[Sprinklerforum] Re: [EXTERNAL] Re: Seismic data outside the US

When doing international work it’s always a good idea to partner with a local engineer/architect. Here’s a link to some info specific to Guatemala. Seismic Code Evaluation Form - Guatemala (eird.org) Craig Prahl |

[Sprinklerforum] Re: [EXTERNAL] Re: Floor Control Valves

A floor Control Valve at each level is an NFPA 13 Requirement. Either they’re installed or the system doesn’t pass inspection and no C of O. A FCV at each level just makes sense when it comes to future servicing of the system and not having to drain down all levels for a simple repair. A

[Sprinklerforum] Re: [EXTERNAL] Re: Protecting underground storage of explosives.

!B5cixuoO7ltTeg!HcoNsBHu1Kt7gDx9eIsIlgC7kQ0B1QsdtYW10ciYB40ZfDiIEMRpBgT8My0j_cMinCaHcEjjLt41ThaNNxWE-ws$> On Sat, Apr 6, 2024 at 1:20 PM Prahl, Craig mailto:craig.pr...@jacobs.com>> wrote: Munitions and explosives are typically protected via separation. On military projects, storage areas such as these are either semi

[Sprinklerforum] Re: Protecting underground storage of explosives.

Munitions and explosives are typically protected via separation. On military projects, storage areas such as these are either semi-subterranean (partially earthen covered bunker), or just physically separated from other structures by several hundred feet. I do hope the components are

[Sprinklerforum] Re: 1500' for Standpipe Test

1500 FEET OF HOSE? That's just insane. You're not going to get any results of any value out of that. Is this new parking lot made of tissue paper? I'd tell 'em no can do buckaroo. Plus I can't imagine the before and after of dealing with all that hose line. Craig Prahl | Jacobs | Fire

[Sprinklerforum] Re: Storage of EVA shoes

ons are used for uppers. Gum rubber and petroleum rubber for soles. I would be VERY sure of what you've got holistically... Steve L. From: Prahl, Craig mailto:craig.pr...@jacobs.com>> Sent: Thursday, March 28, 2024 11:01 AM To: Discussion list on issues relating to automatic fire sprinklers mai

[Sprinklerforum] Re: Storage of EVA shoes

That type of plastic is a Group C plastic (poly-vinyl family) which would be a Class III Commodity. So, I'd base my design off of that. On an SDS I found it also included water. "5.1.Extinguishing media Suitable extinguishing media: Water spray (fog), dry chemical, CO2, foams" Craig Prahl |

[Sprinklerforum] Re: Riser in a rated stair enclosure

I’ve never seen a requirement for a 1 or 2-hr enclosure of a riser in a stair. The stair towers I’ve encountered are typically rated 2-hrs and the combination sprinkler/standpipe riser located under the first landing or off to the unused side of the ground level has never been rejected by an

[Sprinklerforum] Re: [EXTERNAL] Re: NWD file

Sorry about this. Some engineering companies and clients are trying to get away from producing drawings and just issuing the NWD as the official design document. It’s garbage and just lazy IMHO. It is correct to assume there is a REVIT model of all the discipline work that would be contained

[Sprinklerforum] Re: Gang drain crossing seismic joint

Steve From: Prahl, Craig mailto:craig.pr...@jacobs.com>> Sent: Thursday, March 14, 2024 1:03 PM To: Discussion list on issues relating to automatic fire sprinklers mailto:sprinklerforum@lists.firesprinkler.org>> Subject: [Sprinklerforum] Re: Gang drain crossing seismic joint If

[Sprinklerforum] Re: Gang drain crossing seismic joint

If the section that crossed the expansion joint were to be torn apart would it have any functional effect on the bldg. sprinkler or standpipe systems? Craig Prahl | Jacobs | Fire Protection SME - Special Hazards | craig.pr...@jacobs.com |

[Sprinklerforum] Re: [EXTERNAL] Monitors

These aren’t really “designed”. You select one based on the required/desired flow and discharge throw (hose stream distance) you need to deal with the specific hazard. To include one in a hydraulic calculation you would use an Equivalent K-factor for the monitor. Craig Prahl | Jacobs | Fire

