Bob: I have always done it the way you described as well. If it is not too much trouble, you may want to do the calc his way, and take yours and show him which is most demanding. That way you could educate him so the issue never comes up again.
Good luck!! -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Matthew J. Willis Sent: Thursday, August 09, 2007 9:46 AM To: [email protected] Subject: RE: Design Area Rotation So not like a dry tree with two mains. I understand it the way you do. Meet 1500, not the 1.2. It would seem to enlarge you beyond 1500, which you compensate by dropping off sprinklers until you reach 1500 or there abouts. Not sure any more or less demand is proven. The text looks to me to ensure that if there is one main in the middle, you pass the main and pick up the extra sprinklers. Which would get the larger starter pieces on the opposite side, thereby creating the greater demand. 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 Bob Knight ----- >Sent: Thursday, August 09, 2007 11:38 AM ----- >To: [email protected] ----- >Subject: RE: Design Area Rotation ----- > ----- >Matt, ----- >Not in this case. The area would simply be stretched ----- >out sideways along the same cross main for a much ----- >greater distance. ----- > ----- >Bob ----- > ----- >-----Original Message----- ----- >From: [EMAIL PROTECTED] ----- >[mailto:[EMAIL PROTECTED] On ----- >Behalf Of Matthew J. ----- >Willis ----- >Sent: Thursday, August 09, 2007 10:29 AM ----- >To: [email protected] ----- >Subject: RE: Design Area Rotation ----- > ----- >That's the way I see it. Extending to 46 would mean ----- >going to the other cross main yes? ----- > ----- >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 Bob Knight ----- >----- >Sent: Thursday, August 09, 2007 11:23 AM ----- >----- >To: [email protected] ----- >----- >Subject: Design Area Rotation ----- >----- > ----- >----- >I have an AHJ who is telling me that I need to rotate my ----- >----- >design area length 90 degrees to account for there not ----- >----- >being enough sprinklers per line on the branches. This ----- >----- >would give me a design area that is perpendicular rather ----- >----- >then parallel per 14.4.4.1.11. Section 14.4.4.1.1.3 ----- >----- >states, "In systems having branch lines with an ----- >----- >insufficient number of sprinklers to fulfill the ----- >----- >1.2 requirement, the design area shall be extended to ----- >----- >include sprinklers on adjacent branch lines supplied by ----- >----- >the same cross main." I was taught, and therefore I ----- >----- >have always understood this to mean that in a situation ----- >----- >where there are not enough sprinklers per line you ----- >----- >include additional sprinklers up to the point that your ----- >----- >design are is fulfilled, i.e. add sprinklers until I ----- >----- >reach 1500 sf, not until I have created a perpendicular ----- >----- >area of 46 + ft. ----- >----- >Is this the same understanding that everyone else has? ----- >----- > ----- >----- >Thank you, ----- >----- > ----- >----- >Bob Knight, CET ----- >----- >(208) 495-2057 ----- >----- >[EMAIL PROTECTED] ----- >----- >www.firebyknight.com ----- >----- > ----- >----- > ----- >----- >No virus found in this outgoing message. ----- >----- >Checked by AVG Free Edition. ----- >----- >Version: 7.5.476 / Virus Database: 269.11.8/941 - ----- >----- >Release Date: 8/7/2007 ----- >----- >4:06 PM ----- >----- > ----- >----- > ----- >----- >_______________________________________________ ----- >----- >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) ----- > ----- >No virus found in this incoming message. ----- >Checked by AVG Free Edition. ----- >Version: 7.5.476 / Virus Database: 269.11.8/941 - ----- >Release Date: 8/7/2007 ----- >4:06 PM ----- > ----- > ----- >No virus found in this outgoing message. ----- >Checked by AVG Free Edition. ----- >Version: 7.5.476 / Virus Database: 269.11.8/941 - ----- >Release Date: 8/7/2007 ----- >4:06 PM ----- > ----- > ----- >_______________________________________________ ----- >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 2447 (20070809) 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)
