Re: HIGH RISE BUILDING

So when it says "sprinkler pipe maximum working pressure" I can ignore it? How do I get this past the reviewer? Sent from my iPhone > On Aug 2, 2016, at 7:25 PM, Steve Leyton wrote: > > Okay, time to go outside the box -schedule 10 and 40 piping isn’t required to

Re: HIGH RISE BUILDING

Thanks for the information. What did you do for the 300psi limit on pipe? Sent from my iPhone > On Aug 2, 2016, at 6:36 PM, Steve Leyton wrote: > > We made 360 total head at churn if I recall correctly. Everything downstream > UL (USA) listed for fire – had to

RE: HIGH RISE BUILDING

Stored water as the second source? Seeing a lot of that here too. One under construction now has public refilling SB turned into a cistern, 400K gallons. I assumed just a 750 but probably 2 stage maybe using 1.4, not too many 2 stages out there above that so parallels required. Probably

Re: HIGH RISE BUILDING

While there is high pressure hose, standard attack lines are annually tested to 250 psi. At this pressure it is not unusual to have a few lengths fail test. By fail I mean burst, or more common slip at fitting. Anecdotal, my observations only. Of course weakest link theory applies. Large

RE: HIGH RISE BUILDING

We made 360 total head at churn if I recall correctly. Everything downstream UL (USA) listed for fire – had to hunt down check and butterfly valves from Victaulic rated for 365. Here in CA all high-rises have tanks, so PSH of about 7’ + pump rating at max churn. Big pump yes, but not a

RE: HIGH RISE BUILDING

Must have been one hell of a pump. There is no height limit in latest editions of NFPA 14. Standpipes that directly supply hose connections are limited to 350 PSI (stay tuned for 2019 cycle on that one) but there is no height or pressure limit on express mains that serve upper zones.

RE: HIGH RISE BUILDING

There is no height limit in latest editions of NFPA 14. Standpipes that directly supply hose connections are limited to 350 PSI (stay tuned for 2019 cycle on that one) but there is no height or pressure limit on express mains that serve upper zones. Our firm designed a 545’ single zone

RE: Stage Calc Hose Allowance

Reed: Code sez you need hose connections on BOTH sides of the stage, so 50 + 50 = 100 GPM inside if using "small hose connections supplied by the sprinkler system". If they are a "Class II standpipe hose connections" then you add 100 at the more demanding of the two and that's all. My

RE: High Rise Standpipe

This is just my 2 cents worth (in Canadian funds), but this is what NFPA 14-2013 says on the subject: 5.6.4* A test connection for testing the waterflow device shall be provided. A.5.6.4 It is acceptable to utilize a hose valve on the standpipe to test the waterflow device as long as the

RE: High Rise Standpipe

The specific information regarding the systems was passed along via a phone conversation. I assumed the Standpipe(s) in question were Class III, and posed the question as such, but was told they were Class II. There could be misinformation provided or interpreted. The question is still the

RE: HIGH RISE BUILDING

Seems I recall you can go up to 400 ft with a single zone if you use PRV's...may be an older ver6of 14 though. Sent from my Sprint Samsung Galaxy S7. Original message From: Dewayne Martinez Date: 8/2/16 4:33 PM (GMT-05:00) To:

RE: HIGH RISE BUILDING

No, not codified in any way. Although combined sprinkler and standpipe risers are by far the most common arrangement in high-rise buildings, you can have a dedicated sprinkler riser that separate from the standpipe system at the designer's option. Steve Original message

HIGH RISE BUILDING

Is there a limit to the height or number of stories a “zone” for a high rise building can supply? I have a spec written to say each zone can either be a maxim height of 275ft or 20 stories. Thanks, Dewayne ___ Sprinklerforum mailing list

Re: Sprinkler above freezer unit

Nice work. On Tuesday, August 2, 2016, tcfire wrote: > We set up a wireless video camera tied to a DVR. We watched the playback > and zoomed in on the heads during the defrost cycle and could see the small > ice chunks flying off the coils and hitting the bulb. After we

Re: Sprinkler above freezer unit

We set up a wireless video camera tied to a DVR. We watched the playback and zoomed in on the heads during the defrost cycle and could see the small ice chunks flying off the coils and hitting the bulb. After we changed the heads it never happened again. I also thought it was the heat from the

Re: Sprinkler above freezer unit

How did you figure that out? Sent using CloudMagic Email [https://cloudmagic.com/k/d/mailapp?ct=pi=7.4.8=9.2.1=email_footer_2] On Tue, Aug 2, 2016 at 12:34 PM, tcfire wrote: I had a similar situation in a beestorage warehouse in Orlando. Turns out thar during the

Re: Sprinkler above freezer unit

I had a similar situation in a beestorage warehouse in Orlando. Turns out thar during the defrost cycle small bits of ice were hitting the glass bulb. The solution was to use fuseable link heads. Sent from my Sprint Samsung Galaxy S7. Original message From: Brad Casterline

RE: Stage Calc Hose Allowance

Reed- Yes, the total inside + outside hose allowance = 250. Brian Harris, CET BVS Systems Inc. bvssytemsinc.com From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Reed A. Roisum, SET Sent: Tuesday, August 02, 2016 11:31 AM To:

Stage Calc Hose Allowance

When taking the IBC exception for the required Class III wet standpipe on a stage of 1000+ sq ft and installing the 1 ½" hose connection in accordance with NFPA 13, do you include an additional hose allowance on the sprinkler calc? Stage is OH2 so I have a 250 gpm hose stream requirement

re: High Rise Class II testing

Am I missing something? 80+ story High Rise without sprinkler protection? From: "Versoi, Michael" Sent: Tuesday, August 02, 2016 8:59 AM To: "sprinklerforum@lists.firesprinkler.org"

Re: C-factor for stainless steel

Brad, I might have suggested he contact one of the manufacturer's or the NRTL's to find out if there had been any testing done with the deflector any closer than 1" from the deck or framing above. That would seem to make more sense to me. Some of the early classes I took on sprinkler

High Rise Class II testing

A colleague has posed a question regarding proper testing of waterflow devices in a 80+ story High Rise in Chicago. At a certain point in the building, the systems installed reduce to a Class II standpipe only. The waterflow devices in the building have, in the past, been tested with several