I've always been under the impression that these are treated separately from
the overhead sprinkler system, i.e. either the fire is in the hood and
controlled by the hood system, or it is outside of the hood and controlled by
the sprinkler system. I've never considered them as working in
Travis,
In a roundabout way, that sort of answers your question. If they aren’t allowed
to connect to domestic fixtures that may be operating at the same time, then it
stands to reason that they shouldn’t connect to sprinkler systems that are
operating at the same time. Ergo, if they are
I'm looking at the code again, and you may be right. But I always thought that
an obstruction that close to the sprinkler (could you quantify "just below the
ESFR deflectors") would have to meet the rules for "Obstruction at or Near
Ceiling", 8.12.5.1.
Are we saying that 8.12.5.1 only applies
Also, how are you complying with the temperature rating when you are that close
to a unit heater? Are they making any high temperature ESFRs yet?
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Kyle.Montgomery via Sprinklerforum
Sent: Tuesday, August 20
you to 8.12.5.2 or 8.12.5.3. I'll admit, I don't work with
ESFR's every day, but having read those sections multiple times, that's all I
come up with.
Ed K
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Kyle.Montgomery via Sprinklerforum
Sent: Tuesday, Augus
In the original post, I believe the area was classified as ordinary hazard, not
necessarily storage. So does that change things?
I agree with the previous posts that it seems odd to say we can call the area
under the door light hazard when using a standard spray head but can’t do so
when using
Jerry,
I've seen situation where they added thicker insulation at the ridgeline to
account for a few inches of height. If it's a relatively small area that's over
30 feet, that might be a cost-effective solution.
I believe that you can use the design criteria (head pressure) for the roof
I think this is one of those things, just like with Hi-Ex foam generators,
where you really want to get some input from the manufacturer.
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Prahl, Craig/GVL
Sent: Thursday, August 8, 2019 8:51 AM
To:
6YjM8RkTQ=ekEFYfncgvGgJI0GFb8RJoNrLiPX2HYXw3nUp6UOUmA=>
1041 East Butler Road Greenville, South Carolina 29606
From: Sprinklerforum
mailto:sprinklerforum-boun...@lists.firesprinkler.org>>
On Behalf Of Kyle.Montgomery via Sprinklerforum
Sent: Thursday, August 8, 2019 12:24 PM
To:
sprinklerforum@lists
If the load calculations told you that you needed 3 longitudinal braces per
branch line, I'm thinking Bob is right. There's no way you're going to be able
to replace them with 1 lateral brace on the main at each branch line, unless
you've got some structural member adjacent to the main that is
All,
I'm running into some issues on a project where the AHJ is asking for "Cane
Detection". For those of you who may not be familiar with the term, the short
answer is that cane detection is required for objects that protrude into the
circulation path so that a blind/visually impaired person
he 4" to act as the detection. I don't think bollards would be
required or at least they haven't been around here in North Carolina yet.
On Fri, Nov 22, 2019 at 12:40 PM Kyle.Montgomery via Sprinklerforum
mailto:sprinklerforum@lists.firesprinkler.org>>
wrote:
All,
I’m running int
;
(803)896-9800
"Our firefighting starts with plan review..."
From: Sprinklerforum
mailto:sprinklerforum-boun...@lists.firesprinkler.org>>
On Behalf Of Kyle.Montgomery via Sprinklerforum
Sent: Friday, November 22, 2019 3:32 PM
To:
sprinklerforum@lists.firesprinkler.org
ection. I don't think bollards would be
required or at least they haven't been around here in North Carolina yet.
On Fri, Nov 22, 2019 at 12:40 PM Kyle.Montgomery via Sprinklerforum
mailto:sprinklerforum@lists.firesprinkler.org>>
wrote:
All,
I’m running into some issues on a proje
Of Kyle.Montgomery via Sprinklerforum
Sent: Friday, November 22, 2019 1:40 PM
To: Nick Maneen mailto:nman...@sentryfp.com>>
Cc: Kyle.Montgomery
mailto:kmontgom...@aerofire.com>>;
sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org>
Subject: RE: [
en't been around here in North Carolina yet.
