RE: Captive Aire Systems

2019-08-15 Thread Matthew J Willis via Sprinklerforum
The purpose of a “hood” in this application is to direct and capture grease laden stuff… Re: NFPA 96. R/ Matt Matthew J. Willis, CWBSP Design Manager /3-D Specialist Rapid Fire Protection Inc. 1530 Samco Road Rapid City, SD 57702 Office-605.348.2342 Direct

RE: Captive Aire Systems

2019-08-15 Thread Jonathan Mote via Sprinklerforum
Those hoods meet the definition of a draft curtain, added in 2013 edition, I would think they could be considered independently of the regular system. Jonathan Mote, WBSL NICET II From: Sprinklerforum On Behalf Of Travis Mack, SET, CFPS, CWBSP, RME-G via Sprinklerforum Sent: Wednesday, August

RE: Attic/Concealed space access to sprinkler heads

2019-08-15 Thread Scott Futrell via Sprinklerforum
David, Interesting question. You haven't provided enough information for a thorough answer. How big of an attic area? So you intend to mark the location of every upright sprinkler in the concealed space on the ceiling below? No one will ever paint that gypsum? Then cut access for NFPA 25

RE: Attic/Concealed space access to sprinkler heads

2019-08-15 Thread David Williams via Sprinklerforum
Language camp facility. Rural area. Installing a underground water storage tank with vertical turbine pump. Originally we were to provide partial sprinkling of just the dining hall not sure if that meant the attic above it or not. The Fire Marshal and others convinced them to provide complete

RE: [EXTERNAL] Re: Captive Aire Systems

2019-08-15 Thread Nicky Marshall via Sprinklerforum
In New Zealand, we frequently connect them to a sprinkler system as the installation of an approved ‘restaurant system’ permits sprinklers to be omitted from ducts and hoods in our standard. We do not allow a cumulative demand. Although our standard does not explicitly state what you should

RE: [EXTERNAL] Re: Captive Aire Systems

2019-08-15 Thread Russell Gregory via Sprinklerforum
Further to Nicky’s comments I would add that the systems installed as tail end to fire sprinklers do not have the hood washing feature that the Captive Air appear to have. Pressure reducing is needed in some cases. Russell Gregory Christchurch; New Zealand From: Sprinklerforum

RE: Attic/Concealed space access to sprinkler heads

2019-08-15 Thread Bob Knight via Sprinklerforum
NFPA 25 does not require the inspection of sprinklers in concealed spaces, so that should not be an issue. Thank you, Bob Knight, CET III Fire by Knight, LLC 208-318-3057 From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of David Williams via

Re: Attic/Concealed space access to sprinkler heads

2019-08-15 Thread Travis Mack via Sprinklerforum
What is your attic slope? Is <2:12 then you need specially listed sprinklers for the areas <36” deep. Travis Mack, CFPS, CWBSP, RME-G, SET 480-505-9271 MFP Design, LLC www.mfpdesign,com Send large files to MFP Design via: https://www.hightail.com/u/MFPDesign Sent from my iPhone > On Aug 15,

RE: Attic/Concealed space access to sprinkler heads

2019-08-15 Thread David Williams via Sprinklerforum
Nope I think 6/12 top surface 4/12 lower.. David T Williams – Lead MEP/FP Engineer LHB, Inc. | PERFORMANCE DRIVEN DESIGN. From: Travis Mack Sent: Thursday, August 15, 2019 2:40 PM To: sprinklerforum@lists.firesprinkler.org Cc: b...@firebyknight.com; David Williams Subject: Re: Attic/Concealed

Re: Captive Aire Systems

2019-08-15 Thread Travis Mack via Sprinklerforum
I’ve run into these on multiple projects. They go by the name Captive Aire, Core and Pirhana. They have a pressure demand of 32-70 psi and a flow rate of about 40 gpm depending on the number of nozzles. We see these in Marriott properties often. They can be off domestic or fire as I see it.

