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#154486 - 12/26/05 01:03 PM Sprinklers in 1&2 family?  
gfretwell  Online Content

Joined: Jul 2004
Posts: 9,124
NFPA just added a sprinkler requirement to NFPA 101 for 1&2 family (new construction).
Thoughts? Do you think your AHJ will adopt this rule? That would be the only metal pipe iun a house around here, assuming they won't let them use PVC. I usually think of black iron when I think of sprinklers.

Greg Fretwell

Building Codes & Related References

#154487 - 12/26/05 02:07 PM Re: Sprinklers in 1&2 family?  
iwire  Offline
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Greg there is a Town within 5 miles of me that passed a local ordnance that all newly constructed buildings will be sprinkled.

The single family residential systems use a plastic type pipe.

It is hard to argue against it as sprinklers do without question save lives and property.

Bob Badger
Construction & Maintenance Electrician

#154488 - 12/26/05 02:17 PM Re: Sprinklers in 1&2 family?  
iwire  Offline
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA

Bob Badger
Construction & Maintenance Electrician

#154489 - 12/26/05 10:16 PM Re: Sprinklers in 1&2 family?  
gfretwell  Online Content

Joined: Jul 2004
Posts: 9,124
I find the plastic interesting. I put sprinklers in my house in Md because it had some obvious fire traps. I ended up with 4 heads in the garage, 2 in the split level foyer 2 in the utility room under that and 1 in the hall outside the utility.
Folks (including the insurance company) beat me up because I ran everything in 3/4" copper. They said it should be black iron.

I guess that thinking has changed.

Do they just use garden variety CPVC?

In my house I have a well. Can I call this a firepump ;-)

Greg Fretwell

#154490 - 12/26/05 10:55 PM Re: Sprinklers in 1&2 family?  
Ron  Offline
Joined: Mar 2002
Posts: 582
White Plains, NY
I think the CPVC that is used for residential sprinkler is compliant with NFPA 13R or D.


#154491 - 12/27/05 09:54 AM Re: Sprinklers in 1&2 family?  
Ryan_J  Offline
Joined: Aug 2003
Posts: 1,374
West Jordan, Utah, USA
Moist people do not adopt the NFPA 101. There is a rule in the IBC that requires multifamily dwellings to be sprinklered, but it does not apply to single or two family. There were proposals for this, but they were rejected.

Ryan Jackson,
Salt Lake City

#154492 - 12/27/05 10:59 AM Re: Sprinklers in 1&2 family?  
renosteinke  Offline
Cat Servant
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
Sprinkler systems once were rather involved systems, seemingly designed for perfection, rather than as a bare minimum for safety. Some argued, with great success, that they were aimed at protecting property rather than lives.

This all changed when a separate code was written for dwellings. This greatly simplified standard made household sprinklers practical.
In NFPA 13D, the requirements for alarms, fire pumps, reservoirs, etc., are greatly simplified. Many things you "assume" are required are not required for dwellings.

And not a moment too soon; the homes of today are nearly twice as large as the homes we grew up in. Our posessions- the things that do most of the burning- have increased exponentially. Long gone is the day when a family can put all their belongings into a push-cart!

I cannot speak to the use of copper pipe; I do know that plastic is allowed. I also cannot say whether the sprinkler code allows for "normal" plumbing to be used; in industrial settings, it is required that specially rated pipe be used.

Yet- assuming there is no legal requirement for any sprinkler system at all- I applaud any attempt to increase protection. Any system is better than none, and most fires are controlled with the tripping of only a head or two.

#154493 - 12/29/05 06:46 AM Re: Sprinklers in 1&2 family?  
iwire  Offline
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
As a side to this I work at a facility that test sprinkler heads before approval.

I was lucky enough to watch them start a 15' x 15' x 1' deep 'pan' of ester (sp?) on fire to demonstrate the effectiveness of the sprinkler heads.

The building they do this in has a 65' inside height and the control room commentator reported that the flames where reaching 45' at 2 minutes in.

By 5 minutes into the test about 25 sprinkler heads where open creating quite a rainfall.

At 8 minutes the flames where close to out but the pan was also close to overflowing with water at that point so a air horn sounded signaling their in house firefighters to snuff the rest with foam.

But even still the effectiveness of the sprinkles could not be argued. [Linked Image]

Fires cool when it is under control. [Linked Image]

Bob Badger
Construction & Maintenance Electrician

#154494 - 12/30/05 10:28 AM Re: Sprinklers in 1&2 family?  
kd  Offline
Joined: Dec 2004
Posts: 52
Does your insurance cover hooking up electrical to the sprinkler alarm system? Most policies exclude fire alarms. But is there an exception for residential systems???

#154495 - 01/07/06 12:34 AM Re: Sprinklers in 1&2 family?  
InspectorE  Offline
Joined: Oct 2004
Posts: 51
Hudson WI USA
Wirsbo makes PEX tubing and components for sprinkler systems. They don't require anywhere near the volume of water as a large commercial installation does and are still effective. It makes a lot of sense to have a sprinkler system installed, particularly in a new home.

Our new home will have a LOT of PEX tubing as we'll have radiant heat and the plumbing lines will also be PEX tubing. It's very easy to run, connection time is small, and it's better than dripping solder down your arm!

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