Steve are you sure about that 1A classification? Flash point < 73 degrees (F)
with a boiling point temp of <100 degrees (F)?
80% Ethyl Alcohol is a 1B.
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South
piping. I bet they 90 over to
some device and really have a ductile iron or such fitting connecting to the
unit.
> On Mar 3, 2022, at 8:22 AM, Prahl, Craig/GVL via Sprinklerforum
> wrote:
>
> I spoke with a technical rep at Ames earlier in the week regarding this
> quest
I'd remind them that if there are any obstructions found in your aboveground
system, they will be charged for any project delays, system repairs or other
damages.
I had a contractor do that on a project of mine and while doing a trip test
(dry pipe system) we couldn't get the system to pass.
;> environment is considered 'harsh', the anodic index delta must be smaller
>>> (approximately 0.15 V) in which case, some sort of dielectric
>>> fitting/sacrificial anode would be needed for joint longevity.
>>>>> As I am not an expert, I suggest reaching out t
I've got a engineer asking about the joining of grooved stainless to grooved
black carbon steel and if there needs to be a special dielectric or similar
type of assembly used to join the two?
I've been hunting on the interwebs and haven't found any type of special
coupling or should the
Enclosed is four walls. If it doesn't have four walls around the cab it's a
hoistway not an enclosed shaft.
Craig Prahl | Jacobs | Group Lead/SME – Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
CONTACT BY: email or MS
I've been involved in several system failure investigations. There are
numerous causes.
Things to look for:
1. Rolled grooves: were the grooves in the pipe determined to have been done
correctly and to manufacturer's specifications?
2. Were coupling bolts torqued to proper spec. This one is a
What are the depths of the joists, the depth of the insulation and the spacing
between the joists?
Craig Prahl | Jacobs | Group Lead/SME – Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
CONTACT BY: email or MS TEAMS
So a couple of questions come to mind.
Does the applicable local code require sprinklers?
Does the owner want sprinklers even if the code doesn’t require them?
Where is this building located? Remember, a wet system needs to be in a heated
space, if the hangar is in a northern climate where
Have you looked at NFPA 409 and the current Building/fire codes?
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
CONTACT BY: email or MS TEAMS
-Original Message-
From:
Thanks Cecil,
The attachments didn't come through but several other members of the forum had
sent me the tables.
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
CONTACT BY: email or MS
I'm in the middle of a whse renovation project study and the original design
used NFPA 231, it references 1978 NFPA 13, Table 2.2.1(B).
Would anyone have a copy of the 1978 NFPA 13 and could send me a snapshot of
that Table?
I've looked on the NFPA site and they don't have versions available
Take it a step farther. You need to look at all the various areas within the
building. For multi-use buildings, you can have various levels of hazards
under one roof. This is one reason why you can't use the annex as an end-all
of occupancies.
Tall, open areas need to be looked at
These things are like 98% plastic. Maybe the motherboard is or isn't a
plastic, not really sure. I took one of ours apart after it was struck by
lightning. There's no metal in it at all.
Regardless of packaging, I would be calling it a Group A plastic commodity.
Craig Prahl | Jacobs | Group
Is this is a storage area or part of a processing area, different hazards are
present depending on specifics.
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
CONTACT BY: email or MS
The liquid is a corrosive, non-issue from our perspective.
I would wager they don't have adequate secondary containment or spill control
within the room where these are stored which is why they're using these IBC
containment units.
I'd be curious how many totes do they store in this area? If
You don't have 5 ft of commodity. The liquid within the tote is irrelevant to
the hazard. You essentially have a plastic hazard that is 10 ft in height.
Now, there are some schools of thought that derate the level of hazard due to
the liquid acting as a heat sink and thereby providing a
I would be addressing this as plastic storage since the liquid is a
non-flammable/combustible liquid and there is the presence of empty plastic
containers.
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville,
Shielded fires wouldn't be my primary concern, fuel density and fire intensity
would be my concerns. A little fire in a truck can be handled by a fire
extinguisher. I'm not sure if food trucks are required to have anything other
than that for fire control. But a fire in one of these units is
First off, it needs to be determined based on the CODE or local ordinance if
this is even allowed. Forget NFPA 13 for the moment.
The fuel loading within a typical food truck is pretty high considering the
amount of gasoline and propane in each truck. If you look at this simply from
a
ing Technician | Bamford Fire Sprinkler Co., Inc.