On Fri, Nov 22, 2019 at 12:40 PM Kyle.Montgomery via Sprinklerforum
mailto:sprinklerforum@lists.firesprinkler.org>>
wrote:
All,
I’m running into some issues on a project where the AHJ is asking for “Cane
Detection”. For those of you who may not
2s2ahYnWf9LOrAMzY=AddRn1mo5PiyetLmfM5SSN2pZZaqT1aDKaK5G-2XYbs=>
(803)896-9800
"Our firefighting starts with plan review..."
From: Sprinklerforum
mailto:sprinklerforum-boun...@lists.firesprinkler.org>>
On Behalf Of Kyle.Montgomery via Sprinklerforum
Sent: Friday, November 22
.@jacobs.com> |
www.jacobs.com<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.jacobs.com_=DwMGaQ=wn3mZQLIuInh2ClcJ0_DIA=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A=i-9e61heIZz94tEwJ5KyalBxOjClmU4dKUZn8QOWQnY=VZkEuwQJf3cCcQhKmLVf3f0trjHf0UWe7BsJcjQUJKs=>
1041 East Butler Road Greenville, South Carolina 29606
Fr
lt;mailto:craig.pr...@jacobs.com> |
www.jacobs.com<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.jacobs.com_=DwMGaQ=wn3mZQLIuInh2ClcJ0_DIA=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A=i-9e61heIZz94tEwJ5KyalBxOjClmU4dKUZn8QOWQnY=VZkEuwQJf3cCcQhKmLVf3f0trjHf0UWe7BsJcjQUJKs=>
1041 Ea
..@lists.firesprinkler.org>>
On Behalf Of Kyle.Montgomery via Sprinklerforum
Sent: Monday, December 2, 2019 8:28 AM
To:
sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org>
Cc: Kyle.Montgomery
mailto:kmontgom...@aerofire.com>>; Frans Sto
Changing pipe type to schedule 40 to improve hydraulics?
Over-discharging is a result of imbalance in the system, not pipe sizes that
are too big. The only way you improve the hydraulics by “choking down” a system
is if you strategically do it so that you don’t need more pressure to make the
That’s a good plan.
From: Nick Maneen [mailto:nman...@sentryfp.com]
Sent: Friday, December 6, 2019 9:03 AM
To: Kyle.Montgomery ;
sprinklerforum@lists.firesprinkler.org
Cc: 'Brian Harris' ; 'Travis Mack'
Subject: RE: [EXTERNAL] RE: Hydraulic Calc Phenomena?
Yes Kyle, it was weird but it
Of Kyle.Montgomery via Sprinklerforum
Sent: Friday, October 18, 2019 9:21 AM
To:
sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org>
Cc: Kyle.Montgomery; Mike Hairfield; Steve Leyton
Subject: RE: Interstitial Spaces
Steve,
Can you expound upon your question
Steve,
Can you expound upon your question about if it is used as a return air plenum?
How does that impact if sprinklers are required in a concealed space or not?
-Kyle M
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Steve Leyton via Sprinklerforum
Phil,
In the case of the 5.6k sprinkler you reference below, how is it determined
that Cd = 0.75?
-Kyle M
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Kerschner, Philip via Sprinklerforum
Sent: Wednesday, November 20, 2019 8:32 AM
To:
So it’s determined by testing the specific orifice, I kind of figured that. Do
you (or anybody on the forum) know of a good way to estimate what the
approximate Cd would be for an orifice?
We’re sometimes asked to estimate what the discharge would be through an open
orifice of unknown
So, you are worried about the grooved joint failing due to the ends of the pipe
distorting? I think you worry too much, but if you are going to worry about
something, I think the nuts on the coupling coming loose would be a more likely
failure mode.
