r/firePE

Image 1 — Do I need sprinklers above and below this open-grid ceiling if it's for storage protecion?
Image 2 — Do I need sprinklers above and below this open-grid ceiling if it's for storage protecion?
▲ 7 r/firePE

Do I need sprinklers above and below this open-grid ceiling if it's for storage protecion?

(image is reference only) In a warehouse I have this type of ceiling (I think it's called metalscreen) and client want to protect what's below it (gun ammunition, Class IV storage) with ESFR sprinklers. I am not sure if I should place the sprinklers only at roof level or if I should need both, on roof and on the ceiling. I would appreciate your help with this topic, thank you.

Here is what I could find about this on NFPA 13 regarding Open-Grid Ceilings:

>
9.3.10* Open-Grid Ceilings. Open-grid ceilings shall only be installed beneath sprinklers where one of the following is met: (1) Open-grid ceilings in which the openings are 1∕4

>in.

>(6 mm) or larger in the least dimension, where the thickness or depth of the material does not exceed the least dimension of the opening, and where such openings constitute 70 percent of the area of the ceiling material. The spacing of the sprinklers over the open-grid ceiling shall then comply with the following: (a) In light hazard occupancies where sprinkler spacing (either spray or old-style sprinklers) is less than 10 ft × 10 ft (3 m × 3 m), a minimum clearance of at least 18 in. (450 mm) shall be provided between the sprinkler deflectors and the upper surface of the open-grid ceiling. Where spacing is greater than 10 ft × 10 ft (3 m × 3 m) but less than 10 ft × 12 ft (3 m × 3.7 m), a clearance of at least 24 in. (600 mm) shall be provided from spray sprinklers and at least 36 in. (900 mm) from old-style sprinklers. Where spacing is greater than 10 ft × 12 ft (3 m × 3.7 m), a clearance of at least 48 in. (1.2 m) shall be provided.

>(b) In ordinary hazard occupancies, open-grid ceilings shall be permitted to be installed beneath spray sprinklers only. Where sprinkler spacing is less than 10 ft × 10 ft (3 m × 3 m), a minimum clearance of at least 24 in. (600 mm) shall be provided between the sprinkler deflectors and the upper surface of the open-grid ceiling. Where spacing is greater than 10 ft × 10 ft (3 m × 3 m), a clearance of at least 36 in. (900 m) shall be provided.

>(2) Other types of open-grid ceilings shall be permitted to be installed beneath sprinklers where they are listed for such service and are installed in accordance with instructions contained in each package of ceiling material

u/Luiseus_XV — 14 hours ago
▲ 5 r/firePE

Determining the design flow rate for Backflow forward flow test

Greetings I have a building that is actually set up for a forward flow test. There are a half a dozen calc plates at the riser. The book says to flow the calculated system demand. What I did was just choose the design plac with the highest GPM number as the flow rate, as this is the most demanding design data. I figured that you would want the “worst case” numbers for the test.

I have performed this test 3 times and it never reaches the target GPM and pressure.

Here’s the other issue… The company that installed the system is no longer in business, and we have no proof that this flow test was ever passed initially, or which target numbers they chose to set as the goal.

So we font even know of the test was passed originally.

Any help would be greatly appreciated

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u/vagrants1 — 2 days ago
▲ 3 r/firePE+1 crossposts

Richmond VA Jobs

Hello,

I am moving with family to Powhatan, VA from NY. I have 5 years experience in plumbing / hvac. I have about 1 year of experience working with hvac controls and communication. I’m looking to pivot into low voltage work, specifically fire alarms. If there is anyone in the Richmond area who knows of companies hiring I would greatly appreciate it. Thanks!

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u/Anidem1 — 2 days ago
▲ 1 r/firePE

Sloped ceiling fire sprinkler installation.

Good day fellow fire protection practitioners, may i see some of you installtions on a sloped ceiling fire sprinklers pendent and upright. I need a reference for my upcoming project.

Reference photos and installtion drawing would be nice, thak you.

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u/MyAimSukks — 3 days ago
▲ 5 r/firePE

Where can I learn Revit specifically for Fire Systems Design?

Hi everyone,

I completed a Master of Fire Engineering at the University of Canterbury in New Zealand. Unfortunately, over the past year there have been very few entry-level Fire Engineering opportunities available here.

I have noticed that there are occasionally roles advertised as Fire Systems Design Engineer / Fire Protection Design Engineer, where employers are looking for people who can use Revit to design fire protection systems, particularly sprinkler and other fire services systems.

Because of this, I am currently learning Revit and would like to develop my skills specifically toward fire systems design.

