Re: Car Wash Station

It's cut here...and dried over there... -- LOW combustibility -- MODERATE quantity -- MODERATE heat release rate Brad Quoting Bruce Verhei : I have not looked into car washes from a sprinkler hazard class perspective. I have looked at chemicals used. I’d be concerned

Re: Occupant load

"I’ve had 2 AHJ’s reject plans because we don’t have occupancy load." Travis, because it is two states in the same month my best guess is there is a 'new' plan reviewer in town assisting AHJ/Code Departments, the states are adjacent, the town is near the border, and the reviewer is

Re: ANSI A1171.1 Figure 307.3

Is there any distinction made for 'vertical circulation'? Quoting James Litvak : The standpipe is in a stairwell. Some of the stairs it'll be in the corner, others beside the door. All of them will be outside the required path of egress clearance. The definition of

Re: Average cost for 13D systems

I would think a home owner would (eventually) prefer to OWN their fire sprinkler water supply John-- lock, stock, and barrel... Brad. Quoting John Drucker : How much ? Are owners on board having in their homes ? How does the cost effect the square foot

Re: Average cost for 13D systems

Ya sorry Travis i drifted a little from the pith of the thread. I'm just wondering how to estimate $$/sf that would be in the ball park no matter where in the country it was, and since water supply varies from poor to good even across the same jurisdiction, and affects $$/sf I thought

Quick swaybrace calc question

Please refer to NFPA 13 (2016). Figure A.9.3.5(b) is a sample sway brace calc. at the bottom it says "Maximum Fpw per 9.3.5.5.2 (if applicable)." My question is-- are those max load tables based on lateral brace spacing ever NOT applicable? thanks, Brad

Re: [EXTERNAL] Re: Quick swaybrace calc question

Thanks for the clarity Kyle. Now I'll have more confidence about it. Brad. Quoting "Kyle.Montgomery" : You have to start somewhere. So whether you 'tentatively' space them at 40 feet or less than that, you have to run a calc and then check it against those tables.

Re: Quick swaybrace calc question

Thanks Ken, yes, I understand this. And I understand the zone of influence and so forth. But these Max Load Tables threw me when I got into them more- they seemed 'backwards'. In terms of calcing the loads in the Z.O.I., the 40' spacing will be greater than the 20' spacing. But I read

Re: Quick swaybrace calc question

They just seemed backwards Ken. Then I read Appendix E. I had made the mistake of thinking it was all about total weight from the zoi, so smaller pipe would be less weight, and after the adjustments to load ratings- if 4" at 40' is 'under', 2.5" at 40' would be 'underer'. My only conclusion

Re: Saw-Tooth Ceilings

I'm with Ron. See NFPA 13-2016 23.4.4.6.2. Brad. Quoting Ron Greenman : I'll agree the sprinkler knows nothing, but that is irrelevant. We are working with a mathematical model that will, if all the rules are followed, give us a reasonable degree of confidence that it

Re: Saw-Tooth Ceilings

Space the sprinklers like you were plumb-bobbing up. Calculate the density like you were plumb-bobbing down. B. Quoting Michael Hill : So you are saying that this is a series of 15 sloped ceilings one after the other, not a single obstructed saw tooth ceiling. I am not

Re: Saw-Tooth Ceilings

23.4.4.6 Deisign Densities 23.4.4.6.2, and for backup- 23.4.4.6.5. You don't have walls Michael, you have a sloped ceiling. The down-slope 'half' of the pattern is obstructed, be it sawtooth or not :). Brad. Quoting Michael Hill : That section explains what to do once the

Re: Saw-Tooth Ceilings

I mean, after all, if we can't figure 'half a pattern', how do sidewalls work? I'm out, because... i, I mean Roland and that face, I mean... Oh nevermind - - brad.. Quoting bcasterl...@fsc-inc.com: Sorry John, wrong side of history on this one. Brad. Quoting John Paulsen :

Re: Saw-Tooth Ceilings

Sorry John, wrong side of history on this one. Brad. Quoting John Paulsen : I've been watching this thread all afternoon and what I perceived to be a straight forward question has been complicated beyond anything I would have thought possible considering the original