I've seen a LOT of diesel fire pump rooms
The first point I would like to make is that institutional heads are clearly
not intended or designed to be installed in sheet rock ceilings. If you are an
architect or engineer involved in the up front design/specifications, you
really should be specifying a different ceiling type for rooms
I agree that if the spaces are less than 300 sq. ft. and there are no unfilled
penetrations, that you can treat it as panel construction. Even if it’s the
walls of the room that help create the less than 300 sq. ft. area. Although Mr.
Layton’s example of the TJIs makes me at least question that
Or, if they use spray-on fireproofing, that usually fills up the gaps.
But the OP's theory should be sound for calling it obstructed construction.
More to Travis's point, every time this comes up I wonder about that
requirement for Panel Construction. Beam and Girder Construction doesn't
You can't use that head on a pre-action system, can you?
-Kyle M
-Original Message-
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Anthony C via Sprinklerforum
Sent: Thursday, February 27, 2020 7:34 AM
To: sprinklerforum@lists.firesprinkler.org
Don't mean to hi-jack, but does anyone here think that breaking a 42,000 sq.
ft. building up into two separate systems actually improves the level of
protection? If your AHJ is reasonable, they might let you save that extra riser
and feed main and just use one system. Or, if there is a small
tibCgctyfRXVZGuicLBdjOVrigQ2i3WLuKGg=CLCVR8_SFo0LibV2pOZMu0Zbv_OaKcqDvUuxtkt0XeM=>
On 01/29/2020 9:30 AM, Kyle.Montgomery via Sprinklerforum wrote:
Don't mean to hi-jack, but does anyone here think that breaking a 42,000 sq.
ft. building up into two separate systems actually improves the level of
tes is the maximum, would mean you just took
responsibility for the entire thing.
Mike Hill
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Kyle.Montgomery via Sprinklerforum
Sent: Wednesday, January 29, 2020 1:50 PM
To: Parsley Consulting
mailto:parsleyc
Esteemed members of the fire sprinkler community,
NFPA 13 (2016 Edition) section 8.15.20 is basically telling us to provide
bushed 1" outlets for sprinklers in shell spaces, right?
Section 23.4.4.8.1(9) tells us that friction loss can be excluded for the
fitting directly connected to a
different than I expect. I always thought more like parts
of a strip mall building that might end up OH-2.
Best.
On Feb 5, 2020, at 07:58, Kyle.Montgomery via Sprinklerforum
mailto:sprinklerforum@lists.firesprinkler.org>>
wrote:
That’s the crux of my question. A literal interpretation cou
, at 2:22 PM, Kyle.Montgomery via Sprinklerforum
mailto:sprinklerforum@lists.firesprinkler.org>>
wrote:
Esteemed members of the fire sprinkler community,
NFPA 13 (2016 Edition) section 8.15.20 is basically telling us to provide
bushed 1” outlets for sprinklers in shell spaces, right?
S
: Shell Spaces and Bushed Outlets
That doesn't sound legit - I would keep the tee in the calculations. A bushing
isn't really recognized as a fitting per table 23.4.3.1.1 - more like a
transient fitting.
On Tue, Feb 4, 2020 at 1:22 PM Kyle.Montgomery via Sprinklerforum
mailto:sprinklerforum
Are you familiar with the term ‘C.O.J.’?
Heheheh…
Just in case you aren’t, it’s not dirty or anything. It means “cut on job”.
-Kyle M
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Bruce Verhei via Sprinklerforum
Sent: Monday, January 13, 2020 7:42
I don’t believe the high-water sensor is required, but I am far from a tank
expert.
I am curious; if 12” is too small of a range (less than 0.5 psi) for the fill
valve to operate in, what range can it reliably operate in? It’s just using
pressure for the on/off, right?
They have some fill
Viking makes an upright residential head, I think that could work for you.
