Appendix 5_6 FIre Protection Hydrant Flow TEst.pdf
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Hydrant Flow Test Report
Project Name: Dahlgren B198
Project Location: Dahlgren, Virginia
Test Performed by: Mike Owens Date:
Representative of: Jacobs Engineering Time:
Witnessed by: Mark Shelton
Purpose: Determine available flow and pressure for fire suppression sprinkler systems
Notes: Height from gauge hydrant to building finished floor elevation: 0 feet
ID Outlet Size
Gauge Hydrant: 1-1-6 2.5
Flow Hydrant 1 (F1): 1-3-6 2.5
Coefficient Note: Hydrant outlet discharge coefficients shall be determined per NFPA 291 -
Outlet with flow tube (stream straightener): 0.95
Outlet smooth and rounded: 0.90
Outlet square and sharp: 0.80
Outlet square and projecting into barrel: 0.70
Static Pressure: (before test) 62 psig
Static Pressure: (after test) 62 psig
Residual Pressure: 56 psig
Pitot Reading Calculated Flow
Hydrant Flow Rate F1 27 psig 869 gpm
Total Flow: 869 gpm
Available Flow @ 20 psig: 2,485 gpm
Sketch of Location:
April 25, 2019
9:00 AM
(one hydrant flowing)
Outlet Coefficient
0.80
0.80
Jacobs Engineering Page 1 of 1
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