[Sprinklerforum] Re: Water Tanks

Best response I got was from Fisher Tanks located in Leesville, SC. I don't know if posting the contact name and phone number is allowed so email me and I'll send it to you. I needed an estimate and another well known company took forever to get back to me and after weeks, I told them to

[Sprinklerforum] Re: [EXTERNAL] Hazard Classification of Silk Screening

Ask about the composition of paints or any solvents (identify existence of any flammable/combustible liquids), any plastic drums or totes, storage of things like t-shirts, hats or other material that will be used. Are they in cardboard boxes or plastic bags or some other type container? Any

[Sprinklerforum] Fire Pump testing procedures

I have a project that requires two 1500 gpm pumps to meet the most demanding system requirements. Client doesn’t want any pumps over 1500 gpm. Long story. As far as testing, would you test each pump individually or together or ?? Trying to establish what we need as far as a test header.

[Sprinklerforum] Re: [EXTERNAL] Non Sprinklered Building Retrofit in California

It depends. Is their use (Building Code Occupancy type) the same as what was when the building was built? Owners will say they are the same often to avoid going through zoning hearings and other regulatory hurdles. So, for example if the building was originally constructed as an F-2, Factory

[Sprinklerforum] Re: [EXTERNAL] Autostore

Is this the one that is basically a huge cubed matrix with the robots running along the top? Craig Prahl | Jacobs | Fire Protection SME – Special Hazards | craig.pr...@jacobs.com |

[Sprinklerforum] Re: Proprietary Product

If The client can't give you a description of what they plan to do within the space, it would be in your best interest to just walk away. I've been dealing with Special Hazard occupancies in industrial facilities for a long time. There's not enough information in your description to just

[Sprinklerforum] Re: [EXTERNAL] Re: LIGHT-WALL SCH 7 NFPA

You can use any material but be sure it is acceptable to the Engineer of Record, the owner and possibly their Insurance Underwriter. Some will not accept Schedule 7 pipe in certain conditions. Craig Prahl | Jacobs | Fire Protection SME - Special Hazards |

[Sprinklerforum] Re: [EXTERNAL] Re: Sprinkler system area determination

The interstitial space has to be physically separated from the clean room below so that no air flow migrates into the clean room space. So very, very little chance of heat or smoke from the clean room migrating into the interstitial space. The catwalk is above 2-feet above the clean room

[Sprinklerforum] Sprinkler system area determination

I need a sanity check. I have a micro-electronics clean room area. H-5 occupancy. The interstitial space above is above 15 ft high and has catwalks which are above the cleanroom ceiling. Architects have deemed the interstitial space as “Equipment Platforms”, unoccupied space. Referencing

[Sprinklerforum] Re: [EXTERNAL] Distance to fire pump suction

4.29.3 Devices in Suction Piping. Where located in the suction pipe of the pump, check valves and backflow prevention devices or assemblies shall be located a minimum of 10 pipe diameters from the pump suction flange. Per the wording in NFPA 20, I’d have to say yes, the 10X rule applies. It

[Sprinklerforum] Re: Paint Line-Furnaces

If/when an applicable standard such as NFPA 86 tells you that no fire sprinklers are required within the oven, no sprinklers are required within and no "compensation" in the overhead is required unless it states so. You look at the overall area and the hazards present and then make the decision

[Sprinklerforum] Re: [EXTERNAL] Metric

We use what is used within NFPA 13. Craig Prahl | Jacobs | Fire Protection SME – Special Hazards | craig.pr...@jacobs.com |

[Sprinklerforum] Re: [EXTERNAL] Re: Best fire protection solution for dirty environment

If it has not already been mentioned, Per NFPA 13, we cover sprinklers with cellophane bags to protect against accumulation of foreign materials in places like spray booths or extremely dusty/dirty areas. Craig Prahl | Jacobs | Fire Protection SME – Special Hazards |

