Reaming of pipe

What is the forum consensus on why threaded sprinkler piping is reamed. I always did it as a fitter. We have always required it in our specifications. I have never really thought about the ‘why’ though. Is it as simple as removing the burr created when the pipe is cut and any potential

RE: Building Heights Requiring Standpipes

If you are using electric flow switches most of them have a built in retard feature (or time delay) witch allow the flow switch to absorb a pressure surge with out activating the alarms. This was meant to replace the old fashioned Retard Chamber used in conjunction with Alarm Valves. Regards, G.

RE: Building Heights Requiring Standpipes

Cesar, I believe that this is only required for alarm check valves. Does your system have one? If not the retard device should not be required. Thank you, Bob Knight, CET III 208-318-3057 -Original Message- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org]

RE: Building Heights Requiring Standpipes

Hi. I have a doubt. NFPA13 request that all sprinklers system shall have a Retarding device. But in our sprinkler systems installed we are not using it. Because we have a water flow sensor above check alarm instead of an alarm pressure switch or water motor alarm. Is it correct as I have it?.

RE: [EXTERNAL] RE: Hot Tubs/Spa storage

And where there are spas, would there not be foam-filled vinyl covers? From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Prahl, Craig/GVL Sent: Thursday, August 09, 2018 10:41 AM To: sprinklerforum@lists.firesprinkler.org Subject: RE: [EXTERNAL] RE: Hot

RE: [EXTERNAL] RE: Hot Tubs/Spa storage

You can find them shrink-wrapped, boxed or crated. Just depends on the manufacturer and sometimes size of the unit. Craig Prahl | Jacobs | Group Lead – Fire Protection | 864.676.5252 | craig.pr...@jacobs.com | www.jacobs.com From: Sprinklerforum On Behalf Of Nick

RE: Hot Tubs/Spa storage

Would they be encapsulated or does the spa itself become an open top container? Nick Maneen, SET c 704.791.7789 From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Steve Leyton Sent: Thursday, August 09, 2018 12:06 PM To:

RE: Hot Tubs/Spa storage

Hot tubs and spas are made from several different materials. Fiberglass, composite acrylic, vinyl, continuous cast acrylic. If you assume Group A plastic, you should be covered. Craig Prahl | Jacobs | Group Lead – Fire Protection | 864.676.5252 | craig.pr...@jacobs.com |

RE: Building Heights Requiring Standpipes

2015 IBC [F] 905.3 Required installations. Standpipe systems shall be installed where required by Sections 905.3.1 through 905.3.8.Standpipe systems are allowed to be combined with automatic sprinkler systems. Exception: Standpipe systems are not required in Group R-3 occupancies. [F] 905.3.1

RE: Hot Tubs/Spa storage

Group A++ plastics. The cavity between the Trex (plastic) planked shell and the cast plastic tub is usually sprayed nearly full with expanded plastic foam. SML From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Fpdcdesign Sent: Thursday, August 09, 2018

Re: NFPA 13R - Garages - CPVC

What if we just designed everything for flammable liquid storage, that would be the ticket right? I'm getting ready to start answering the 'what ifs' with my own which is "What if the architect put the occupancy information on the cover page and the building owner actually followed that? Oh you

RE: Building Heights Requiring Standpipes

We had already walked through the IBC and all the pictures but he wants more solid info. I've reached out to the State Fire Marshal and they had agreed to write up an explanation. Like Steve explained, the access to the building and stairwells is at grade plane, which is first floor in this

Hot Tubs/Spa storage

I am looking at a place with hot tubs and spas (empty) stored 4 high. The exteriors area wood and the tubs are a reinforced plastic. Any experience or thoughts on commodity classification? I am looking into if they are using Trex or other artificial lumber on some of the exteriors.