HomeMy WebLinkAboutWater Report WINN PROFESSIONAL ENGINEERS AND CONSTRUCTORS,LIC
Texas Registered Firm No. F-7846
WATER SYSTEM FIRE HYDRANT FLOW TEST REPORT
Date: 2/11/2015
Water System Owner: Wellborn SUD
Development Project: Jeremy Boyd Service
Flow Test Location: Fire Hydrant near 12318 N. Dowling Rd.,College Station,TX
Nozzle size (in.): 2.5 Discharge Coeff: (c) =0.90
Pitot Reading(psi): 60 Flowrate Formula: QF= 29.84cd2p1/2
c=discharge coeff.
Flowrate(gpm): 1,300 (from chart) d =orifice size (in.)
p= pitot pressure (psi)
Pressure Gauge Location: Hose bib on nearby house,4655 Rock Prairie Road, College Station
Static Pressure (psi): 71-72
Residual Pressure(psi): 63
Computed Discharge at 20 psi Residual Pressure(gpm): QR= 1,994
Discharge Formula: QR=QF(hr0.54/hf.54)
Note: The flow test and report were prepared in accordance with NFPA 291.
Testing Witnessed
and Recorded by: William R. Dierksen, P.E.
Report Prepared by: Walter T.Winn,Jr., P.E.
Others Present: Clendon Adams(Wellborn SUD)
Jonathan Provazek(Wellborn SUD)
WINN PROFESSIONAL ENGINEERS
Y a 4
r b : r s r AND
CONSTRUCTORS, LLC
February 16, 2015
via Email and US Mail
Mr. Stephen Cast
Wellborn Special Utility District
P.O. Box 250
Wellborn, Texas 77881
RE: Jeremy Boyd Fire Flow Test
Dear Stephen:
Our Mr. Will Dierksen, P.E. witnessed a fire hydrant flow test conducted by Wellborn
Special Utility District personnel, Clendon Adams and Jonathan Provazek. The results of
the testing are shown in the attached report prepared in accordance with NFPA 291.
Our calculations indicate that approximately 1,994 gpm should be available from the
hydrant when operated with a residual pressure of 20 psi.
We appreciate the opportunity to provide this information. Please do not hesitate to call
if you have any questions or comments.
Sincerely yours,
Winn Professional Engineers & Constructors, LLC
Texas Registered Firm No. F-7846
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