The problem is that I have been struggling to find good learning resources for this area. There are some courses on Udemy covering things like Revit MEP and fire protection/sprinkler design, but many of them are only a few hours long. They seem useful as introductions, but I am not sure they go into enough depth to make someone job-ready.

For those working in fire protection design:

  • Where would you recommend learning Revit specifically for fire protection/fire systems design?
  • Are there any comprehensive online courses, textbooks, training providers, or project-based tutorials you would recommend?

I already have the Fire Engineering background, so I am mainly trying to fill the practical Revit / fire systems design gap and make myself more employable.

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u/New_Revolution7625 — 4 days ago
▲ 2 r/firePE

PDF NFPA CODES

Does anyone have or know how to get pdf versions of NFPA Codes? I already own physical copies, and I subscribe to NFPA Link, which I can’t stand personally.

I’m willing to even pay for some copies, just not the insane prices NFPA asks for them.

I’m looking for NFPA 13D 2019 or newer
NFPA 13R 2019 or newer
NFPA 20
NFPA 14
NFPA 24
NFPA 25
NFPA 291

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u/Funny-Dish-7733 — 6 days ago
▲ 1 r/firePE

Has anyone taken the School of PE Review Course ?

Has anyone taken the School of PE Review Course and would you recommend it ?

I was initially planning to take the SFPE review course but I've heard it wasn't that great so I'm looking into other courses.

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u/FloatingAK — 5 days ago
▲ 2 r/firePE

Engineering Career

I am a Mechanical Engineer with over 7 years experience in AHJ for Fire Protection. The issue is I don't really have any experience with working on projects like doing engineering anlaysis and stuff etc. Ideally, I would like to go for Masters in Fire Protection Engineering, as it can help me with my career growth and also would have better job opportunities to work and settle there. Suggest me some countries which are easier to get settle along with good programmes for Fire Protection engineering.

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u/Local-Formal-4797 — 5 days ago
▲ 3 r/firePE+1 crossposts

3rd year Service Tech/Helper

Been doing service work for around 3 years now. My company encourages nicet certification, and I was wondering if anyone here has any insight on tips for getting certified and what specific code book I should be studying. Thanks

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u/Patient-Car8880 — 6 days ago
▲ 13 r/firePE+1 crossposts

Every inspection software company claims it turns deficiencies into repair revenue. Does that actually happen at your shop?

Every ITM software site says the same thing: deficiencies go straight into a proposal and you land more service work.

Someone on here said deficiencies mostly die because nobody writes up anything complicated to begin with. That sounds more likely to me, and if it's right then the software is fixing the wrong end.

So if your shop wrote up 100 deficiencies last year, would anybody know how many got quoted? Or does it go to the office and then turn up on next year's report again.

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u/fxblitz12 — 10 days ago
▲ 0 r/firePE

Available for design

I am a full-time designer with my own entity, software and insurance. I am NICET level IV and available to take on design projects. I have successfully designed pretty much all occupancies with and without BIM. Let me know if I can be of any help.

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u/fire_sprinkler — 8 days ago
▲ 5 r/firePE

Need to hire a Fire PE in DC Area

Hi everyone, I'm currently working on a Fire PE role out of DC and would appreciate any leads. Ideally, I'd need someone with two to five years in design and its review, and could be good if they have worked on surveys and inspections.

Thanks

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u/Usual_Escape6608 — 14 days ago
▲ 3 r/firePE+1 crossposts

Efficiency in Sprinkler Surveys

Hello community,

I recently moved to the United States and am currently working on sprinkler shop drawings for a fire protection company in Fort Myers, Florida.

Over the past few weeks, I have participated in several sprinkler system field surveys and was somewhat surprised by how traditional the process still seems to be in many cases. We often rely on clipboards, paper sketches, tape measures, laser distance meters, and laser pointers to collect field information.

While researching possible alternatives, I came across several technologies that appear promising for improving efficiency and reducing survey time. These include:

  • Laser distance meters with Point-to-Point (P2P) measurement capabilities
  • 3D scanning solutions (LiDAR and reality capture)
  • Smartphone-based scanning applications, particularly those using iPhone LiDAR technology

Another challenge I have noticed is accurately identifying existing pipe diameters in the field. Overall, the survey process can require significant time and cost when considering travel, labor hours, and data collection.

I am curious to hear from others in the community:

  • What technologies or workflows have you successfully implemented to improve sprinkler system surveys?
  • Have 3D scanning solutions provided a worthwhile return on investment?
  • Are there reliable tools for quickly documenting pipe sizes and existing conditions?
  • Any lessons learned from transitioning away from traditional field measurement methods?

I would greatly appreciate any insights or recommendations.

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u/Potential-Hat5642 — 14 days ago