Note Roland states "Could": Depending on circumstances [and how knowledgeable the AHJ is in hydraulics], you may need to submit both a 1 head and a multi-head calculation to prove to the AHJ what is the most demanding.
David W. S. Blackwell, II, PE, CFI-I, CFPE Engineering ---------------------------------------------------------------- Office of State Fire Marshal 141 Monticello Trail Columbia, SC 29203 Phone: 803.896.9833 Fax: 803.896.9806 Email: [email protected] OSFM Website: http://www.llr.state.sc.us/firemarshal.asp ---------------------------------------------------------------- -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Roland Huggins Sent: Friday, May 28, 2010 3:17 PM To: [email protected] Subject: Re: How Many Heads to calc for 13D & 13R 13D says ALL sprinklers in the compartment UP to a maximum of two sprinklers. 13R says the same but up to a maximum of four. So it could be a single sprinkler calculation for either. Roland On May 28, 2010, at 11:39 AM, Richardson, R wrote: > I had always thought that both NFPA 13R and 13D required a minimum > two head calculation. > > For various reasons we were actually reading it today and notice > that there does not appear to be a minimum number of heads to calc, > just calc. how many heads are in a compartment. > > We have an apartment whose units have 1 head per compartment, is it > acceptable to do a 1 head calc for 13R? > > Thanks, > > Rich Richardson > Seattle Fire Department > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