P:785.825.7710
F:785.825.0667
A: 1383 W. North Street Salina, KS 67401
-Original Message-
From: Sprinklerforum On Behalf
Of Prahl, Craig/GVL via Sprinklerforum
Sent: Wednesday, January 5, 2022 9:14 AM
To: sprinklerforum@lists.fir
rum On Behalf
Of Prahl, Craig/GVL via Sprinklerforum
Sent: Wednesday, January 5, 2022 9:14 AM
To: sprinklerforum@lists.firesprinkler.org
Cc: Prahl, Craig/GVL ; Matt Grise ;
Kevin Hall
Subject: RE: Thread connection holding on one thread only
The depth of engagement to form a leakproof connectio
The depth of engagement to form a leakproof connection is dependent on the pipe
diameter and system pressure.
For general talking purposes per ASME B1.20.1, for NPT pipes, a 1.25" pipe is
shown as having 11.5 threads per inch with the typical hand tightening
limitation at 4.5 turns for a depth
Some engineers and engineering firms do not edit specs to make them specific to
the project. They leave everything in the spec so they can just change a date
and project number and issue it for any type of project and figure the
contractor is supposed to figure out what applies and what
is week
AFSA
On Wed, Dec 15, 2021 at 2:49 AM Prahl, Craig/GVL via Sprinklerforum
mailto:sprinklerforum@lists.firesprinkler.org>>
wrote:
I have searched the from the deepest depths to the highest heights within NFPA
13 for a solution and am coming up empty.
We have a freezer warehouse, stor
James, I'm curious what is your plan for sprinkler protection of these
materials? For many in the IB category water alone is virtually of no affect.
Especially when it comes to those classified as hydrocarbons.
I do hope the owner or someone provided you with SDS info on the materials.
Craig
There are two categories when dealing with the spillage of hazardous materials.
The first one is Spill Control the other is Secondary Containment. It needs
to be established as to which is required.
The establishment of the requirement for secondary containment defined within
the IFC. NFPA
I have searched the from the deepest depths to the highest heights within NFPA
13 for a solution and am coming up empty.
We have a freezer warehouse, storing packaged meats on foam trays which are
placed in plastic trays. The frozen meat per NFPA 13 is a class III, the kicker
is the exposed,
825 direct 260.487.7824 /
> cell 260.417.0625 / fax 260.487.7991 email mmo...@shambaugh.com
>
>
>
> -Original Message-
> From: Sprinklerforum
> On Behalf Of Prahl, Craig/GVL via Sprinklerforum
> Sent: Wednesday, September 15, 2021 9:07 AM
> To: sprinklerfor
(218) 279-2436 direct | (218) 310-2446 cell LHB, Inc. | PERFORMANCE DRIVEN
DESIGN
-Original Message-
From: Sprinklerforum On Behalf
Of Prahl, Craig/GVL via Sprinklerforum
Sent: Wednesday, September 15, 2021 8:07 AM
To: sprinklerforum@lists.firesprinkler.org
Cc: Prahl, Craig/GVL ; BR
I'd like to piggyback on this conversation since it migrated towards fire
apparatus capabilities. I have a client with a multi-building industrial site
which has a fire pump providing flow and pressure to a site wide fire loop
which serves both hydrants and building sprinkler/standpipe
If you look at the definitions in NFPA 13 of the various occupancies, the
presence of diesel fuel (combustible liquid) would dictate an EH2.
With electric pumps OH1 or OH2 would be fine.
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East
No. Just because a generator is present doesn't automatically require it to be
connected to the fire pump.
The requirement of secondary or backup power for an electric fire pump is
directly related to the reliability of the primary power source and other
factors, some which may be code driven,
I have doubts that the "engineer" has any clue what a jockey pump does or how
it works.
So, you'd have a connection on the suction side of the fire pump that typically
connects back to the discharge side of the pump. Does the engineer think you
are going to take and route another connection
Does the water tank also provide water to potable systems or is it just
dedicated to the fire sprinkler systems?
This is the one reason why BFPs are not installed on the suction side of pumps.
If it's required, take it out and put it on the discharge side. The question
does come to mind in
4.3.1.1.4 is where I usually take a stand and expect any function that is
related to the operation of the CA system to originate within the CA system
releasing panel. Now there have been times when things such as dampers and AHU
shutdown have had primary control in BMS or a PLC and we had the
therefore not be considered, nor relied upon, as such.
