HomeMy WebLinkAboutWATER REPORTWater System Report
for
Meadow Creek Subdivision, Phase 5
College Station, Texas
July, 2012
Prepared BJ�
Schultz Engineering, LLC
TBPE Firm Registration No. 12327
2730 Longmire, Suite A
College Station, Texas 77845
979.764.3900
OF
. .....................s.
JOSEPH P. SCHULTZ
.............................
F -12327
SCHULTZ ENGINEERING, LLC.
General Information
Location: Meadowcreek Subdivision, Phase 5 is located in southern Brazos
County, just off Koppe Bridge Road near Wellborn. It is immediately
adjacent to Phase 4B and Phase 3 of the subdivision.
General Note: There are 59 lots in Phase 5.
Land Use: Single Family Residential
Design Criteria/Analysis
Primary Water Supply: Existing 12" line along Koppe Bridge Road. It is connected to Phase 1
by an 8" line. The supply for Phase 5 will connect to an 8" line
constructed with Phase 4B and an 8" line constructed with Phase 3.
Existing System Pressure Tests:
Flow Hydrant - See Exhibit B
Flowrate: 1230 gpm
Static Pressure: 62 psi
Residual Pressure: 51 psi
Exhibits: Exhibit A — Location Map
Exhibit B — Hydrant Flow Test Results
Exhibit C — Pipe and Junction Analysis — Domestic Demand
Exhibit D — Pipe and Junction Analysis — Fire Flow Demand @ FH 1
Exhibit E — Pipe and Junction Analysis — Fire Flow Demand @ FH 2
Fire Flow: 1,000 gpm for Single Family Residential
Domestic Use 1.5 gpm per lot for Single Family Residential
Conclusion
The proposed 8" 6" and 4" water lines are in accordance with the BCS
Water Design Guidelines. This report provides the results of the water
system analysis under the fire flow and domestic demand requirements,
(1,155 gpm) which produced the lowest pressure in the system. The
lowest residual pressure with the fire flow and domestic demand occurs
with the fire flow at Fire Hydrant 2 and is computed to be 47.4 psi. With
the domestic demand only, the residual pressure is computed to be 62
psi. Each of these pressures exceed the 20 psi and 35 psi minimum
pressure requirements, respectively. The maximum velocity in all pipes
is less than 12 fps for all scenarios.
The proposed water system for Meadowcreek Subdivision, Phase 5
meets or exceeds all of the design criteria for the City of College Station.
It will provide adequate water pressure and flow for both domestic and
fire demands.
EXHIBIT A
WATER SYSTEM LAYOUT
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EXHIBIT B
WATER SYSTEM FIRE HYDRANT FLOW TEST REPORT
Exhibit B
SCHULTZ ENGINEERING, LLC
FIRM #4538
WATER SYSTEM FIRE HYDRANT FLOW TEST REPORT
Date:
6/6/2012
Wellborn SUD
Water System Owner:
Development Project:
Meadowcreek Subdivision - Phase 4B
Flow Test Location: Intersection of Sagewood and Cloud Lane
Nozzle size (in.): 2 1/2" Discharge Coeff: (c) = 0.90
Pitot Reading (psi): 54 Flowrate Formula: Q= 29.84cd
1230 c = discharge coeff.
Flowrate (gpm): d = orifice size (in)
P = pitot pressure (psi)
Pressure Gauge Location: Sagewood Drive (Block 10 Lot 32)
Static Pressure (psi): 62
Residual Pressure (psi):
51
Computed Discharge at 20 psi Residual Pressure: QR = 2190 fpm
Discharge Formula: QR = QF X (hr 0.54 /hf 0 .54
Note: The flow test and report were prepared in accordance with NFPA 291.
Report Prepared by:
Others Present:
Joseph P. Schultz
Clenden Adams
Britt Curless
EXHIBIT C
WATERCAD ANALYSIS SUMMARY
Exhibit C
WaterCAD Analysis Summary
Junction Analysis - Domestic Demand
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Sewer System Report
for
Meadowereek Subdivision, Phase 5
College Station, Texas
July 2012
Prepared By:
z ultz Engineering, LLC
TBPE Firm No. 12327
P.O. Box 11995
College Station, TX 77842
2730 Longmire Drive, Suite A
College Station, Texas 77845
(979) 764 -3900
OF
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. ................... .
JOSEPH P. SCHULTZ
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/ -7 -/ f-/ Z
F -12327
SCHULTZ ENGINEERING, LLC.
General Information
Location: Meadowcreek Subdivision, Phase 5 is located in southern Brazos
County, just off Koppe Bridge Road near Wellborn. It is immediately
adjacent to Phases 1, 3 and 4B of the subdivision.
General Note: There are 59 lots in Phase 5. All of the lots flow into a sewer line that
was constructed with Phase 4A.
Land Use: Single Family Residential
Design Criteria
Primary Sewer Outfall: 10" line on Stewart Lane that flows directly into the wastewater
treatment plant.
Domestic Demand:
Avg. Pop Density: 2.67 people per lot
Average Flow: 100 gpd/cap or 267 gpd per lot
Peaking Factor: 4
Pipe: PVC D3034 SDR 26
Applicable Exhibits: Exhibit A — Sewer System Schematic
Exhibit B — Sanitary Sewer Analysis Spreadsheet
Note: The design information and analysis shown on the Exhibits includes the sewer system for
Phases 4A, 4B and 5.
Conclusion
The sewer system for the Meadowcreek Subdivision, Phase 5, consists of
a series of 6" and 8" lines that tie to an existing 8" line built with Phase
3. The analysis in Exhibit B checks the calculated slope required to pass
the estimated flow against the design slope shown on the plans. The
spreadsheet indicates the design slope is much greater than the minimum
computed slope, so we conclude that the system is more than capable of
carrying the anticipated flows from the subdivision.
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