HomeMy WebLinkAboutWater Report Water Line Design Report
Fire Flow Analysis
for
Caprock Crossing 12" Waterline Extension
College Station, Texas
March 2015
Prepared For:
Brazos Texas Land Development, LLC
C/O CapRock Texas
110 Lincoln Avenue, Suite 103
College Station, Texas 77840
Prepared By:
Schultz Engineering, LLC
TBPE Firm Registration No. 12327
2730 Longmire, Suite A ,,�,.,►„
College Station, Texas 77845 10 OF
979.764.3900 • .. _ •
,*1 1'‘ %*
:*
tDEVEN L. DOYEN e
\i •>
o
/IS
FIRM # 12327
SCHULTZ ENGINEERING, LLC
General Information
Location: Caprock Crossing is located on the south side of State Highway 40
between State Highway 6 and Arrington Road in southern College
Station. The 12"water line extension will extend south from the Greens
Prairie West&Public Way intersection
General Note: The proposed 12" waterline will connect to the existing 12" waterline
along to Greens Prairie West.
Land Use: Commercial
Design Criteria/Analysis
Primary Water Supply: Existing 12"waterline along Greens Prairie Road West&Old Arrington
Road.
Existing System Pressure Tests: (See Exhibit B)
Flow Hydrant: Existing Hydrant on Old Arrington Road
Flowrate: 1455 gpm
Static Pressure: 84 psi
Residual Pressure: 83 psi
Fire Hydrant Flow: 2,500 gpm for Commercial A future fire hydrant will be needed for the
future commercial developments and has been modeled,but will not be
constructed until development of the commercial lots.
Domestic Use The estimated domestic demands used for the commercial lots were set
to 50 GPM at all 8"stub outs. The domestic demand for Greens Prairie
Center Phase 2A Lot 15R is set to 100 GPM and 250 GPM for Lot 1R.
Water System Analysis: WaterCad was used to model the proposed water system. Exhibit A
shows the layout of the proposed waterlines. The proposed 12"water
lines are in accordance with the BCS Water Design Guidelines. This
report provides the results of the water system analysis under the
domestic demand and domestic demand with fire hydrant flow. The
lowest pressure in the system, 70.5 psi, is a result of the Domestic and
Fire Flow at FH-5 and FH-6. With the domestic demand only,the lowest
residual pressure is computed to be 83.6 psi. Each of these pressures
exceeds the 20 psi and 35 psi minimum pressure requirements,
respectively. The maximum velocity in all pipes is less than 12 fps for
all scenarios.
Exhibits: Exhibit A—Water Layout
Exhibit B—Fire Hydrant Test Report
Exhibit C—WaterCad Analysis Summary—Domestic Demand
Exhibit D—WaterCad Analysis Summary—Domestic and Fire Flow Demand
Conclusion
The proposed public water lines meet or exceed all of the design criteria for the City of College
Station. It will provide adequate water pressure and flowrate for domestic and fire flow demands.
Exhibit A
Water Layout
Exhibit B
Fire Hydrant Test Report
cfCollege Station Utilities
lir Reliable,Affordable, Community Owned
Date test completed Wednesday June 20,2012
Time completed 2:00 P.M.