Re: Standpipe Hose Valve HOSE VALVE

Thanks Matthew!! You too, Brad. Quoting Matthew J Willis : Happy Friday all! Can heat tracing be used on a hose valve? 14 states "Standpipe System" R/ Matt Matthew J. Willis Design Manager /3-D Specialist Rapid Fire Protection Inc. 1530

Re: [EXTERNAL] Re: Saw-Tooth Ceilings

These are all good points Kyle. But if I remember the original sketch right the obstruction is the vertical portion (fascia) and the sprinkler is ~1'-0" from it, so double that is ~2'-0". Since the next sprinkler (up-slope) is ~8'-0", with no obstruction in between, I think the density

Re: Average cost for 13D systems

Pressure Tanks are an approved water supply. No city connection. No BFP. No fire pump. I can see "13D Pressure Tank" brochures and the $$/sf stabilizing and, over time, coming down. Brad. Quoting John Drucker : EXACTLY, and the standby fees that are also being

Re: Sway Bracing exemption?

Even designers with many years of experience have trouble with this Carlo- it is rather subtle. My understanding is (and I don't mean to shout, upper case is meant for distinction): Where seismic protection is required- All MAINS have to be BRACED. All LINES 2.5" or bigger have to be BRACED.

Re: compressor size

pV=(m/M)RT, so, no :) Brad. Quoting James Crawford : Is there an easy equation out there to see how many CFM I require to fill a dry system, I am sizing an air compressor and would like to ensure I do not over or undersize it. Thank you James Crawford

Re: [EXTERNAL] Re: Saw-Tooth Ceilings

I have no doubt Roland will shoot this thing in the head by Lunch Time in Kansas, Tomorrow. Richard Bradley Casterline. Quoting "MFP Design, LLC" : No, you don’t ignore the obstruction. I agree with that. I was just pointing out that SxL is not always the same for

Re: [EXTERNAL] Saw-Tooth Ceilings

Anybody know what kind of wine goes best with crow? Thanks in advance, Brad. Quoting Roland Huggins : Kyle - You are correct. It would be 15 X 14 (assuming they can not comply with the beam rule) You can space sprinkler to sprinkler with up to a 36 inch

Re: Underground Main Between 2 Attached Building Areas

Like a spring that goes boing at the bottom of my heart Timothy- i read it over and over and over again. Brad. Quoting Timothy Goins : Sounds like a plan to me. Just meet NFPA 24 AND 13 on the install. Hopefully you'll install some sort of valving so the different areas

Re: Occupant load

"I guess I missed again" ~Phil Collins~ Occupant Load is the Architect's responsibility. It is used to verify required exit numbers, widths and locations, as well as minimum number of required toilet/drinking fountain fixtures. We going to have to show those 'plumbing counts' too soon?

Re: Occupant load

"Only when I'm really mad though..", signed... Mad Ken from The Sunflower State "There's no place like home" ~Dorothy~ This nonsense would never fly back home here Ken. Brad Kansas, USA Quoting Parsley Consulting : Sort of like this, Travis? When I receive a

Re: [EXTERNAL] RE: Underground Main

Like Steve said: Net Positive Spumoni Head Brad Quoting Steve Leyton : It's the minimum residual at the hydrant(s) to assure adequate NPSH for FD pumping apparatus. Steve L. Original message From: "Kyle.Montgomery"

Drop In Anchors for Seismic

Hello! This is not a pressing issue. I am having trouble finding manufacturer's literature for above subject. I want to know if, for example, listed for Seismic requires minimum 4000 psi medium concrete and minimum diameter and length to see if I can eliminate some of the options in 13 for

Re: Non-Combustible Concealed Space (NFPA 13 2013)

i'm always ready to go toe to toe unless there is any paperwork involved b Quoting John Drucker : What are you waiting for. 1) Request a written Notice of Violation which requires the adopted code citation(s). 2) Review the NOV and determine if code citation

Re: Hanger Loading

You gotta love the Technical Committee Members of old looking into the future and seeing Davine the hundred pound fitter with a hundred and fifty pounds of crank in her tool belt having to hang from the pipe she just hung. Brad Quoting Parsley Consulting : And