Bob Caputo, President
American Fire Sprinkler Association
-Original Message-
From: Sprinklerforum On Behalf
Of Prahl, Craig/GVL via Sprinklerforum
Sent: Tuesday, July 6, 2021 10:47 AM
To: sprinklerforum@lists.firesprinkler.org
Cc
ttp://www.firesprinkler.org/trainers__;!!B5cixuoO7ltTeg!TVb4HhVqGQkfYgH1yXI2yMhPH9cH16hP1L-R9uVeY3LqbPxGbKfbNYKU13O-0Eqajw$
> for more information.
On Tue, Jun 29, 2021 at 2:43 PM Prahl, Craig/GVL via Sprinklerforum <
sprinklerforum@lists.firesprinkler.org> wrote:
> I think t
I think the question was related to the material, not the height of the
extension above the slab.
1. Go to the manufacturer's data and see if it is listed to be installed above
grade per UL and/or FM as a fire riser.
2. Exposure to elevated temperatures such as in a fire event can cause
bafe511*7C0*7C0*7C636379016677342180=eGdMZGu2wXhUupGwgGTrqF3b54OP5*2BAZvlHhABSexWY*3D=0__;JSUlJSUlJSUlJSUlJSU!!B5cixuoO7ltTeg!TbhbVfeVYScuQbgWTaK5_QrjN4ennB3fPRXxf9fzmS-8Y1xry_7_iBOEHazg27rPDQ$
>
From: Sprinklerforum On Behalf
Of Prahl, Craig/GVL via Sprinklerforum
Sent: Monday, Jun
://www.fire-design.com__;!!B5cixuoO7ltTeg!VIFOlr4gzA-Y8WAyIEVFQ2jJrf3Kw-mUdrihyP89TzChefgrazPOYRPm8ChMruYeQw$
-Original Message-
From: Sprinklerforum On Behalf
Of Prahl, Craig/GVL via Sprinklerforum
Sent: Monday, June 21, 2021 10:37 AM
To: sprinklerforum@lists.firesprinkler.org
Cc: Prahl, Craig
dor?
Matt
-Original Message-
From: Sprinklerforum On Behalf
Of Prahl, Craig/GVL via Sprinklerforum
Sent: Monday, June 21, 2021 9:37 AM
To: sprinklerforum@lists.firesprinkler.org
Cc: Prahl, Craig/GVL
Subject: Calculating Parallel fire pumps
We have a project in one of the Arab states. We are
We have a project in one of the Arab states. We are following a little bit of
the UFC and some of the local codes.
The owner wants two pumps selected at 50% of the required capacity instead of
one pump as we would normally provide. His thought is that pump 1 comes on and
runs at 50% of it's
Check your email.
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
CONTACT BY: email or MS TEAMS
-Original Message-
From: Sprinklerforum On Behalf
Of James Crawford via
I've had two projects recently with walkable ceilings, one was pharmaceutical
and another microelectronics. Both had sprinklers above the walkable ceiling.
One was an FM insured the other was not. The space is accessible and the whole
purpose of the walkable ceiling was to aid in access to
What's the occupancy classification of the occupied space below?
Next question, what is the interstitial space being used for?
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
CONTACT
You'd use the flow data you got from a nearby hydrant flow test. Typically
I've not seen a ground tank that supplies a municipal system via gravity. In
the municipal installations I've dealt with, a ground tank where there was no
elevation difference had pumped supplies.
Craig Prahl | Jacobs
The difference would be that you are NOT 100 ft above ground. You have a
ground suction tank where the water level might only be a foot or two above
ground.
Apples and oranges.
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler
Steve, did you get my email with hydrant info attached?
Craig Prahl--
-Original Message-
From: Sprinklerforum On Behalf
Of Steve Leyton via Sprinklerforum
Sent: Tuesday, April 27, 2021 12:46 PM
To: BRUCE VERHEI ; sprinklerforum@lists.firesprinkler.org
Cc: Steve Leyton ; Bob Caputo
Are site Fire Flow requirements (IFC Section 507) what you're referring to as
"hydrant demand"?
At minimum, the pump should be capable of flowing the sprinkler and related
hose stream allowance flow rate combined.
