In the UK we commonly use conventional sprinklers (old style) for most applications and these are widely available from all of the major suppliers: Tyco, Viking, Reliable, etc. Conventional sprinklers are abbreviated to CU/P (conventional upright or pendant) and can be used in either orientation. From memory in the upright orientation the water distribution is approximately 40% up 60% down but spray heads are 80:20 (I'm sure someone will have exact details).
Regards, Spencer Allen On 29 Feb 2012, at 17:07, "Cahill, Christopher" <[email protected]> wrote: > I also meant to add sprinklers for structural fire protection need to be > carefully considered. One little shaft maybe not a big deal. You need to > compare the differences. Everything working correctly as designed, > sprinklers are better IMHO. But traditional structural protection is present > when the sprinklers are off for whatever reason. And we all know sprinklers > get turned off for both legitimate reasons plus the ooops, and deliberate > malicious acts. No one turns off spray on protection, yes they might chip > away at a small portion to hang something for example. I for one have never > been completely comfortable with sprinkler alternatives to rated components, > including window sprinklers. Now I'm talking about when a building requires > sprinklers and ratings. I'm all for trading off all the structural > requirements for sprinklers as we do in many small and low buildings. > > Chris Cahill, PE* > Senior Fire Protection Engineer, Aviation & Facilities Group > Burns & McDonnell > 8201 Norman Center Drive > Bloomington, MN 55437 > Phone: 952.656.3652 > Fax: 952.229.2923 > [email protected] > www.burnsmcd.com > > Proud to be one of FORTUNE's 100 Best Companies to Work For > *Registered in: MN > > > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Matt Grise > Sent: Wednesday, February 29, 2012 8:18 AM > To: '[email protected]' > Subject: old-style sprinkler applications? > > NFPA 13 2007 8.15.15.3 allows old style sprinklers "where construction > features or other special conditions require unique water distribution." > > Has anyone come across such a situation? > > For example: > I have a building where there is some structural steel passing through a > non-combustible, non-accessible, mechanical shaft (that was previously > un-sprinklered). For whatever reason, they feel like it will be extremely > difficult to get fire-proofing onto the steel, so the architect suggested > using old-style sprinklers to protect the roof structure and steel below > (since they spray up and down). It was my understanding that standard spray > sprinklers are used now specifically because they work better at protecting > the structure above them (and better at attacking the fire), but I wanted to > double check. Any thoughts? > > Thanks! > > Matt Grisé PE*, LEED AP > Sales Engineer > Alliance Fire Protection > 130 w 9th Ave. > North Kansas City, MO 64116 > > *Licensed in KS & MO > > 913.888.0647 ph > 913.888.0618 f > 913.927.0222 cell > www. AFPsprink.com > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20120229/0a96807c/attachment.html> > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