Re: Drop In Anchors for Seismic

Hello again. I found was I was looking for and it appears my fears were unfounded -- I didn't want to go through all the calculations satisfying 13 only to discover 'nobody makes it'. Like the chicken / egg question -- tc members write rules / manufacturers make things to satisfy rules. I

Re: [EXTERNAL] Re: Water Delivery Times

You're welcome Mark. For some reason I just flashed on me and a wall, and Roland asking me if I wanted a last cigarette, so here it is: I should have said the remaining *air in the path* from the clapper to the open flowing outlet. From the weight densities I can calc the velocity of eflux

Re: Protective Cap

Tell the other trades to stop making a mess every time the turn around Quoting Fpdcdesign : Concealer? On May 25, 2018 at 3:12 PM, (mailto:mphill...@jjkllc.com)> wrote: Not sure of the problem or the particulars. Have used these during construction

Re: [EXTERNAL] Re: Water Delivery Times

Happy Forum Friday Sir Mark! Weight density of water ~ 62.4 lb/ft^3. Weight density of air ~ 0.08 lb/ft^3. B Quoting "Mark.Phelps" : Am I the only one who wants to know where the "780 times" value is derived? Mark at Aero 602 820-7894 Sent from my iPad On May 18,

Re: exterior roof overhang - omitting sprinkler protection

I'm tired of my own voice Dewayne but I hate to see a brother flapping in the forum breeze. Too bad it's such an old edition. If you have to sprinkler it, and the attic system is dry, you could stub 1" (sloped slightly up) into the space to a regular sidewall. At least that would get rid of

Re: Water Delivery Times

What Ed said, but like Travis said, it might mean no longer a delay than as if it was a wet system. If you look at the traditional 60 second rule, and do some rough fluid mechanics for water vs air, you see 40 to 50 of that 60 is draining the air pressure from on top of the clapper. Once it

Re: the birth of the Hose Monster

Tom, Before it gets hot in her, (tomorrow morning) what is 'the little plastic tester'? B Quoting bcasterl...@fsc-inc.com: Yes indeed Tom. He started making them in a little fab shop in Kansas City, Ks. Since none of what he told me sunk in at the time I've had to read the brochure. The

Re: the birth of the Hose Monster

Saaweeet!! thanks Tom Brad Quoting Tom Duross : The hose monster 2, the little plastic baby. I have 6 and they are the best. -Original Message- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of bcasterl...@fsc-inc.com Sent: Sunday, June 10,

Re: the birth of the Hose Monster

Yes indeed Tom. He started making them in a little fab shop in Kansas City, Ks. Since none of what he told me sunk in at the time I've had to read the brochure. The basic idea might be that the more you increase the flow, the 'heavier' the Monster gets-- it has a dry gallon capacity so at

Re: Safety Margin

My last two cents (i guess i started it and Roland is nudging toward an end): A calculated system is simply a reconfigured pipe scheduled system, i.e., make the second piece 1-1/4 and get rid of the 8". Before calcs,5 heads on 1-1/2" was 'right on the curve'. If that was changed to 4, how much

Re: Safety Margin

That's probably it right there Steve-- pipe schedules were blind to water supply. Thanks, Brad Quoting Steve Leyton : I don't think we can predict that Brad, but pipe sizes were much bigger in those days, weren't they? If I had to guess, I think the safety factor would be "more" if the

Re: Pump Discharge Piping

With the suction control closed, and everything downstream tight, whether or not the checks were fully seated would not matter, right? Brad Quoting "Micah Davis, SET" : 100% above ground. Micah Davis, SET NICET #124745 Water Based Systems Layout, Level IVDynamic Fire Designs Mail:

NFPA Vegas Convention

I didn't make it again this year. "Caputo" is the only speaker name I recognized. Anybody have any earthshaking epiphanies? ___ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org

Re: NFPA Vegas Convention

I'm somewhere between torn down the middle and with you on this issue Scott. If it was required to estimate the water supply at the riser gauge often, as in with every required main drain test, I would endorse no safety factor-- the margin of error that makes me most uncomfortable is in

Re: NFPA Vegas Convention- sprks in elevators

Bruce, Twenty some years ago a city in Ks experiencing a highrise office space construction boom amended 13 to protect elevator shafts from sprinklers. It read something like, "Thou shalt not put sprinklers in elevator shafts". It was a compilation of original and cited reasearch that