[Sprinklerforum] Re: ESFR Below Mezzanine

, I agree they are, I am questioning if they need to be ESFR to match the overhead or they can be different (CMDA, etc..) [cid:image001.jpg@01D9DA74.77FF45A0] Joe​ Burtell | SET, CFPS Fire Sprinkler Manager D C 406-204-4653 406-861-4507 From: Prahl, Craig mailto:craig.pr...@jacobs.com>> Sent:

[Sprinklerforum] Re: ESFR Below Mezzanine

T, CFPS Fire Sprinkler Manager D C 406-204-4653 406-861-4507 From: Prahl, Craig mailto:craig.pr...@jacobs.com>> Sent: Tuesday, August 29, 2023 9:28 AM To: Discussion list on issues relating to automatic fire sprinklers mailto:sprinklerforum@lists.firesprinkler.org>> Subject: [Sprink

[Sprinklerforum] Re: [EXTERNAL] Re: ESFR Below Mezzanine

ids, etc.. I threat that different than the overhead, different design, different sprinklers. [cid:image001.jpg@01D9DA70.93B427B0] Joe​ Burtell | SET, CFPS Fire Sprinkler Manager D C 406-204-4653 406-861-4507 From: Prahl, Craig mailto:craig.pr...@jacobs.com>> Sent: Tuesday, Augus

[Sprinklerforum] Re: [EXTERNAL] Re: ESFR Below Mezzanine

A mezzanine or equipment platform as is common in industrial type settings as described is very much an obstruction to the discharge of overhead sprinklers and NFPA 13 is very clear on the type of sprinklers that should be used to protect the area below the obstruction. If the area beyond the

[Sprinklerforum] Re: ESFR Below Mezzanine

A mezzanine is an obstruction to overhead sprinklers. Of that there is no doubt. Sprinklers need to be provide under the mezzanines as noted in the cited NFPA 13 section. Craig Prahl | Jacobs | Fire Protection SME – Special Hazards | craig.pr...@jacobs.com |

[Sprinklerforum] Re: [EXTERNAL] NFPA 20 (1983)

I've got a 1983 edition of NFPA 20 and the pump data showing minimum sizes of connections is the same as it is in the 2019 edition. Craig Prahl | Jacobs | Fire Protection SME – Special Hazards | craig.pr...@jacobs.com | www.jacobs.com 1041 East Butler Road Greenville, South Carolina 29606

[Sprinklerforum] Re: Non-fire connections

I really don't know (and don't care for purposes of researching a prohibition), just looking for anything codified as the owner of the building asked the sprinkie when they discovered the condition. Nobody seems to know how and when it was installed this way. Steve From: Prahl, Craig mai

[Sprinklerforum] Re: Non-fire connections

s an extremely compact horizontal fan coil unit, aka "pancake style". They've been used in apartments for many years in applications where soffit depth is limited. Steve From: Prahl, Craig mailto:craig.pr...@jacobs.com>> Sent: Wednesday, August 09, 2023 1:24 PM To: Discussion lis

[Sprinklerforum] Re: Non-fire connections

Pancake unit? Like a flapjack maker? Craig Prahl | Jacobs | Fire Protection SME - Special Hazards | craig.pr...@jacobs.com |

[Sprinklerforum] Re: Sandblasting room

It is expected that sprinklers would be out of the direct path of any blasting agents or blasting processes. We've used fusible link sprinklers in lieu of frangible bulb style heads and covered them with cellophane bags similar to a spray booth. Typically the issue you can have is just

[Sprinklerforum] Re: [EXTERNAL] Water filled Sprinkler Pipe Condensate issue

Walk away from this one. This is not a sprinkler system issue. It's a climate control issue. It's odd that a non-flowing system (sprinklers) is sweating. At some point the static water in the piping should acclimate to the room temperature unless there's an issue with heat stratification in

[Sprinklerforum] Re: [EXTERNAL] Re: Sprinklers in column enclosures

The omission of a requirement does not create a requirement. You can never prove a negative. I’ve had this argument before with someone saying I had to prove something wouldn’t happen. It’s just not possible. Does the code say I have to do it? Does the code address this particular