-Kyle M
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of J H via Sprinklerforum
Sent: Monday, January 20, 2020 1:36 PM
To: sprinklerforum@lists.firesprinkler.org
Cc: J H
Subject:
I think the Tolco/Cooper B-Line Fig. 75 is similar, if you want another option.
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of James Litvak via Sprinklerforum
Sent: Thursday, January 2, 2020 7:55 AM
To: vi...@wtfp.net
Cc: James Litvak ;
rforum
mailto:sprinklerforum-boun...@lists.firesprinkler.org>>
On Behalf Of Kyle.Montgomery via Sprinklerforum
Sent: Monday, March 9, 2020 12:02 PM
To:
sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org>;
b...@firebyknight.com<mailto:b...@firebyknight.com
I agree that it looks like the head is going to be too close to a diffuser.
As far as the CPVC pipe “supporting” the flex duct… is it really? I think there
is a difference between “supporting” and “touching”. If I lean against the
wall, I am not now supporting the house. It looks like the duct
We've done some of those in the Phoenix area. Everyone agreed to OH2, but there
was certainly some debate about whether they should be something higher. We
went back and forth all the way from OH1 (vehicle parking) to EH2 (mobile home
manufacturing).
We settled on OH2 because we figured a
How in the world would that work? I mean, the air is in the pipe when it’s
installed, it doesn’t enter at a later date.
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On
Behalf Of Ben Young via Sprinklerforum
Sent: Friday, March 6, 2020 2:04 PM
To:
I agree with Skyler, this should be an acceptable way to protect the area. I
also agree that the wording is poorly written for what the intent is. Also, the
picture in the book (it’s even in the appendix of the regular version) is
showing a condition where the larger area has no ceiling and the
“... if you don’t want liability, then don’t do construction.”
Well said, my friend.
-Kyle M
> On Oct 8, 2020, at 4:20 PM, Ben Young via Sprinklerforum
> wrote:
>
> As a former contractor who now works for an engineering firm, I think it
> sounds like everyone is being a little bit hard
I'm looking at a project that is your typical self-storage building but with a
feature I haven't dealt with before. There are some lockers that are 4' x 4' x
4' cubes stacked on top of each other. Just two high, so there is 128 cubic
feet of storage space in a 16 square foot area. It's not
It may not be a skylight, but I don't see why you couldn't consider it a
"similar pocket" to a skylight.
>From a practical standpoint, what would be the justification behind requiring
>a sprinkler in the pocket in this scenario?
-Kyle M
-Original Message-
From: Sprinklerforum On
Is there currently a listing criteria for "fire protection air compressors"? I
see UL 1450 Standard for Motor-Operated Air Compressors, Vacuum Pumps, and
Painting Equipment, but does that include any specifics for fire protection use?
-Kyle M
-Original Message-
From: Sprinklerforum On
rds around air pressure.
That doesn’t mean they are evaluating whether you’ll be happy at its ability to
drive your impact wrench or charge up your dry system. That’s between the
manufacturer and you.
Mr. H. Hopper was first to point this out to me.
Best.
Bruce Verhei
> On 09/25/2020 11:06 AM Ky
I think Travis is right, except for ceiling-only protection for ceiling heights
over 40 feet. Then you go to 8-9, 2.3.6.9.6, which tells you to use 3-3-3-1 for
slopes up to 5 degrees and 4-4-2 for ceiling slopes over 5 degrees.
I think this is new for the update in July 2020.
-Kyle M
Some of you guys mentioned bushings or "other method to prevent chafing". Can
we elaborate on that? I've seen bushings used where CPVC is run in a wall and
passes through metal studs, but I don't think I've seem them installed in this
scenario. Is that really a requirement?
