blockquote, div.yahoo_quoted { margin-left: 0 !important; border-left:1px
#715FFA solid !important; padding-left:1ex !important; background-color:white
!important; } REHAU Had a complete line of fittings for installation of PEX
fire sprinkler systems imbedded in concrete which is used in the UE.
It was used in systems beyond 13D. Check with them might be able to work
something out with them.
Mike C
Sent from Yahoo Mail for iPhone
On Friday, October 7, 2016, 11:25 AM, rongreenman . <[email protected]>
wrote:
Isn't PEX used as the piping in heated floors where you would have a large
change in temperature from winter (using it to halt the floor cum building, and
summer where you wouldn't?
On Fri, Oct 7, 2016 at 6:31 AM, Steve Leyton <[email protected]> wrote:
I think an investigation of the potential for thermal expansion would be
prudent. The applications I described topped with 3-8 feet of earth, so
temperatures were stable year-round. But PEX is designed to expand and
contract without loss of structural integrity, so it's well suited for
embedment in concrete.
Steve
-------- Original message --------From: Ben Young <[email protected]>
Date: 10/7/16 6:27 AM (GMT-08:00) To: sprinklerforum@lists. firesprinkler.org
Subject: Re: Monolithic domes
I thought about PEX as well Steve, its no four letter word for me. At least
with the CPVC we can comply with the pipe requirements from NFPA 13, which
would require less 'selling' than PEX use. Although as Mark points out about
thermal expansion, PEX does have a lower rate of I think about an inch per 100
feet. Because the concrete acts as a thermal sink and they are insulated on
the outside, I think the temperatures inside are incredibly stable. The
Wikipedia page for these things makes them sound incredibly attractive for
almost any building type, but there are some drawbacks.
I'm just really surprised at the complete and utter lack of information on
sprinklering these except for the one I posted.
Benjamin Young
On Thu, Oct 6, 2016 at 10:41 PM, Steve Leyton <[email protected]>
wrote:
Listed PEX A and I think the sprinklers were screwed right into the branch
fittings because we only needed 30 minutes per UL 1821. If you really need the
details, I have to look at my technical report and may not be able to do that
for a couple days as I'm taking a long weekend.
Wine caves are a little different than overhead domes because we ran a CPVC
main down the corridors under the floor and branched off with 1" PEX that
wrapped halfway around the vault serving a single sprinkler. The CPVC was
directly buried and the floors were made of hand-laid stone on a sand bed.
But I think you could drop to the sprinklers with CPVC or even use PEX because
I'm not as worried about protecting piping that has a sprinkler between it and
the heat source as I might be concerned about a piping span that's between
sprinklers.
Steve
-------- Original message --------From: AKS-Gmail-IMAP
<[email protected]>Date: 10/6/16 7:23 PM (GMT-08:00) To:
[email protected] kler.org Subject: Re: Monolithic domes
If I may ask, was that PEX A or B and how were the last bit of drop piping
handled where the sprinklers screwed in?
Allan SeidelSt. Louis, MO
On Oct 6, 2016, at 3:32 PM, Steve Leyton <[email protected]> wrote:
It’s a dirty word on this Forum to some, but I would consider looking into PEX
tubing if you can get it to work hydraulically. The challenges with PEX are
smaller ID and temp/pressure rating. However, PEX can easily be attached to
the formwork for concrete or Gunnite and we have used it with great success in
wine caves out here on the Left Side. Aggregate concrete has a fire
resistance rating that can be extrapolated as about 22.2 minutes per inch and
I’ve done tech reports for two wine cave applications where we obtained
equivalency approval for this application. Steve Leyton From:
Sprinklerforum [mailto:sprinklerforum-bounces @lists.firesprinkler.org] On
Behalf Of Maurice Marvi
Sent: Thursday, October 06, 2016 12:58 PM
To: [email protected] prinkler.org
Subject: re: Monolithic domes Repairing buried CPVC branch lines sounds like
fun. Not.
Maurice Marvi
From: "Ben Young" <[email protected]>
Sent: Thursday, October 06, 2016 3:18 PM
To: "[email protected] nkler.org" <[email protected]
nkler.org>
Subject: Monolithic domes
Does anyone have any information at all about putting sprinklers in a concrete
monolithic dome?
I was able to find one article about it at the monolithic dome institute's
website here:
http://static.monolithic.com/c onstruction/sprinklers/index.h tml
Looks crazy, but also interesting.
Benjamin Young ______________________________ _________________
Sprinklerforum mailing list
[email protected] kler.org
http://lists.firesprinkler.org /listinfo.cgi/sprinklerforum- firesprinkler.org
______________________________ _________________
Sprinklerforum mailing list
[email protected] kler.org
http://lists.firesprinkler.org /listinfo.cgi/sprinklerforum- firesprinkler.org
______________________________ _________________
Sprinklerforum mailing list
Sprinklerforum@lists. firesprinkler.org
http://lists.firesprinkler. org/listinfo.cgi/ sprinklerforum-firesprinkler. org
--
Ron Greenman
4110 Olson Dr., NW
Gig Harbor, WA 98335
[email protected]
253.576.9700
The Universe is monstrously indifferent to the presence of man. -Werner Herzog,
screenwriter, film director, author, actor and opera director (1942-)
_______________________________________________
Sprinklerforum mailing list
[email protected]
http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
_______________________________________________
Sprinklerforum mailing list
[email protected]
http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
