HomeMy WebLinkAboutSDP202000030 Correspondence 2020-03-23 (4)AlbemaldeCounty � Hydrant Flow
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�'"'�"°'�'"'� `��'� Test Report
16S SpoYiep ROM Charlottesville. VA 22911 (Aadl 9"4511
Location
Date and Time of Test
Minutes of Flow
Pipe Size (Inches)
COLONNADE DR
3/5/2020 9:19:00 AM
3
10
Pressure Hydrant 10190
Static Pressure (psi) 64
Residual Pressure (psi) 55
1-1 Q20 Looped ❑ Q20 Multiple Inline Hydrants
Flow Hydrant #1 10191 Pitot Pressure #1 (psi)
Flow Hydrant #2 10192 Pitot Pressure #2 (psi)
Flow Hydrant #3 Pitot Pressure #3 (psi)
Date of Report
3/5/2020
fVI Q20 Single Flow ❑ Sprinkler Test Single Flow
Total Estimated Flow (gpm) 1560
AWWA Q20 Calculation (gpm)
(No value in 0.20 indicates insufficient pressure drop for Q20 OR a sole sprinkler test.)
Comments
Hydrants opened all the way
20 Yellow 1
❑
Test Flow 1
625
31 Yellow 2
0
Test Flow 2
935
Yellow 3
Test Flow 3
0
For method of calculating pltot flow with a red Pollard diffuser: see eq. 13, Walski and Lutes article 1990 Journal Management and
Operations AW WA. For yellow Pollard diffusers, a best 0t third order polynomial equation of the Pollard flow vs. pitot pressure gauge is
used.
Estimated Consumption (gal) 4680
For use for water audit
Signature of Tester:^^
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