[Sprinklerforum] Re: [EXTERNAL] Re: Sprinklers in column enclosures

I can’t see how you could shoe-horn this into resembling a chase since a chase typically penetrates floors and creates a shaft. This column does not penetrate floors, does it? Why would this not be the same condition as an exterior column but just on the interior? What is the logic behind

[Sprinklerforum] Re: Fire Alarm Control Panel location

Typically they are placed at the most common fire department point of entry like a main lobby, fire riser room, security room or exterior guard house. I can't recall ever seeing a code mandated location. Locations are shown on life safety drawings and coordinated with the local fire

[Sprinklerforum] Re: Hangers on Seismic swing joint

The swing joints are not installed in the plane parallel with the piping, they are already "hanging down". Provide hangers on the main before the assembly per 9.3.3.3 and let it ride. However Figure 9.3.3(a) references 4" pipe and owing to the fact that we're talking about an 8" pipe, this

[Sprinklerforum] Re: [EXTERNAL] Re: canopy construction

So the reviewer wants you to put sprinklers below the roof to protect against a potential hazard ABOVE the roof? What would those sprinklers be protecting? I’ve seen combustible roofing hit by lightning and on fire. Amazon has had more than one occasion of a roof on fire in a fully

[Sprinklerforum] Re: [EXTERNAL] Re: Forward Flow testing valve arrangements

It comes from an elevated municipal water tank. Flow is not an issue. Craig Prahl | Jacobs | Fire Protection SME – Special Hazards | craig.pr...@jacobs.com |

[Sprinklerforum] Forward Flow testing valve arrangements

Providing an array of 2.5” hose valves as a test header for testing the backflow preventer. Sprinkler System demand is around 1800 gpm. So, here’s the debate, when determining how many valves you need do you consider each valve capable of 250 gpm or 500 gpm flow? Nothing in NFPA 13, the

[Sprinklerforum] Re: 2nd FDC Instead of a Hydrant ???

Not a FDC but a wall hydrant tied into the building's sprinkler system. Not uncommon in areas where typical yard hydrants cannot be installed. BUT, is the building fire sprinkler system supply designed and capable of providing sufficient flow for hose operations? You don't typically connect

[Sprinklerforum] Re: Storage Tank

Tanks are covered in NFPA 22. Running any supply to the tank underground creates a floor penetration which can become a hidden leak point in the future. If you get a leak in the tank floor, you've got an uncontrolled disaster. You'll also have to deal with cross-contamination control unless

[Sprinklerforum] Re: [EXTERNAL] Re: Pump installation over radiant heat floor

The heat transfer to equipment isn’t going to be any greater (and will probably be less) than anything experienced on a typical hot summer day in the south or out west. Usually they are in the 80-85°F range at the floor. The biggest issue will be with any supports that would typically be

[Sprinklerforum] Re: [EXTERNAL] Re: Plastics in Bin Box storage

I’ll also add to Ken’s comment in that much of what FM produces has dependencies on other requirements as well. Building construction, ventilation, etc. can also be part of the specific requirements related to a fire protection data sheet. Read the whole data sheet to be sure there aren’t

[Sprinklerforum] Re: [EXTERNAL] Re: Fire Pump Drains

annual NFPA 25 test data. I recommend main drain test are conducted with the fire pump in its normal operating condition. John John August Denhardt, P.E. Vice-President Engineering and Technical Services American Fire Sprinkler Association 301-343-1457 On May 11, 2023, at 12:31 PM,

[Sprinklerforum] Re: [EXTERNAL] Re: Fire Pump Drains

tion 301-343-1457 On May 11, 2023, at 12:12 PM, Prahl, Craig mailto:craig.pr...@jacobs.com>> wrote:  I’m not sure I understand the correlation between system drains and the subject of this post? There needs to be a drain from each sprinkler system valve, wet, dry, PA or Deluge, doesn’t ma

