13 pretty much ignores FDC's except to say they are magical connections that somehow allow the fire department to "supplement" pressure without adding flow.
Ron Fletcher Aero Automatic Phoenix, AZ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Todd Williams Sent: Wednesday, January 05, 2011 5:16 AM To: [email protected] Subject: Hanger spacing - 100 psi NFPA 13 (2002) section 9.2.3.4.3 discusses hanger spacing deviations for piping with maximum pressure exceeding 100 psi as being different from spacing with pressures less than that. If the fire department hooks up to the FDC with 150 psi pressure, would that be the valve used for determining the maximum pressure? If that is the case, when would the lesser value be used? Todd G. Williams, PE Fire Protection Design/Consulting Stonington, CT 860.535.2080 www.fpdc.com _______________________________________________ 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)