BUT, when there have been no municipal hydrants to be used for the actual
Correct. Requirements of the IEBC are specific as they relate to the new work
being done in the existing building.
It would be a massive financial disaster to require all existing buildings to
come into compliance with current codes based solely on the adoption of a new
code.
Craig Prahl |
The IEBC is applied to an existing building when you are performing new work
such as renovations or reconstruction within that existing building.
The IEBC makes allowances for certain conditions and has less stringent
requirements than the IBC when you are working in an existing building.
You
If the IEBC was adopted by legislation without amendments, you would be
required to comply with any and all NFPA Standards referenced in that Code
which were applicable to your type of building or occupancy.
BUT, this does not mean existing buildings have to now go and install systems
that
Michael, when you say "flush heads" do you mean concealed type sprinklers with
covers like often used in offices? If so, they are typically not Listed or
Approved for anything but light hazard type occupancies. I would not consider
this type of area to be LH.
Craig Prahl | Jacobs | Group
Cellophane bags covering sprinklers will not initiate any kind of recall. This
is a common practice for paint booths and is referenced within NFPA 13. The
bags are to be no thicker than 0.003 inches or 0.08 mm. These bags must be
cellophane or paper not just any type of plastic and should be
Carr, SET
Project Manager/Design
Diboco Fire Sprinklers, Inc.
325 Jackson Loop Road
Flat Rock, NC 28731
rich...@diboco.com
828-696-3400
828-696-2288 Fax
828-708-9118 Mobile
-Original Message-
From: Sprinklerforum On Behalf
Of Prahl, Craig/GVL via Sprinklerforum
Sent: Thursday, March 18,
I searched NFPA 13, 15 and 72 and couldn't find anything referring to a
separation between a detector and a sprinkler.
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
CONTACT BY: email or
otw$>
From: Sprinklerforum
mailto:sprinklerforum-boun...@lists.firesprinkler.org>>
On Behalf Of Prahl, Craig/GVL via Sprinklerforum
Sent: Thursday, February 11, 2021 1:20 PM
To: b...@firebyknight.com<mailto:b...@firebyknight.com>;
sprinklerforum@lists.firesprinkler.org<mail
This is something that really needs to be looked at I future editions of NFPA
13. I know we've had this discussion many times.
I would love to hear how this came about. It offers no benefit to an owner and
only increases cost.
Craig Prahl | Jacobs | Group Lead/SME – Fire Protection |
w.firesprinkler.org*2fschools.=E,1,CkNDea30BW_p5PaehQxMO3eRwHYTkGmF9RG7CK-Tg6pAjv26sHa5xbez5VcvdrA3_bNOdsviMED4IPcjgtTOFLPwHIsX1h8miGVMY5w-Mm_pvxE,=1__;JSUlJQ!!B5cixuoO7ltTeg!TMNFcfNkcjX7Kv654ixgVlbqCccIDIF8jGkZYOVNeF8vyiO5jIz6UKWvfrtzClNI7g$
On Mon, Feb 1, 2021 at 2:50 PM Prahl, Craig/GVL vi
Contact one of the foam manufactures of the product. They can give you all the
info you need.
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
CONTACT BY: email or MS TEAMS
-Original
IMHO, if ESFRs are installed, ESFR obstruction rules should apply regardless of
how they are currently using it. Is there a legally defendable argument for
ignoring the ESFR rules?
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East
Yes, the plastic is the material first exposed to the fire/ignition source.
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
CONTACT BY: email or MS TEAMS
-Original Message-
From:
So, I'll assume this battery assembly will be in some type of occupiable
enclosure which will have environmental control.
I would definitely not extend or try to tie it into any existing PreAction
system.
I would be looking at a stand alone suppression system, either clean agent or
aerosol
Steve,
Can you provide a better description of this unit? How far from the building
will it be located?
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
CONTACT BY: email or MS TEAMS
I concur.
RVs represent a concealed hazard, boats not so much unless they are larger with
cabins. Then consider the proximity of one unit to another. Any fire is going
to involve several units. Even EH2 would probably be like spitting on a forest
fire.
Building height also plays a role.
Clarify please. What storage is not going to exceed 12 ft? How high are the
high bays? When you say RV are you talking about motorhomes and/or travel
trailers?
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road
Industrial buildings with open grating between levels can be a little more
involved than just calculating a density/area.
