You can also calculate the approx "C" factor, first run a flow test, measure the friction loss use the Hazen-Williams formula which needs to be turned around so that the "variable "C" in the one being solved, there is as example in the NFSA Layout, Detail and Calculation of Fire Sprinkler Systems book
Tom Poisal, CET On Tue, Apr 20, 2010 at 6:12 PM, <[email protected]> wrote: > Can someone tell me were in NFPA-13 dose it talk about the C-Factor for > pipe. I am doing a calc. on an old system and I know I have to change the > C-Factor but I can not find it in the code book. I found it somewere elese > and it says in old pipe i must change the C-Factor like new black pipe for > wet systems will be 120 C-Factor but if its 50 years old I must chage it to > 90. Can someone tell me were to find this info. Thank You > > _______________________________________________ > 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]<to%[email protected]> > (Put the word unsubscribe in the subject field) > -- Tom Poisal, CET _______________________________________________ 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)