[Sprinklerforum] Re: Fire Pump Drains

I'm not sure I understand the correlation between system drains and the subject of this post? There needs to be a drain from each sprinkler system valve, wet, dry, PA or Deluge, doesn't matter. There needs to be a drain in the fire pump room. Craig Prahl | Jacobs | Group Lead/SME - Fire

[Sprinklerforum] Need help with a sanity check - Estimate

I have an in-house estimator who provided me an estimate of $2.77MM for a Pre-Engineered building, 350’x250’, open production area, no ceilings. 35,000 sf area with 45 ft high roof, 52,500 sf 30 ft high roof. Three wet pipe systems. Open racks with 2-level of in-rack sprinklers, approx. 1400

[Sprinklerforum] Re: [EXTERNAL] Re: Standpipes & FDC

Travis, what standard or code are you referencing? I would question the requirement of providing supervisory air in a manual standpipe based on the language of 6.1.1 specifically addressing Dry standpipes. A dry standpipe and a Manual standpipe are distinctly different. Craig Prahl | Jacobs |

[Sprinklerforum] Re: Ductwork more than 18 inches below a sprinkler line and less than 4'-0" in width

Here's a question, what did you find out in NFPA 13 when looking at the specific obstruction rules for the type of sprinkler you are providing? Determining if you have an obstruction problem isn't limited to just the general >48" and 18" clearance rules. Craig Prahl | Jacobs | Group Lead/SME

[Sprinklerforum] Re: [EXTERNAL] Re: Fire Station Apparatus Bay

7NRiV7p70C0f1biwbh44Y-iIA5GcmD1MCo] [https://ci3.googleusercontent.com/mail-sig/AIorK4yPfO1HdtbQPYiKlYE38cwc88ABhX7xN1nh0fCK5LjFXjKplJggk3Xn6_XypmtMWyADKR7ZRGk] On Thu, Feb 16, 2023 at 2:23 PM Prahl, Craig mailto:craig.pr...@jacobs.com>> wrote: It’s funny, if the diesel fuel was in anyth

[Sprinklerforum] Re: Fire Station Apparatus Bay

It's funny, if the diesel fuel was in anything other than a truck, it would be EH2. Some of the criteria makes very little sense, especially in cases like this where a fuel spill would most likely end up being shielded from overhead sprinklers and is a non-miscible hydrocarbon. Wait until we

[Sprinklerforum] Duct Sox-Flexible fabric duct systems - obstruction or not

I've hunted through NFPA 13 and have come up empty. I thought had recalled at one time seeing text addressing sprinkler spacing and the fabric ductwork. Is this still addressed? Craig Prahl | Jacobs | Group Lead/SME - Fire Protection | craig.pr...@jacobs.com |

[Sprinklerforum] Re: 6" Pipe & Z-Purlins

If you're dealing with a pre-engineered metal bldg., you need to consult the PEMB manufacturer for the proper method needed to support the pipe. How you approach it is dependent on the roof design. Some of these buildings are not designed with the idea of supporting much of anything from the

[Sprinklerforum] Re: Roof Vents Instead of Sprinklers?

It's not an option. Someone has no clue what they are talking about. I also laugh at any storage/whse type bldg. being designed for OH-2. I'd have them show me in the codes where it says if the sprinkler system is inadequate you can put in roof vents instead. Craig Prahl | Jacobs | Group

[Sprinklerforum] Re: [EXTERNAL] Class I commodity in bubble pack

Bubble wrapping a component inside a cardboard box is not encapsulation. Take a look at the NFPA 13 definitions of a Class I versus a Class II commodity. From what you described it probably better fits into the Class II category based on the presence of the combustible packaging material.

[Sprinklerforum] Re: plans and specifications vs design build

If the engineer had no idea how to layout out a system and size pipe, he shouldn’t have done it at all. Now if his goal was to be sure there was space allocated for the sprinkler system, for example he was part of a REVIT project, he should have stated that sizes were preliminary and subject

[Sprinklerforum] Re: [EXTERNAL] Pressure on placard greater that static.