Re: Safety Margin

Napping on and off in a corner during one of these heated debates is the the last item on my bucket list Ken. I'd be grinning ear to ear from the time y'all sent me out with some cash til the time i got back with the coffee and sandwiches. Brad Quoting Parsley Consulting : Richard, If my

Re: Protective Cap

"The sprinklers are sensitive by their design." ~Matthew J. Willis~ A big BINGO in my mind. Brad Quoting "Phillips, Mark" : The system should be treated as live and everyone made responible for taking precautions. The make products like the attached https://www.coverdome.com/ Can be

Re: Protective Cap

I used to turn in my papers here to the top dog teachers (with or without a shinny red apple ) with hopes for a gold star or smiley face on top- I don't hold my breath anymore. B Quoting "Mark Sornsin [FAR]" : Why do you hate progressive engineering minds? Mark Sornsin Sr. Fire

Re: Ceiling Grids and Flex Drops

The last problem I had like this Richard was in Reno, 1979. A Corp of Engineers guy told me I couldn't use toggles in precast hollow core concrete panels because it wasn't metal lath and plaster. Since then though it seems like all the AHJs i deal with get smarter every year. Brad Quoting

Re: Ceiling Grids and Flex Drops

Newton's Third Law? After I fry this fresh cloud based sprinkler applet I'll check your math Allan and respond off Forum if need be. :) You know I worked with the inventor of the Hose Monster? He told me when where and how he got the idea. I'm the Forest Gump of this industry: *worked with

Re: Drop-Out Ceiling Tiles

My best guess on why 5' max higher than they would be at the drop out level-- the higher the ceiling the longer the activation time no matter what fire growth rate is full scale tested. In this case there is an additional delay due to the sprinklers not being "sensitive" to the fire growth

Re: Ceiling Grids and Flex Drops

Hey Bruce! I'm trying to remember back to those old style yard sprinklers - the green ones with 3 bent arm , some little holes in each, spinning, with kids laughingly running through it on the 4th of july. Did those jump up and flip out when you gave them all the spigot had? Brad Quoting

the birth of the Hose Monster

The following is really all i remember about what Phil B said about the when where and how of the idea: 1) when--waiting to board a jet on a business trip to Cleveland. 2) where-- Kansas City International Airport, watching arrivals and departures. 3) how-- he said something about

Re: Protective Cap

As they should Steve! A good one would be able to prove the cup delayed the activation by 10 seconds, making the heat release rate 100 kW higher at that time than the control mode discharge rate was designed for. Brad Quoting Steve Leyton : And we used to screw 6” all day long. I’m not

Re: Safety Margin

Better late than never David. I'll skate on some thin Friday Forum ice and say I think the gridlock is in quantifying safety margin. The demands come from what scheduled systems delivered with top line pressures of 15, 30, 45, 60, and 75 psi 'delivered', not, "what minimum discharge rate is

Re: [EXTERNAL] Re: Staggering ESFR

I'm always thinking about all the bright young people getting into fire protection these days Steve. Most of what I post is an effort to arouse their curiosity and to assure them that, for their entire career, Fire Protection has nowhere to go but up. Brad Quoting Steve Leyton : That

Re: [EXTERNAL] Re: Staggering ESFR

For spacing it would be nice if instead of "L" and whatever that other one is and words like perpendicular we used x-y coordinates. Deflector distance could be z... It's a 3D world afterall. Brad Quoting JD Gamble : This was actually my mindset. And perhaps misplaced concern. Do I have to

Re: [EXTERNAL] Re: Origin of design density curves

Maybe Mark- I've never been any good at math myself. Thanks, Brad Quoting "Mark.Phelps" : One could state based on the complex math that is has a 100% safety factor. IMHO Mark at Aero Mark at Aero 602 820-7894 Sent from my iPhone On Jun 26, 2018, at 5:51 PM, "bcasterl...@fsc-inc.com"

Re: Origin of design density curves

I'm the same way Nick, and Bruce, I'll have to chew on this a while - like you posted a few years ago, "When the student is ready, the guru will appear". I love the last line of this article. I think it's where we're at! At the time, the UK and Australia was saying 0.05 was fine for

