Jeff, Basically the 4 times rule is only good for obstructions up o 9" wide then, why not just make 36" the number and be done with it?
Brian Harris FDFP INC. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jeff Hewitt Sent: Monday, July 14, 2008 3:40 PM To: [email protected] Subject: Re: Sprinkler Pattern Obstructions Brian, NFPA 13, 2007 8.8.5.2.1.3 states..."the maximum clear distance required (for extended coverage UR/Pendent heads) shall be 36-in......" What needs to be clarified? This already is clarified from previous editions. I think it's pretty clear. 36-in. is the MAXIMUM, regardless of the actual 4 times dimension. Jeff Hewitt, PE, SET, SFPE (Professional Member) Corporate Engineer Bi-State Fire Protection Corporation 241 Hughes Lane St. Charles, MO 63301 636-946-0011 636-946-5172 (FAX) This e-mail and any attachments are CONFIDENTIAL and may be protected by one or more legal privileges. It is intended solely for the use of the addressee identified above. If you are not the intended recipient, any use, disclosure, copying or distribution of this e-mail is unauthorized. If you received this e-mail in error, please notify the sender immediately at the above captioned address. ----- Original Message ----- From: "Brian Harris" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, July 14, 2008 2:18 PM Subject: RE: Sprinkler Pattern Obstructions > Jeff, > That's the confusing part, how can 36" work when the book also says it > needs to be 96"? I think some clarifying in the next release may be in > order. > > > Brian Harris > FDFP INC. > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Jeff > Hewitt > Sent: Monday, July 14, 2008 2:51 PM > To: [email protected] > Subject: Re: Sprinkler Pattern Obstructions > > Brian, > > I believe it should be read to mean that the most/furthest away you > have to be is a maximum of 36-in. The 36-in. is the maximum limit. > Without this provision, you would instead need to be 4 times away or > 96-in. > > > Jeff Hewitt, PE, SET, SFPE (Professional Member) Corporate Engineer > Bi-State Fire Protection Corporation > 241 Hughes Lane > St. Charles, MO 63301 > 636-946-0011 > 636-946-5172 (FAX) > > This e-mail and any attachments are CONFIDENTIAL and may be protected > by one or more legal privileges. It is intended solely for the use of > the addressee identified above. If you are not the intended > recipient, any use, disclosure, copying or distribution of this e-mail > is unauthorized. If you received this e-mail in error, please notify > the sender immediately at the above captioned address. > ----- Original Message ----- > From: "Brian Harris" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Monday, July 14, 2008 1:36 PM > Subject: Sprinkler Pattern Obstructions > > >> Forum, >> I know I must be reading this wrong but as usual I am in a hurry and >> could use some help. NFPA-13 (2007) 8.8.5.2.1.3 states that the >> sprinkler shall be positioned a minimum of 4 times the maximum >> dimension of the obstruction, but then it goes on to say a maximum of >> 36" clear space. In my case I have a 24" column I'm trying to avoid >> which by the 4 times rule would get me 8' >> away, how does the max. 36" clear come into play? Also look at Figure >> 8.8.5.2.1.3, I'm so confused ........ >> >> >> Regards, >> >> >> <http://www.firstdefensefire.com/> >> >> >> >> >> >> >> >> >> E-mail message checked by Spyware Doctor (6.0.0.354) Database version: >> 5.10250e http://www.pctools.com/en/spyware-doctor-antivirus/ >> > > > ---------------------------------------------------------------------- > ------ > ---- > > >> _______________________________________________ >> 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) > > > > > > E-mail message checked by Spyware Doctor (6.0.0.354) Database version: > 5.10250e http://www.pctools.com/en/spyware-doctor-antivirus/ > > > > > > E-mail message checked by Spyware Doctor (6.0.0.354) Database version: > 5.10250e http://www.pctools.com/en/spyware-doctor-antivirus/ > _______________________________________________ > 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) E-mail message checked by Spyware Doctor (6.0.0.354) Database version: 5.10250e http://www.pctools.com/en/spyware-doctor-antivirus/ E-mail message checked by Spyware Doctor (6.0.0.354) Database version: 5.10250e http://www.pctools.com/en/spyware-doctor-antivirus/ _______________________________________________ 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)
