He was probably a Spark Vendor in a previous life-- hyper sensitive to electron flow meeting H2O flow
> On Sep 15, 2014, at 4:18 PM, "Steve Leyton" <[email protected]> > wrote: > > I'll probably get yelled at for being off topic, but Andy Rooney never said, > "Have you ever wondered why ...?" Andy Rooney would say, "Why is it that > ...?" As in, "Why is it that Roland Huggins shorts out every time someone > dredges up an old thread that he thought was dead and buried?" > > You're welcome America, > Charles Osgood > > > > > > > -----Original Message----- > From: Sprinklerforum [mailto:[email protected]] > On Behalf Of Damien Shannon > Sent: Monday, September 15, 2014 1:57 PM > To: [email protected] > Subject: Re: Water Velocity > > So purely along the lines of Andy Rooney's 'have you ever wondered why' :) > ... FM Datasheet 2-0, while not limiting the allowable velocity, does require > that when velocity exceed 30ft/sec, that the calculation be performed via the > Darcy-Weisbach Method rather than the Hazen-Williams. > Entertainment value only, but would seem that the variance between results in > Hazen-Williams versus Darcy-Weisbach become more apparent with higher > velocities. > The 30ft/sec limitation (for application of Hazen-Williams calculations) in > FM 2-0 is strangely close to the 10m/sec (32.8ft/sec) limitation in EN > 12845 Rules for Automatic Sprinkler Installations (previously BS 5306). > > > > > On 15 September 2014 21:23, Parsley Consulting <[email protected]> > wrote: > >> Roland, >> A mutual friend of ours who works up in Quincy described for me a >> question he once had with a caller who wanted to know in which edition >> of >> -13 the 32 ft/sec requirement had been removed, and why. >> This friend searched through the library there back to the first >> sprinkler standard from 1896, and found that it had NEVER been part of >> -13. The individual he was dealing with accused him of being an >> imbecile and a deceitful one to boot, and promptly hung up. >> Joe Hankins told me the same story. >> *Ken Wagoner, SET >> *Parsley Consulting*** >> *350 West 9th Avenue, Suite 206 >> *Escondido, California 92025 >> *****Phone 760-745-6181* >> Visit our website <http://www.parsleyconsulting.com/> *** On 9/15/2014 >> 1:01 PM, Roland Huggins wrote: >> >>> Next time you even start to think of any basis for imposing a >>> velocity of >>> 32 ft/s, take a hammer and smash a finger. Hopefully the pain will >>> divert you from wasting your time especially if you’re assuming you >>> are dealing with facts. I’ve heard numerous conclusion as to why the >>> mystical 32 ft/s existed. Only one has any chance of being valid. >>> Joe Hankins told me long ago that FM initially imposed a velocity >>> restriction after hydraulic calc’s entered the scene and folks >>> started designing gridded storage systems with >>> 1 inch BLs. For ever other basis, I can hear Andy Rooney saying - >>> Have you ever wondered why …... >>> >>> Roland >>> >>> >>> Roland Huggins, PE - VP Engineering >>> American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives >>> Dallas, TX >>> http://www.firesprinkler.org >>> >>> >>> >>> >>> >>> On Sep 12, 2014, at 5:51 AM, Brad Casterline >>> <[email protected]> >>> wrote: >>> >>> Damien, will you mail me those snaps too please? I have heard the >>> pipe >>>> schedules were derived by increasing the size when the velocity >>>> reached about 32 ft/sec. Figuring out approximate flow per head and >>>> average densities, etc, will give me something to do as I sit at the >>>> kitchen table and drink beer tonight. Thanks. >>>> >>>> Good luck Jeremy! >>>> >>>> Brad >>> _______________________________________________ >>> 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 > > > > -- > > *Damien Shannon* > _______________________________________________ > 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 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
