protecting frozen prisoners? Use
Suction control valves are actually installed on the discharge of the pump
between check and test tee, sensing line runs to suction.
TD
Unless an applicable code supercedes NFPA 20 they're allowable in new
installations. From NFPA 20 2016:
4.16.10.1 Suction pressure regulating valves that
I wish they had three categories; restricting ($), reducing ($$) and
regulating ($$$). I find most of the reducing valves are no better than
restricting valves and the only real solution to be the regulating style
whether they be pilot or spring operated serving sprinkler and hose (cause
if you
When you open an FDV, water comes out, it's automatic. Manual standpipes,
like in unheated parking garages with no water supply, just an FDC, are
manual.
Pump isn't undersized, assuming it serves HMD sprinkler requirements with
hose stream allowances, just doesn't supply standpipe demand, FDC
If your using 175 class fittings and hydrostatic testing to 200 then you
can't pump in more than 150. You have to base your standpipe hydraulics at
150 psi max from the pumper at the FDC.
You said combination so your standpipe is automatic, fire pump serves
sprinklers only, fine, FDC serves to
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