Test completed by Vincent Rodriquez
Witness Lawrence Chavarria
'..,1;24r ;t;11,11VAV44..,
FLOW HYDRANT
Location Old Aron Rd,
Nozzle size
Hydrant number R-08.1
Pitot reading in PSI 71
Flow in G.P.M. 'l
STATIC HYDRANT
Location 985 William D, Fitch
Hydrant number R-014
Static PSI iti
Residual PSI
Comments Requested
Exhibit C
WaterCAD Analysis Summary—
Domestic Demand
Exhibit C
WaterCAD Analysis Summary
Pipe Analysis- Domestic Flow
Hazen-
Pipe William C- Pipe Flow Velocity
Number Length (ft) Start Node End Node Size(in) Pipe Material Value (GPM) (ft/s)
P-1 250 1-1 FH1 12 PVC 150 600 1.7
P-2 139 FH1 J-3 12 PVC 150 600 1.7
P-3 504 J-3 J-4 12 PVC 150 550 1.56
P-4 14 J-4 FH2 12 PVC 150 500 1.42
P-5 427 FH2 1-6 12 PVC 150 500 1.42
P-6 186 J-6 FH3 12 PVC 150 350 0.99
P-8 299 J-8 J-9 12 PVC 150 50 0.14
P-9 13 J-9 J-10 12 PVC 150 50 0.14
P-10 612 1-11 1-1 8 PVC 150 0 0
P-12 61 J-12 J-3 8 PVC 150 -50 0.32
P-13 61 J-13 J-4 8 PVC 150 -50 0.32
P-14 66 J-14 J-6 8 PVC } 150 -50 0.32
P-15 78 J-15 1-8 8 PVC 150 -50 0.32
P-RES 20 R-1 J-1 12 PVC 150 600 1.7
P-17 31 FH3 J-16 12 PVC 150 350 0.99
P-18 326 1-16 1-8 12 PVC 150 100 0.28
P-19 434 J-16 J-17 12 PVC 150 250 0.71
P-20 101 1-17 FH 12 j PVC 150 0 0
Exhibit C
WaterCAD Analysis Summary
Junction Analysis- Domestic Flow
Demand
Junction Elevation(ft), (GPM) Pressure(PSI)
1-1 317.05 0 83.6 _
FH1 314.73 0 84.6
1-3 312.56 _ 0 85.5
1-4 311.27 0 85.9
FH2 311.32 0 85.9
J-6 314.26 100 84.5
FH3 311.87 0 85.5
1-8 308.48 0 87
J-9 303.41 0 89.1
J-10 303.41 50 89.1
J-11 306 0 88.4
1-12 313.38 50 85.1
1-13 311.93 50 ! 85.6
J-14 314.41 50 84.4
J-15 307.8.6 50 87.2
1-16 312 0 85.4
1-17 310 250 86.3
FH 313.02 0 85
Exhibit D
WaterCAD Analysis Summary—
Domestic and Fire Flow Demand
Exhibit D
WaterCAD Analysis Summary
Pipe Analysis- Fire Flow- Fire Hydrant
Hazen-
Pipe William C- Pipe Flow Velocity
Number Length(ft) Start Node End Node Size(in) Pipe Material Value (GPM) (ft/s)
P-1 250 1-1 I FH1 12 PVC 150 3,100 8.79
P-2 139 FH1 J-3 12 PVC 150 3,100 8.79
P-3 504 J-3 J-4 12 PVC 150 3,050 8.65
P-4 14 1-4 FH2 12 PVC 150 3,000 8.51
P-5 427 FH2 1-6 12 PVC 150 3,000 8.51
P-6 186 J-6 FH3 12 PVC 150 2,850 8.08
P-8 299 J-8 J-9 12 PVC 150 50 0.14
P-9 13 1-9 1-10 12 PVC 150 50 0.14
P-10 612 J-11 J-1 8 PVC 150 0 0
P-12 61 J-12 J-3 8 ! PVC 1 150 -50 0.32
P-13 61 J-13 J-4 8 PVC 150 -50 0.32
P-14 66 1-14 J-6 8 PVC 150 -50 0.32
P-15 78 1-15 J-8 8 PVC 150 -50 0.32
P-RES 20 R-1 J-1 12 PVC 150 3,100 8.79
P-17 31 FH3 1-16 12 PVC 150 1,600 4.54
P-18 326 J-16 J-8 12 PVC 150 100 0.28
P-19 434 146 147 12 PVC 150 1,500 4.26
P-20 101 1-17 FH 12 PVC 150 1,250 3.55
Exhibit D
WaterCAD Analysis Summary
Junction Analysis- Fire Flow Analysis
Demand
Junction Elevation(ft) (GPM) Pressure(PSI)
1-1 317.05 0 79.7
FH1 314.73 0 79
J-3 312.56 0 78.9
1-43 11.27 0 76.2
FH2 311.32 0 76
J-6 314.26 100 72
FH3 311.87 1,250 72
J-8 308.48 0 73.4
J-9 303.41 0 _ 75.6
J-10 303.41 50 75.6
J-11 306 0 84.4
J-12 313.38 50 78.6
J-13 311.93 50 75.9
J-14 314.41 50 72
J-15 307.86 50 _73.6
J-16 312 0 71.9
J-17 310 250 71.9
FH 313.02 1,250 70.5