Maybe. The two areas are actually close to each other, so what we'd have to do is potentially drain half way down, then rise up and drain at the valve. We've been kicking this around and surfed the AHJ's website, and they haven't documented their previously expressed resistance to an auxiliary system. So we are inclined to find a location for a dry-pipe riser closer to the protected areas and just drop it there. If they come back and ask for a common riser room for the wets and the dry, we'll ask 'em to cite code or policy bulleting and dig in.
Steve -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of John Lewis Sent: Thursday, August 01, 2013 2:10 PM To: [email protected] Subject: Re: Heat trace question Steve, Can you split the difference and put a drum drip at the other end? 1/4" per 10' of main = 2 1/2" in 100' Thanks, J. Lewis >________________________________ > From: Steve Leyton <[email protected]> >To: [email protected] >Sent: Thursday, August 1, 2013 12:15 PM >Subject: RE: Heat trace question > > >These are two isolated areas at a hospital - one over some outdoor >seating at the dining common and the other a canopy that covers trash >enclosures and a couple of service enclosures. Both are a couple >hundred feet from the service entry and if we built a dry riser there, >we don't have enough room to slope the long run of main to the >protected spaces. The AHJ is one of those state agencies that has ><ahem> interpreted the standard liberally, and they don't want any dry >system that may be downstream of the riser room no matter how it's >configured, so I'm thinking that trace may be an alternative to the >auxiliary drainage and maintenance issues associated with dry-pipe in >this particular application. > >Steve > > > > >-----Original Message----- >From: [email protected] >[mailto:[email protected]] On Behalf Of >Bobby Gillett >Sent: Thursday, August 01, 2013 12:03 PM >To: [email protected] >Subject: Re: Heat trace question > >Steve, > >I had priced a system about two years ago and learned a lot. I found >the Tyco Raychem system was the best for my scenario; a lot of factors >go in to it - depends on size of piping and length, how much (if any) >insulation will be used, temperatures, and don't forget it has to be >listed for FP and supervised per NFPA 13. We had a local Tyco >distributor work up the pricing >- we gave him our plans and he took it off and priced it. I'm glad he >did. >I would have missed a lot - this was a big system in a 100'-0+ tower >w/standpipes etc.. It ended up needing two panels for supervisory due >to the length of the cables, etc. > >Bobby > > >On Thu, Aug 1, 2013 at 1:53 PM, Steve Leyton ><[email protected]>wrote: > >> Help a warm weather brother out please, with recommendations for heat >> trace systems. Price, reliability, branch line listings? >> >> >> >> Steve Leyton >> >> PROTECTION DESIGN & CONSULTING >> >> 2851 Camino del Rio South, Suite 400 >> >> San Diego, CA 92108 >> >> ------------------------------------------------------------- >> >> Ph: 858.751.2930 - ext. 102 >> >> Fax: 858.751.2933 >> >> Cell: 619.972.5696 >> >> >> >> >> >> >> >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprink >> l >> er.org >> > > > >-- >Bobby Gillett >*Living Water Fire Protection, LLC* >1160 McKenzie Rd. >Cantonment, FL 32533 >(850) 937-1850 >livingwaterfp.com <http://livingwaterfp.com/> >_______________________________________________ >Sprinklerforum mailing list >[email protected] >http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkle >r >.org >_______________________________________________ >Sprinklerforum mailing list >[email protected] >http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkle >r.org > > > _______________________________________________ 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