Re: main drain flows

Welcome. 410 gpm with 2" main drain 7.5 ft., 1 tee, 1 angle valve, 1 90 and 1 45. Same thing inch and a quarter would be 155 gpm. Brad Quoting Tony Cetani : Long time reader, first time writer.actually not that long I'm a fairly new designer. We have a

Re: main drain flows

Must have been LinkedIn Nicky. That K ( kPa metric ) looks like Coefficient of Discharge = 0.73. If it's the angle valve I would use 0.62. If it's the discharge outlet I would use 0.90. This results in: K=52.9 and 76.8 ( kPa metric ) respectively. I always love hearing about how other parts of

Re: S & L Rule

"In order to form a more perfect thirteen" we play like walls are not there even when they are, and rated no less-- density/area method-- and we play like walls are there when they are not-- as in this and the recent 'saw-tooth type' ceiling discussions. TC members have always kept it

Re: S & L Rule

I recently learned that the beam only acts like a wall if you can't throw under it, so get those deflectors way up there! (Crow and Thunderbird rocks) Merry Christmas Forum, Brad. Quoting Bob : The beam is an obstruction that acts like a wall. You’re covering floor

Re: S & L Rule

But Larry, if the beams are not an obstruction to heat flow OR spray pattern, it's like they don't exist, no? Brad. Quoting Larry Keeping : You don't need to do anything special with the deflector distance. As per 8.5.2.1.1 (2), the line spacing is to a wall or

Re: Rubber Tire Storage

Tires are hard to get lit and therefore hard to put out once you do (thermal inertia). Maybe the reason for the separate standard, more than the material composition, is the expected fire growth/decline rate, decline whether sprinklered or not. I read somewhere years ago with a tire storage

Re: [EXTERNAL] RE: Deflector Distance for Sprinklers in Skylights

I've tried to refind that fire modeling you did Roland a couple three centuries ago re how the deeper the pocket the better. It makes sense how if you have a huge mass of cool air above the area of the opening the ceiling jet just keeps on trucking like the opening wasn't there. It was

9" deflector is the sweet spot

Hi Forum. Prompted by the recent deflector distance in skylight thread and what I said about what Roland said about it and after about three weeks doing nothing other than imagining what happens -- I did some modeling on it. Ron G made me aware of the modeling ~5 years ago and at that

Re: Church Steeple

I would see if the AHJ would consider calcing (2) at each of (11) levels = 22 + 1 at the peak = 23. This approximates .1/1950. The 2 would be on the 'remote' side from the vertical supply riser. I envision what is referred to as a Spill Plume fire for calculating smoke exhaust rates in high

Re: 9" deflector is the sweet spot

I guess a pdf in a Dropbox is not even really necessary. What I learned from actually doing the modeling is that a skylight turns otherwise unobstructed construction into obstructed when the sprinkler is directly below it-- like Pete cited ~below the main ceiling like the skylight wasn't

Re: Church Steeple

This would be phenomenally interesting to analyze using all the latest tools, including but not limited to: 1) FDS 2) any current/familiar hydraulics software (or by hand) 3) Sprink Fdt (sp?). Brad Quoting bcasterl...@fsc-inc.com: I would see if the AHJ would consider calcing (2) at each of

Re: threaded union fitting - follow up

I was a nine year old with a transistor Bruce... imma go all in or fold-- give me a minute b.. Quoting Bruce Verhei : Searchers, 1964. I’ll raise you one. Seekers, 1964, with pipes in lyrics. https://youtu.be/4mpJYIACehQ On Feb 13, 2018, at 22:18,

Re: threaded union fitting - follow up

Makes sense Douglas. Matt: Mix - 1964 #8. Needles and Pins - The Searchers: http://www.youtube.com/watch?v=5rLqPtZUWJI=RD5rLqPtZUWJI Quoting Douglas Hicks : I don’t know about water, but gas piping is not allowed to have unions hidden in a wall. From: Matt Grise Sent:

Re: threaded union fitting - follow up

November 1, 1954 here. And, actually, I like The Forum most when it is rough and tumble and rather ugly-- it reminds me of home, so, so far it's been a pretty good week. Quoting Bruce Verhei : I started on Earth in 56. Sent from my iPhone On Feb 13, 2018, at 23:21,

