As a 50+ year firefighter/fire engineer, the number that I would expect to see
on the standpipe signage if it is anything other than 150 psi, is the pressure
required at the FDC; in this case 178 psi. Both the pressure available from
the city and the pressure available from the engine's fire pump are variable,
so the fire engineer/pump operator sets the pressure based on the conditions
present at the time the FDC is being pumped, then varies it depending on the
information coming from the firefighters on the hose lines connected to the
standpipe. If the FDC only serves sprinkler systems, then the fire
engineer/pump operator will adjust the pressure to maintain the pressure
indicated on the FDC sign.
Regards,
Dwight HavensFire Protection Engineer & Retired Fire Code Official, but still a
volunteer Firefighter/Fire Engineer
On Friday, February 9, 2024 at 12:16:06 PM EST, Kevin Hall
<kh...@firesprinkler.org> wrote:
178
| |
| Kevin Hall, M.Eng., P.E., ET, CWBSP, PMSFPE |
| Sr. Manager, Engineering and Technical Services |
| American Fire Sprinkler Association |
| p: | 214-349-5971 |
| w: | firesprinkler.org |
| |
|
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On Fri, Feb 9, 2024 at 12:14 PM George Medina Jr. <los_amigos_b...@yahoo.com>
wrote:
If the required pressure at the FDC is 178 psi and the City pressure is 84
psi, do I subtract the 84 psi from the 178? or do I just put the 178 psi on
sign?
George Medina Jr.
Sr. Fire Sprinkler DesignerSINGLETON FIRE PROTECTION INC.
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