-Kyle M
So, I understand the "Small [1 ½ in. ] Hose Connections" that are discussed in
8.17.5.1. You typically find these in rack storage warehouses.
But I'm confused by 8.17.5.2 Hose Connections for Fire Department Use. What
hose connections would these be? Or, perhaps I should ask when these hose
ct: RE: 8.17.5 Hose Connections
Would small hoses at a stage qualify?
Mike Hill
-Original Message-
From: Sprinklerforum On Behalf
Of Kyle.Montgomery via Sprinklerforum
Sent: Friday, October 2, 2020 3:16 PM
To: 'sprinklerforum@lists.firesprinkler.org'
Cc: Kyle.Montgomery
Subjec
This has been addressed in the 2016 Edition:
9.2.3.4.4.4 and 9.2.3.5.2.2 both state “unless flexible sprinkler hose fittings
are used”.
So it doesn’t say it in 2013 Edition, but it’s clear what the intent was an the
direction the code is going.
-Kyle M
From: Sprinklerforum On Behalf
Of
Matt,
For what it’s worth (probably less than $0.02), I agree with you that it should
provide an equivalent level of protection to be, say 5’-6” off of the wall as
it would be if you were 11’-0” between sprinkler heads due to some obstruction.
I suppose someone could make a strong argument
used 20 psi as minimum pump in;et pressure, unless taking supply
from a tank. Everywhere you go in AWWA you run into 20 psi as minimum pressure
in the water system.
Best.
Bruce Verhei
> On 08/06/2020 2:54 PM Kyle.Montgomery via Sprinklerforum
> wrote:
>
>
> These two opti
need to perform a pump test or get water supply information.
-Kyle M
-Original Message-
From: Sprinklerforum On Behalf
Of Kyle.Montgomery via Sprinklerforum
Sent: Thursday, August 6, 2020 11:57 AM
To: sprinklerforum@lists.firesprinkler.org
Cc: Kyle.Montgomery ; Matt Grise
Subject
These two options or the last pump test all should satisfactorily answer the
question. The "suction pressure" has nothing to do with the pump itself, just
the pressure that is available from the city source (or tank or whatever). As
mentioned, they generally need to know that so they can
Let me clarify, the gauge will tell you the static pump suction pressure. You
have to use the pump test or a flow test and some math do figure the NPSH.
-Original Message-
From: Sprinklerforum On Behalf
Of Kyle.Montgomery via Sprinklerforum
Sent: Thursday, August 6, 2020 11:55 AM
I think you're on the right track. For the most part you just treat them like
an obstruction. We've been allowed to omit sprinklers from underneath conveyors
when they are very low to the ground, since there really isn't anything to
protect underneath.
What are you concerned about?
Kyle
Out of curiosity, where are people building single family homes that 4+
stories? I don't think I've ever seen one.
-Kyle M
-Original Message-
From: Sprinklerforum On Behalf
Of Matthew J Willis via Sprinklerforum
Sent: Thursday, August 13, 2020 7:27 AM
To:
So, what would make them non-compliant? Obstructions, like ductwork and stuff?
When we’ve gotten similar pushback, it’s been because we’ve had 155-degree
heads and the inspector has claimed that they aren’t appropriate for an
unconditioned space (we’re working in Phoenix, so it can get
That sounds correct.
It seems strange that your calculation is over-discharging by more than 100%
though. Minimum discharge is 90 GPM and you’re discharging over 200 GPM? Do you
have like 13 sprinklers jammed into this area?
-Kyle M
From: Sprinklerforum On Behalf
Of Bob Knight via
Todd: I wonder how the compressed foam mattresses behave when the box burns
away?
FM Global Engineer: … (comes to startling realization) … Mother of God…
This had me chuckling. You’ve piqued my curiosity. Maybe we should start a ‘Go
Fund Me’ for full scale fire testing of compressed foam
If that’s the case, why not let him decide if he wants them or not, regardless
of whether they would be required in a new build? A requirement has little to
do with whether or not they provide additional value or safety/protection.
