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HomeMy WebLinkAboutWaterline Design and Fire Flow Analysis Water Line Design Report Fire Flow Analysis for Caprock Crossing College Station, Texas September 2012 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 ,� OE rFX • 979.764.3900 s i *: *' i * r • DEVEN L. DOYEN • • _ SiONAL 043 ouroIIIop 9 - rZ FIRM # 12327 12.04' SCHULTZ ENGINEERING, LLC q./7.12 q :So �.K r 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. General Note: The proposed 8" & 12" waterlines will connect to the existing 12" waterline along to Old Arrington Road. Land Use: Commercial Design Criteria/Analysis Primary Water Supply: Existing 12" waterline along 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 Domestic Use The estimated domestic demands used for the commercial lots were set to 50 GPM at all 8" stub outs. