RE: SxL rule
Roland, So what you are trying to tell me so delicately is that I was wrong and my sprinkler is over spaced according to rules. I really appreciate this forum for all the guidance it provides. Dewayne -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Roland Huggins Sent: Friday, May 09, 2008 3:25 PM To: sprinklerforum@firesprinkler.org Subject: Re: SxL rule The starting point is the explicit guidance that addresses the last sprinkler or branch line against a wall. You apply the longest dimension from either side for both S and L. This places the sprinkler in the center of the imaginary rectangle. The same philosophy applies to non-symmetrical layouts within the system. Yep there is a lot of overlap but it provides a consistent methodology. Roland On May 9, 2008, at 5:30 AM, Dewayne Martinez wrote: I have recently had a disagreement with a AHJ on how to determine the protection area of coverage for a sprinkler. In my situation, we have an OH II area which has extended coverage sprinklers (14x14) and one standard throw sprinkler. The distance between the extended and standard sprinkler is 12 ft. I was taught that since we are proving the EC sprinkler at 14x14, you would take 7ft off the distance between the sprinklers and use 5ft as the one of distances (x2=10ft) to determine the area of coverage for the standard sprinkler. He states that per NFPA, you would use the distance between the sprinklers (ie:12ft). We are going 13ft between sprinklers the other dimension so using my way we are at 130sq ft but his way we are 156sq ft. Which way is right? Thanks, Dewayne ___ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org 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 Sprinklerforum@firesprinkler.org 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 Sprinklerforum@firesprinkler.org http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
Re: SxL rule
Being in the center of your rectangle (sounds like new wave psych- babble) does not necessarily mean splitting the difference. It gets more confused with different types of sprinklers especially since it is NOT defined by 13. I too would count the boundary as the 7 ft mark from the EC. The distance on the other side of the standard sprinkler is the driving variable. Is it more than 2-1/2 ft from a wall OR 10 ft to the next standard sprinkler along that line. If it is not, the 5 ft dimension toward the EC is the larger variable, the sprinkler is in the center of its rectangle, and the world is good. Roland On May 12, 2008, at 4:37 AM, Dewayne Martinez wrote: Roland, So what you are trying to tell me so delicately is that I was wrong and my sprinkler is over spaced according to rules. I really appreciate this forum for all the guidance it provides. Dewayne -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Roland Huggins Sent: Friday, May 09, 2008 3:25 PM To: sprinklerforum@firesprinkler.org Subject: Re: SxL rule The starting point is the explicit guidance that addresses the last sprinkler or branch line against a wall. You apply the longest dimension from either side for both S and L. This places the sprinkler in the center of the imaginary rectangle. The same philosophy applies to non-symmetrical layouts within the system. Yep there is a lot of overlap but it provides a consistent methodology. Roland ___ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
SxL rule
I have recently had a disagreement with a AHJ on how to determine the protection area of coverage for a sprinkler. In my situation, we have an OH II area which has extended coverage sprinklers (14x14) and one standard throw sprinkler. The distance between the extended and standard sprinkler is 12 ft. I was taught that since we are proving the EC sprinkler at 14x14, you would take 7ft off the distance between the sprinklers and use 5ft as the one of distances (x2=10ft) to determine the area of coverage for the standard sprinkler. He states that per NFPA, you would use the distance between the sprinklers (ie:12ft). We are going 13ft between sprinklers the other dimension so using my way we are at 130sq ft but his way we are 156sq ft. Which way is right? Thanks, Dewayne ___ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
Re: SxL rule
The starting point is the explicit guidance that addresses the last sprinkler or branch line against a wall. You apply the longest dimension from either side for both S and L. This places the sprinkler in the center of the imaginary rectangle. The same philosophy applies to non-symmetrical layouts within the system. Yep there is a lot of overlap but it provides a consistent methodology. Roland On May 9, 2008, at 5:30 AM, Dewayne Martinez wrote: I have recently had a disagreement with a AHJ on how to determine the protection area of coverage for a sprinkler. In my situation, we have an OH II area which has extended coverage sprinklers (14x14) and one standard throw sprinkler. The distance between the extended and standard sprinkler is 12 ft. I was taught that since we are proving the EC sprinkler at 14x14, you would take 7ft off the distance between the sprinklers and use 5ft as the one of distances (x2=10ft) to determine the area of coverage for the standard sprinkler. He states that per NFPA, you would use the distance between the sprinklers (ie:12ft). We are going 13ft between sprinklers the other dimension so using my way we are at 130sq ft but his way we are 156sq ft. Which way is right? Thanks, Dewayne ___ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org 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 Sprinklerforum@firesprinkler.org http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