-Kyle M
From: Sprinklerforum On Behalf
Of Ken Haney via
Since the area inside of the beams is covered by the sprinklers below the
mezzanine, could you just call the extension from the beams an obstruction to
the overhead system of 12" width or less? Would you need protection under this
size of an obstruction?
-Kyle M
From: Sprinklerforum On
Matt,
I think I agree with all of Bob's points. Likelihood of freeze damage in a
drained system should be lower, but in the event of damage the manufacturer
would probably use that as an excuse to not be held liable. So there is some
probably some risk there.
What are they hoping to
Our standard for diesel fire pumps is to provide a double-wall fuel tank with
leak detection, steel supply and return fuel lines, and of course the
connection at the diesel engine is generally a flexible connection provided
with the diesel engine from the manufacturer.
Anybody doing anything
There are specific rules and tables and figures for sprinklers and soffits. I
think you should apply those. My understanding is that the normal obstruction
rules assume that you could spray onto either side of the obstruction, but that
isn't the case with a soffit.
-Kyle M
-Original
I'm confused about how to treat Class IA flammable liquids. We've got a
cosmetics manufacturer that is moving into a shell building. They are planning
a Hazardous Storage room to store the flammable liquids when not in use. The
liquids being stored are primarily Class IB solvents, but I'm being
Certainly EH 2 seems like it will get the job done. But for those of you saying
that, which commodity drives you to that? For example, if they were three
separate buildings:
RV Storage Building
Boat Storage Building (just parked, not on racks)
Storage lockers with height less than 12 feet
Are you saying to just extend the system from the adjacent home into that area
to protect it? As opposed to providing another lead-in? Is that an option?
-Kyle M
-Original Message-
From: Sprinklerforum On Behalf
Of Steve Leyton via Sprinklerforum
Sent: Wednesday, January 27, 2021 8:45
What determines the maximum size (length and width in plan view, not height)
and/or minimum aisle width between storage piles when you've got palletized and
solid-piled storage without racks? Or is there no aisle requirement? Everything
I'm finding in NFPA 13 with regard to aisles is in
Of Kyle.Montgomery via Sprinklerforum
Sent: Wednesday, June 9, 2021 2:45 PM
To: 'sprinklerforum@lists.firesprinkler.org'
Cc: Kyle.Montgomery
Subject: Solid-Piled and Palletized Storage Arrangement
What determines the maximum size (length and width in plan view, not height)
and/or minimum aisle
ting the fire. You are permitted to use
the pumps productive curve at 150% of rated flow and 65% of rated pressure
On Fri, May 7, 2021 at 11:13 AM Kyle.Montgomery via Sprinklerforum <
sprinklerforum@lists.firesprinkler.org> wrote:
> I'm working on a project where they are adding a
I'm working on a project where they are adding a new building to an existing
campus. There is an existing fire water storage tank and fire pump that serves
the site underground fire loop. The new building has a very demanding sprinkler
system that just barely exceeds the fire pump's pressure
Well, if you send me the price for 5 gallons, I'll crunch the numbers using my
secret formula and figure out what one gallon would cost. Sorry, I can't share
the formula, too valuable.
-Kyle M
-Original Message-
From: Sprinklerforum On Behalf
Of Glen Buelow, Inc. via Sprinklerforum
It is if there is no requirement for a standpipe.
-Kyle M
-Original Message-
From: Sprinklerforum On Behalf
Of Jose Anibal Castillo via Sprinklerforum
Sent: Thursday, February 4, 2021 8:43 AM
To: sprinklerforum@lists.firesprinkler.org
Cc: Jose Anibal Castillo
Subject: [EXTERNAL] NFPA
I'm looking at a small hangar (Group II Hangar) that the client is interested
in protecting with SFFF (synthetic fluorine-free foam) as opposed to the
standard AFFF closed-head system. Are there any standards that address the
design criteria for these foams, or does each individual manufacturer
I will counter your "is there a legally defendable argument" with "is there a
feasible fire scenario on a tennis court that would not be adequately
controlled by marginally obstructed ESFR sprinklers?"
