I believe they are better for structural protection because they put the fire out better than old style. No better structural fire protection than no fire. So it's not directly better structural protection. Keep an object wet and it won't fail. It takes surprisingly little water to keep something cool. Take a look at window sprinklers for example. Take a look at a firefighter wetting a propane tank or the neighbor's house during a fire. There are many stories of firefighters getting caught and putting the hose on themselves a survive unharmed.
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