Re: [EXTERNAL] Re: ESFR Heads in Concrete Tee's

She's the kind of girl whows not too shy and she can tell lm her kind of guy Quoting Roland Huggins : I guess you could call the side of the soffit a baffle but since it doesn’t extend below the pendent it really isn’t. Roland Huggins, PE - Senior VP Engineering

Re: [EXTERNAL] Re: ESFR Heads in Concrete Tee's

I never saw a wall that didn't go all the way down to the floor. Brad. Quoting "Mark.Phelps" : So this minimum space rule applies to sprinklers under soffits and on either side of a lintel? I guess I have been of the understanding that this type of obstruction was

Re: Draining System below ground....

Quoting Matt Grise : I am also getting phishing notices. Matt -Original Message- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Steve Leyton Sent: Thursday, February 22, 2018 4:59 PM To:

Re: Draining System below ground....

Mr Prahl been smokin hot here lately - on fire. Can I get a witness? b. Quoting "Prahl, Craig/GVL" : 40 gallon trash can and portable sump pump with hose to exterior or suitable drain. That or bucket brigade. :) Craig L. Prahl Fire Protection Group Lead/SME Direct -

Re: Underground Dry System Pipe Type

I would not extend a dry system underground - there's worms and stuff down there. B. Quoting Richard Matsuda : Since the pipe is running underground, is PVC or CPVC acceptable? Those are already used for underground piping for free-standing FDC's.Just trying to think

Re: QR/SR Sprinklers

Might be a good thing to kick around a little bit!- Quoting Rocci 3 Cetani : Currently Brad Casterline is frantically working up a model, give it a few days and I’m sure he will post a response  Rocci Cetani III, CET Senior Designer Water-Based Fire Protections

Re: Draining System below ground....

It's probably my dumba$$ fault. Time for me to unsubscribe. Later, Brad. Quoting Dale Wingard : Same thing happened to me a couple of weeks ago when I asked a question. Guessing that is why I didn't get a lot of responses. I did get 2 emails and 2 phone calls. Thanks

Re: S & L Rule

That's awesome Allen. I have often marveled at the fact that if Cad had occurred before Calcs, after we got spacing, location, and position right, we could have frozen the WALL and CEILING layers and sized every pipe in a matter of minutes! Brad. Quoting AKS-Gmail-IMAP

Re: S & L Rule

I beg your pardon *Allan. B. Quoting bcasterl...@fsc-inc.com: That's awesome Allen. I have often marveled at the fact that if Cad had occurred before Calcs, after we got spacing, location, and position right, we could have frozen the WALL and CEILING layers and sized every pipe in a

Re: HVLS Fan clearance

I doubt referring to the obstruction diagrams in 13 would hold up Steve, since regular obstructions don't affect the ceiling jet/floor jet/spray pattern interaction like BAFs do. We all know it should be fine, but AHJs need something black and white to hang their hate on. Is there a problem

Re: Lamella Roof

May I contact you off Forum? If yes please mail me here: bcasterli...@gmail.com Quoting Matthew J Willis : Brad, we go back a ways. But., You know better than most that heat detection is second to water. You are trying too hard my friend. Simulation will never..., Ever match real life.

Re: Lamella Roof

In Sharon's case the max 'detector' spacing will be 15x15. I pointed her to 72 because it shows how to calculate spacing under dome roofs. Brad Quoting "Prahl, Craig/GVL" : Sorry but I see no sprinkler correlation whatsoever with regard to NFPA 72 heat detector spacing. Detectors have an

Re: Fire Proofing joists

Obstructed is easy- 4" deep, 7.5 ft apart is obstructed. Here's the paradox though; if that's what you have, max deflector is 10", whereas if it was smooth ceiling, max is 12"! Brad Quoting "Phillips, Mark" : Thanks y'all I will follow up with quality of the installation. Appreciate the

Re: Fire Proofing joists

I can Kyle, a Standard has to apply to the anticipated majority of real world cases, with numbers. Very smart and experienced people have filled a box with every conceivable thing that could happen, jiggled it around, poured it out on a table, and said, "best to try this in that case".