I mean, you only need a legally defendable argument if something bad happens,
right?
I say
If it's not a concrete tee, then I don't think you're going to be able to
exceed 22" from the deck.
-Kyle M
-Original Message-
From: Sprinklerforum On Behalf
Of Dennis Wilson via Sprinklerforum
Sent: Monday, February 1, 2021 3:08 PM
To: sprinklerforum@lists.firesprinkler.org
Cc:
We use grooved all the time as well (like hundreds of times) and I'm not aware
of any issue as a result of it. I'm pretty confident that there isn't a rule
against it. I've never seen it suck one of the gaskets through the pump, if
that's what you're concerned about.
-Kyle M
-Original
When installing a CPVC system in a seismic area (area where seismic bracing is
required) are there any special considerations needed for the drops to
sprinkler heads? In the past, with steel pipe systems we've often utilized
flexible sprinkler connections to avoid any concern about differential
Kind of a tangent, but Mike is 100% correct here. FM's authority over the
project only goes as far as the owner will allow.
That being said, my experience with FM reviewers is that they are pretty
accommodating and usually try to make the best decision for their customer (the
owner) and
Not to beat a moot horse, but one thing to be careful of with flowmeters is to
make sure that you have the appropriate amount of straight pipe upstream and
downstream of device. There will be a manufacturer's recommendation for these
lengths and from my experience it does seem to make a
Hilti HDI appears to be UL-Listed for fire protection.
-Original Message-
From: Sprinklerforum On Behalf
Of Sean Lockyer via Sprinklerforum
Sent: Tuesday, April 20, 2021 2:48 PM
To: sprinklerforum@lists.firesprinkler.org
Cc: Sean Lockyer
Subject: [EXTERNAL] UL list concrete anchor
Is
Brian,
I agree with Skyler here. The picture may not look like what you're doing, but
the book would be hard to carry if there were a figure representing every
scenario. The intent seems to apply though: You've got a space that is
sprinklered only because it is open to an adjacent sprinklered
I think the OP is the AHJ.
I just want to say that I think it's cool that a plan reviewer/inspector would
come here to get the industries opinion about something like that. We are all
on the same team.
Looks like Dane beat me to it, but I do think there is a fire separation
required. Also,
Does "at least 1 inch of space between each panel" mean several feet of space
between each panel, or does it mean just a couple of inches.
To me, it sounds more like you would have to treat them as grouped obstructions
and protect underneath.
-Kyle M
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It was my understanding that the committee's approach to requiring air vents
was "one is better than none", without wanting to add a ton of extra complexity
or expense to the systems. I would assume that the migration away from remote
inspector's test valves to the on-riser test-n-drain style
I think it's reasonable if there is no fuel load beneath the conveyors.
Probably depends on the configuration and height of the conveyors and if there
are any safeguards put in place to ensure there won't be anything place under
the conveyors in the future.
And by safeguards, I don't
It's probably worth double-checking the jurisdictional requirements. I've dealt
with some jurisdictions that state that if a backup generator is provided, it
shall be sized for the fire pump. Their thought process is that if the building
can remain operable (lights on, etc.) during a power
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On Thu, Aug 26, 2021 at 9:30 AM Kyle.Mo
Joe,
Is this a real problem or a theoretical problem? What I mean is, are you still
in the design phase or is it actually installed like this and causing a
problem?
I could see there maybe being some trouble initially just getting all the air
out of the system. Maybe you could use a valved
That's the sole purpose of a draft curtain, so it better be acceptable for that
use. In fact, I think your question is more directly addressed in 12.3(2) where
it says the requirements of 12.3(1) shall not apply where the areas are
separated by a draft curtain...
Maybe I'm not understanding
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