Um, that’s not an unusual thing. Pretty standard. 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: Phone 1-864-676-5252,

RE: Distilled spirits

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

RE: [EXTERNAL] Joining black carbon steel with stainless steel piping

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

RE: 13D UG flush

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.

RE: [EXTERNAL] Re: Joining black carbon steel with stainless steel piping

black carbon steel with stainless steel piping >>> >>> I am not an expert on this topic. However, I was told the key was >>> corrosion mainly occurs when water flows on a regular basis. With water >>> flowing on a regular basis, corrosion becomes a larger concern.

Joining black carbon steel with stainless steel piping

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

RE: [EXTERNAL] Sprinkler in elevator pit.

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

RE: [EXTERNAL] 8 inch sprinkler pipe fall from factory ceiling

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

RE: [EXTERNAL] Obstructed vs Unobstructed Construction

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

RE: Group III Aircraft hanger

com> | www.jacobs.com<http://www.jacobs.com/> 1041 East Butler Road Greenville, South Carolina 29606 CONTACT BY: email or MS TEAMS From: Sprinklerforum On Behalf Of Bobby Welch via Sprinklerforum Sent: Wednesday, February 9, 2022 1:02 PM To: Prahl, Craig/GVL ; sprinklerforum@lists.firespri

RE: Group III Aircraft hanger

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:

RE: NFPA 13, 1978 Table 2.2.1 (B)

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

NFPA 13, 1978 Table 2.2.1 (B)

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

RE: [EXTERNAL] RE: INDOOR SPORTS FACILITY FIELD HOUSE

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

RE: Commodity Classification

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

RE: [EXTERNAL] Peat Plant

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

RE: question about Storage height

| 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: Steve Mackinnon Sent: Wednesday, January 26, 2022 3:16 PM To: Prahl, Craig/GVL

RE: question about Storage height

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

RE: question about Storage height

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,

RE: [EXTERNAL] Re: Food trucks inside a building

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

RE: Food trucks inside a building

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

RE: [EXTERNAL] RE: Open or exterior corridors

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

RE: Open or exterior corridors

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

RE: Thread connection holding on one thread only

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

RE: UFGS spec section 21 13 00.00 40 vs 21 13 13

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

RE: [EXTERNAL] Re: Sprinkler protection in a freezer warehouse - with plastics

<mailto:craig.pr...@jacobs.com> | www.jacobs.com<http://www.jacobs.com/> 1041 East Butler Road Greenville, South Carolina 29606 CONTACT BY: email or MS TEAMS From: Bob Caputo Sent: Wednesday, December 15, 2021 1:35 AM To: sprinklerforum@lists.firesprinkler.org Cc: Prahl, Craig/

RE: NFPA #30 Containment

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

RE: [EXTERNAL] Re: NFPA #30 Containment

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

Sprinkler protection in a freezer warehouse - with plastics

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,

RE: [EXTERNAL] RE: Fire Pumps and fire apparatus

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

RE: Fire Pumps and fire apparatus

; Prahl, Craig/GVL ; BRUCE VERHEI ; John Irwin ; Steve Leyton Subject: [EXTERNAL] RE: Fire Pumps and fire apparatus We do a fair amount of design at an Air National Guard base that has a HP fire line to service various hangers and the associated AFFF systems. This system was installed before

Fire Pumps and fire apparatus

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

RE: Fire Pump Room Sprinkler Classification

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

RE: [EXTERNAL] Transfer Switches

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,

RE: Fire Pump Backflow

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

RE: [EXTERNAL] Fire Pump Backflow

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

RE: [EXTERNAL] Re: Clean Agent System

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

RE: [EXTERNAL] Re: Stub-up Material

PM To: sprinklerforum@lists.firesprinkler.org Cc: Prahl, Craig/GVL ; John Denhardt Subject: RE: [EXTERNAL] Re: Stub-up Material The prior editions of NFPA 24 do not restrict the use of non-metallic spigot pieces (riser coming up through the floor from the underground piping) I discovered

RE: [EXTERNAL] Re: Stub-up Material

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

RE: [EXTERNAL] Re: Stub-up Material

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

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