Re: Attic/Concealed space access to sprinkler heads

2019-08-15 Thread Ron Greenman via Sprinklerforum
I didn't mean to suggest that you didn't need access to low points. You do, and you need to put the sign on them or next to them, but you also need to note where they are on the general info sign. Too many low points drain get lost in the insulation. I think it was Bob that said inspections per 25

RE: Attic/Concealed space access to sprinkler heads

2019-08-15 Thread David Williams via Sprinklerforum
I think I got that, but as we are the dreaded engineers and not installers so good or bad we rely on the installers to get the signs right. I do like to make sure we are creating a document that reflects feasibility of construction and maintenance. In this case we will have good access to the

RE: Captive Aire Systems

2019-08-15 Thread David Williams via Sprinklerforum
At least one of the Twin Cities local jurisdictions want to see these system or fire protection sprinklers installed in all kitchen hoods. The Fire Marshall want to have protection even when the agent has been expended (such as an agent only system). (they also want sprinklers to back up clean

Re: Attic/Concealed space access to sprinkler heads

2019-08-15 Thread Bruce Verhei via Sprinklerforum
What Ron said. Some poor fitter out in Oct looking for low points and on a schedule Best. > On Aug 15, 2019, at 12:55, Ron Greenman via Sprinklerforum > wrote: > > I didn't mean to suggest that you didn't need access to low points. You do, > and you need to put the sign on them or next

Attic/Concealed space access to sprinkler heads

2019-08-15 Thread David Williams via Sprinklerforum
I have a project intended to be fully sprinkled with a combustible attic that tapers from 2' to 4 ' without being filled to within 2 inches of the deck with insulation. So I am planning on a dry pipe system with standard heads as the design of the attic does not allow the effective use of

Re: Attic/Concealed space access to sprinkler heads

2019-08-15 Thread Ron Greenman via Sprinklerforum
Do note that NFPA 13 requires that the locations of low point drains be identified on the "General Information Sign" as well as the drain itself. Ron Greenman rongreen...@gmail.com 253.576.9700 The Universe is monstrously indifferent to the presence of man. -Werner Herzog, screenwriter, film

RE: Captive Aire Systems

2019-08-15 Thread Matthew J Willis via Sprinklerforum
T, You said “Piranha”. These normally connect to potable and or have water tank in addition to the Wet Agent. Your description sounded more like the Core which is continuous water supply for fire suppression AND wash down that have losses equated for connection to fire sprinkler? Same? R/

RE: [EXTERNAL] Re: Captive Aire Systems

2019-08-15 Thread Kyle.Montgomery via Sprinklerforum
Travis, In a roundabout way, that sort of answers your question. If they aren’t allowed to connect to domestic fixtures that may be operating at the same time, then it stands to reason that they shouldn’t connect to sprinkler systems that are operating at the same time. Ergo, if they are

Allied XL pipe - tech data

2019-08-15 Thread Steve Leyton via Sprinklerforum
If anyone has an XL data sheet (I only need dimensions at this moment, not the friction loss tables) that is already or can be scanned, please send to me off-forum and I will be eternally grateful (or until next Friday). Thanks, [cid:image003.jpg@01D5536F.9D581B50]

Re: Captive Aire Systems

2019-08-15 Thread Ron Greenman via Sprinklerforum
Travis, Like Bruce, I may be a few years out of date also but I've never seen one of these connected to a sprinkler system. They are for a special hazard and so independent of the life safety and building protection definition for a sprinkler system. These are designed to smother the fire with

RE: Attic/Concealed space access to sprinkler heads

2019-08-15 Thread David Williams via Sprinklerforum
Thanks.. I didn't see it either but I wanted to see if there were other opinions/options. David T Williams - Lead MEP/FP Engineer LHB, Inc. | PERFORMANCE DRIVEN DESIGN. From: Sprinklerforum On Behalf Of Bob Knight via Sprinklerforum Sent: Thursday, August 15, 2019 1:59 PM To:

RE: [EXTERNAL] Re: Captive Aire Systems

2019-08-15 Thread Travis Mack, SET, CFPS, CWBSP, RME-G via Sprinklerforum
I was told that they can’t have the connections to toilets or sinks upstream because it could take water away from the system when needed. But, in this case they finally came back and just took it from the domestic. So I won’t worry about it until the next one comes up.

Got it

2019-08-15 Thread Steve Leyton via Sprinklerforum
Thanks to those who have already sent tech data. [cid:image003.jpg@01D55372.D62BA7A0] ___ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org