First, what's the hazard? Are ignitable liquids involved? At what levels?
Any at high pressure (over 15 psig)?
Is the building open sided or fully enclosed?
How large
lerforum
> <mailto:sprinklerforum-boun...@lists.firesprinkler.org> On Behalf Of
> Prahl, Craig/GVL via Sprinklerforum
> Sent: Thursday, December 10, 2020 11:33 AM
> To: mailto:sprinklerforum@lists.firesprinkler.org
> Cc: Prahl, Craig/GVL <mailto:craig.pr...@jacobs.com>; James Lit
161
>
>
>
> -Original Message-
> From: Sprinklerforum
> <mailto:sprinklerforum-boun...@lists.firesprinkler.org> On Behalf Of
> Prahl, Craig/GVL via Sprinklerforum
> Sent: Thursday, December 10, 2020 11:33 AM
> To: mailto:sprinklerforum@lists.firesprinkle
Very good question. I've read discussions on this issue recently as well and
really wonder what was the thought process behind including a non-existent flow
value in the system design and calculations.
I would love to hear the rationale for this section.
Craig Prahl | Jacobs | Group Lead/SME
Consult the pump manufacturer (if you don't have the information) and find out
what the minimum acceptable NPSH is for that pump. It can vary based on pump
design and selection criteria
but if the suction pressure falls below the mfgrs. NPSH you can end up with
pump cavitation and destroy the
First thing is that you need to know what you're dealing with. Some ignitable
liquids can be handled using a standard water based sprinkler systems designed
for EHII. Others may need the addition of foam to control a fire due to them
not being a miscible liquid. Think water on a cooking oil
If my main concern is assigning a proper fire protection design criteria and
it's not your typical hazardous chemical, I start with the MSDS/SDS and look at
the fire fighting section. Now that won't tell you what density to use but
what it will tell you is what acceptable means
for
1A materials are fairly uncommon. Often they are mislabeled due to people only
looking at the flash point and not at the boiling point of the liquid.
In cosmetics 1B is common.
You need to know exactly what the material is. Request a SDS on the material.
NFPA doesn't get into comparing
2019 edition of NFPA 20 has references to the acceptable use of suction
diffusers on fire pumps.
Does anyone have a model or mfgr. of a listed one?
I've been looking but still haven't found one yet.
Craig Prahl | Jacobs | Group Lead/SME – Fire Protection | 864.676.5252 |
You're gonna have to provide a WHOLE Lot more info than that. There are
numerous processes, different types of seeds, different types of
cleaning/hulling processes etc., etc., etc., etc
There is no one size fits all sprinkler density answer.
Craig Prahl | Jacobs |
that should be
provided to the installing contractor before they can begin their work.
On Thu, Oct 8, 2020 at 12:39 PM Prahl, Craig/GVL via Sprinklerforum <
sprinklerforum@lists.firesprinkler.org> wrote:
> You cannot select a fire pump when no water flow test has been done,
> you don’t h
of the EOR.
Look at the requirements for the owners certificate. All that should be
provided to the installing contractor before they can begin their work.
On Thu, Oct 8, 2020 at 12:39 PM Prahl, Craig/GVL via Sprinklerforum <
sprinklerforum@lists.firesprinkler.org> wrote:
> You cannot sele
YMvEVomaeod3w$>
8201 Norman Center Drive, Suite 500 \ Minneapolis-St. Paul, MN 55437
*Registered in: LA, MD, MN, PA, TX, & UT
**NICET IV - Water-Based Systems Layout
-Original Message-
From: Sprinklerforum
mailto:sprinklerforum-boun...@lists.firesprinkler.org>>
On Behalf
ou need to know and never miss another
issue.
On Thu, Oct 8, 2020 at 11:08 AM Prahl, Craig/GVL via Sprinklerforum <
sprinklerforum@lists.firesprinkler.org> wrote:
> Just a general question.
>
> Do you submit your shop drawing package to the EOR as one package or
> do you s
Just a general question.
Do you submit your shop drawing package to the EOR as one package or do you
submit components first and then later the layout drawings and calcs?
Craig Prahl | Jacobs | Group Lead/SME – Fire Protection | 864.676.5252 |
craig.pr...@jacobs.com | www.jacobs.com
1041 East
What is the ESFR system design basis? Racks or other storage or what?
