Yeah and hopefully the contractor who did the shell used 1" outlets instead of 1/2".
Craig L. Prahl, CET Fire Protection Group Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [EMAIL PROTECTED] http://www.lg.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Matthew J. Willis Sent: Thursday, February 07, 2008 3:39 PM To: [email protected] Subject: RE: Arm over Calculations Also, do not forget the tendency to catch 2 sprinklers from one outlet on tenant upfits. I have been know to prove 2 sprinklers from one outlet on the shell, and keep a copy in house, in anticipation of bidding/doing the upfit... R/ Matt Matthew J. Willis Living Water Fire Protection, LLC. 1160 McKenzie Rd. PO Box 877 Cantonment, FL. 32533 850-937-1850 Voice 850-937-1852 Facsimile [EMAIL PROTECTED] ----- >-----Original Message----- ----- >From: [EMAIL PROTECTED] ----- >[mailto:[EMAIL PROTECTED] On ----- >Behalf Of George Church ----- >Sent: Thursday, February 07, 2008 1:47 PM ----- >To: [email protected] ----- >Subject: RE: Arm over Calculations ----- > ----- >IF you did the original...... ----- > ----- >-----Original Message----- ----- >From: [EMAIL PROTECTED] ----- >[mailto:[EMAIL PROTECTED] On ----- >Behalf Of Travis Mack, SET ----- >Sent: Thursday, February 07, 2008 1:57 PM ----- >To: [email protected] ----- >Subject: RE: Arm over Calculations ----- > ----- >The typical scenario I see with this is where we have a ----- >shell office or retail space. The shell space is ----- >typically designed for 1500+ sq ft. Then, when you drop ----- >in a ceiling, you often have the QR reduction that comes ----- >into play for a reduced design area of 900 sq ft. Now, ----- >with the arm overs and such, I have not seen it throw ----- >off a calc when you are reducing the design area by 600 ----- >sq ft. I am not saying that it can't happen, but just ----- >that I have never seen it. However, if you did the ----- >shell with the QR reductions, then you may be at a point ----- >where the extra arm overs and such do create a problem ----- >for the calculated systems. ----- > ----- >Also, if you are using some of the newer calc programs, ----- >it is pretty simple to slap a remote area on the system ----- >and get it calc'd in a matter of a few minutes. You can ----- >then prove the point that it really is not an issue. ----- > ----- >Travis ----- > ----- >-----Original Message----- ----- >From: [EMAIL PROTECTED] ----- >[mailto:[EMAIL PROTECTED] On ----- >Behalf Of Joe Hankins ----- >Sent: Thursday, February 07, 2008 11:39 AM ----- >To: [email protected] ----- >Subject: Re: Arm over Calculations ----- > ----- >Regardless off what one's interpretation of NFPA 13 is, ----- >the inescapable fact is that adding arm overs (two ----- >elbows = 10+ feet of 1 in. pipe by ----- >themselves) will throw the original calculations ----- >significantly off. ----- > ----- >Joe ----- > ----- >Craig Rauch wrote: ----- >> My question is regarding an existing light hazard ----- >system. We are ----- >> currently ----- >using the 2002 NFPA 13. ----- >> ----- >> The system was calculated last year when this was a ----- >shell space as ----- >> light ----- >hazard. They are now fitting this space out, and have ----- >submitted plans showing a number of arm overs and some ----- >additional heads to accommodate the layout of the space. ----- >> ----- >> The question has now come up as to if we should ----- >require calculations. ----- >> ----- >> At what point would you say the calculations were ----- >needed for this type ----- >> of ----- >work? ----- >> _______________________________________________ ----- >> 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) ----- > ----- >__________ NOD32 2856 (20080207) Information __________ ----- > ----- >This message was checked by NOD32 antivirus system. ----- >http://www.eset.com ----- > ----- > ----- >_______________________________________________ ----- >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) _______________________________________________ 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)