Re: Process

4-10 Roland! I'll try to ship up or shape out. Brad Quoting Roland Huggins : As a matter of process, there is no need (and dare I say desire) fro the entire Forum to see a request to contact someone off Forum. Just copy THEIR email address from the received message and send it. Roland

Re: PRV after pump discharge control valve

This is very interesting Dewayne! You need a high pressure pump now--low pressure pump later, but since you have to keep the original pump you are thinking PRV on the discharge later. There might be another way: Replace the big impeller now with a small impeller later. I know how to make

Re: [EXTERNAL] RE: PRV after pump discharge control valve

"Just one more thing" ~Columbo~ Thanks Anthony for 'nice outside the box idea' comment. "sometimes it takes a Jimi thing just to keep me swinging" ~Dave Mathews~ With apologies to Tom Noble and Roland Huggins. Brad ___ Sprinklerforum mailing

Re: PRV after pump discharge control valve

Thank you Kyle, it means a great deal to me for you to say. I was curious about the application too, and saw a 1250 gpm, 2600 rpm with a range of 69 psi based solely on impeller diameter. Both impellers would need to be purchased and certified up front, and every one having signed off on the

Re: PRV after pump discharge control valve

One of these days you are going to have to start using some formulas and numbers youself Steve, because like you said, this is a technical forum, not a who can blow their own horn the loudest forum. Brad @ Quoting Steve Leyton : Have you ever noticed that a single pump series can be applied

Re: [EXTERNAL] RE: PRV after pump discharge control valve

I loved George. Especially when he was ripping me to shreds. b Quoting Steve Leyton : If George was still alive I wouldn't have had a chance to jump in. Steve Leyton (Sent from my phone; please excuse typos and voice text corruptions.) Original message From:

Re: PRV

May I contact you off Forum? If yes please mail me here: bcasterli...@gmail.com Quoting Jeremy Blocker : Had a question presented to me today that I’m not sure about. During a five year inspection we need to flow test all the PRV hose valves. Running hoses through a lobby of a hospital

Re: Lamella Roof

All I've got Sharon is to look at NFPA 72 spacing and position rules for heat detectors for dome roofs, since the first responsibility of a sprinkler is to be a heat detector, and 13 does not adress dome roofs. Brad Quoting Sharon Alves : So, nothing extraordinary? I’m thinking wood joist

Re: Lamella Roof

You're Welcome Sharon. And for some reason I have no doubt you know the difference between the first responsibility (heat detection) and the second responsibility (putting enough water on the floor). Brad Quoting Sharon Alves : Thank you everyone. On Jul 24, 2018, at 4:17 PM, Steve

Re: Chatty exchanges

Even on Friday, Saturday, and Sunday Roland? thanks, Brad Quoting Roland Huggins : When directing an email to an individual, the Forum is not the place for it. Email them directly. ___ Sprinklerforum mailing list

Re: Excessive Vibration of Pressure Relief Valve

Well, nothing to share. For some reason the valve was not acting up yesterday like it did in the report. Another reason why I think it has something to do with the discharge pipe going underground and tieing in to storm drain. Who knows what size that is, how many 90s, how far it is to the

Re: Sidewalls in Partial Soffits

I agree "heat collectors" are useless for pendents Travis. I think this is because they were installed horizontal. If they were installed vertical, they would be "heat directors", causing the ceiling jet to dip down and pop the head. That's what we have here. Brad Quoting Travis Mack :

Re: Sidewalls in Partial Soffits

Great point about what's not in the code Jerry- I see only WIDTH verbiage - nothing about length! Your AHJ mileage may vary. Brad Quoting Jerry Van Kolken : I have soffits over cabinets. The GC is asking if they can do a partial soffit just at the sidewall location to pop over the cabinet

Re: Sidewalls in Partial Soffits

I've never been so ready to rumble Travis, especially with a "standard". Brad Quoting Travis Mack : You can feel free to put your liability and career on the line for something like that. I don’t think it is supported in any code or standard. If I were doing the project in question I would

Re: Sidewalls in Partial Soffits

Activation is my forte Steve, I know what I'm talking about. Brad Quoting Steve Leyton : I'll bet the "standard" is quaking in its boots. What, exactly, do you find lacking or out of place about this standard you vaguely refer to? That it doesn't make provisions for these types of

<    1   2   3   >