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection | 864.676.5252 |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
-Original Message-
From: Sprinklerforum On
The minimum for ESFRs has to do with skipping. Same goes for CMSA type
sprinklers.
NFPA 13 Handbook- "Skipping occurs when the sprinklers do not operate in a
normal pattern and when
sprinklers some distance from the fire operate before those sprinklers closest
to the fire. Air movement and
Contents aren't as significant as the containers. Depending on their state,
(powder, meal, bulk, etc.) agricultural contents like these tend to represent
more of an explosion hazard when they are being processed and handled than fire
hazard while being stored. Some dried but unprocessed beans
Those are related to the capability of the structure and should be determined
by a structural engineer. The analysis of the structure is outside a sprinkler
contractors scope.
#1 is kind of worded weirdly since one should typically be more concerned with
the specific structural element you'd
Does anyone have any familiarity with using Smart Plant 3D for fire protection
design? We've got great experience with REVIT but are being
pushed into using SP3D because it works great for piping and of course we know
there's no difference between process piping and sprinkler piping.
Are there
and see what
they offer.
Thank you,
Bob Knight, CET III
Fire by Knight, LLC
208-318-3057
-Original Message-
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org]
On Behalf Of Prahl, Craig/GVL via Sprinklerforum
Sent: Tuesday, September 15, 2020 11:22 AM
To: b
Is it an enclosed or open array?
These typically are not specifically addressed in NFPA 13.
I have typically leaned on FM data sheets for design guidance on these special
types of storage.
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection | 864.676.5252 |
craig.pr...@jacobs.com |
It's good this is being clarified and defined in the upcoming edition.
Hopefully that will resolve the confusion on this issue once and for all.
But, now back to 2020..
Craig Prahl | Jacobs | Group Lead/SME – Fire Protection | 864.676.5252 |
craig.pr...@jacobs.com | www.jacobs.com
Playing the devil's advocate here, one could argue that the presence of an
electrically energized air handler negates the part stating "minimal
combustible loading", that this is actually a mechanical closet not just a
"concealed space".
Craig Prahl | Jacobs | Group Lead/SME - Fire
A residential boat dock?
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection | 864.676.5252 |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
-Original Message-
From: Sprinklerforum On Behalf
Of Hinson, Ryan via Sprinklerforum
Ben,
Since we don’t' have a drawing or layout of what is where, there's going to be
a lot of speculation and possibly misdirection when it comes to suggestions.
So you'll have to sort through it all and find the applicable stuff.
NFPA 80A provides direction on exposure protection
What do the specs say you're supposed to use in place of c-clamps?
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection | 864.676.5252 |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
> -Original Message-
> From: Sprinklerforum
> On
I wouldn't install a non-conforming component no matter who said they'd take
liability. For me to install it knowing it's not right still can still result
in some level of liability no matter how much I might protest. Unless the
manufacturer responsible for the listing of the product issues a
The horizontal mullions create a horizontal barrier to the water run-down of
the window sprinklers. So the architect is probably figuring that if they have
window sprinklers located up high near the top of the frame and those wet the
glass down to the mullion and then they have another row of
The language in 2019 NFPA 13, 27.1.2 was already stated in the 2016 edition in
25.2.1.4 and 25.2.1.4.2.
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection | 864.676.5252 |
craig.pr...@jacobs.com | www.jacobs.com
1041 East Butler Road Greenville, South Carolina 29606
-Original
Exactly. That statement should be made in your bid under Exceptions and
Clarifications. No responsibility or liability related to leaks in existing
systems if 200 psi pressure test is required.
Craig Prahl | Jacobs | Group Lead/SME - Fire Protection | 864.676.5252 |
craig.pr...@jacobs.com |
Sometimes it's not about how good of a job your fitters did but the unknown age
and condition of the existing system piping you're tying into. There are times
when a 200 psi test is all it takes to open up pinholes and create leaks. Now
the owner looks at you as being responsible and you're
z5PQ$
>
> Think they can be mounted horizontally and vertically.
>
> On Mon, Aug 17, 2020 at 10:44 AM Prahl, Craig/GVL via Sprinklerforum <
> sprinklerforum@lists.firesprinkler.org> wrote:
>
> > Has anyone had to provide a flexible assembly on a NOVEC 1230 system
> wh
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