Roland, Thom, Chris, John and others, Thank you very much for the informative and always helpful feedback on my posting.
Have a great weekend, Steve -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Roland Huggins Sent: Thursday, July 12, 2007 6:52 PM To: [email protected] Subject: Re: Non Plenum-Rated Cable in Non-Combustible Ceiling I haven't looked at the new UFC from DOD but back in my day, light hazard was not allowed. IF that is still the case, it would kill using CPVC Roland On Jul 12, 2007, at 3:21 PM, Christopher Born wrote: > I was involved in a similar situation when I was a PM/estimator for > a sprinkler contractor. 250K square foot of Navy facility that had > been steadily added on to over the years, with an unbelievable > amount of cable above the ceilings. > > There was so much cable that I don't think they even bothered to > troubleshoot (if they even could); they'd just run new cable. > There was one location that there were cable trays stacked on top > of each other. > > On this project, the bid documents clearly identified a requirement > to sprinkler above the ceiling. Given the cabling, I think this > was an appropriate decision. > > I would be careful about the use of CPVC on DOD work. Typically, > it's a very hard sell (as are most things that have been introduced > in the last 50 years with the Navy ... Oops did I say that LOL). I > believe that the latest UFC 3-600-01 (or is it 3-600-10N) only > allows it for 13R systems. > > In any event, good luck with what is sure to be a challenging project. > > Christopher Born, P.E. > Director, Fire Protection Engineering > Clark Nexsen > Norfolk, VA > ----- Original Message ----- From: "Steve Kowkabany" > <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Thursday, July 12, 2007 12:07 PM > Subject: Non Plenum-Rated Cable in Non-Combustible Ceiling > > >> I have an odd situation on a military job I am doing right now >> where we are >> adding sprinkler protection to 100,000 sqft of office space in a 3- >> story >> building that has been built in three phases over the past 25 >> years of >> non-combustible construction. We are planning on using CPVC >> piping for this >> application to hopefully make the retrofit less labor intensive. >> That's all >> pretty straightforward but the problem arises from the fact that >> the base >> communication department has been steadily adding lots of non- >> plenum rated >> cable on top of the drop ceiling into a non-combustible return plenum >> ceiling space above the first and second floors. The space above the >> ceiling varies in depth from 4-5 feet with 16" deep fire proofed >> steel >> joists spaced 3'-9" OC in some areas and 7'-6" OC in other parts. >> As a >> result, the military has recognized the life safety risk of this >> and allows >> two options per the latest UFC-3-600-1, which are to either >> replace all of >> the illegal cable over 5 years (impossible for us) or sprinkler >> above the >> ceiling. So we are adding sprinklers above the ceiling. I'm a >> little >> confused on a couple of things, and hope to get some guidance from >> anyone >> who has run into similar situations: >> >> >> >> 1) Can you typically still assume the ceiling space is non- >> combustible >> and use CPVC piping if there is some non-plenum rated cabling in >> there? >> >> 2) What is the best approach for sprinklering a ceiling space >> this deep >> - standard K5.6 brass uprights spaced at a normal light hazard 225 >> sqft/head? >> >> >> >> Thank you very much in advance for any thoughts on this, >> >> >> >> Steve Kowkabany, P.E. >> >> Fire Protection Engineer >> >> Neptune Fire Protection Engineering LLC >> >> 216 Seagate Avenue Unit B >> >> Neptune Beach, FL 32266 >> >> 904-652-4200 Phone >> >> 904-212-0868 Fax >> >> >> >> >> >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum >> >> To Unsubscribe, send an email to:Sprinklerforum- >> [EMAIL PROTECTED] >> (Put the word unsubscribe in the subject field) > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:Sprinklerforum- > [EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
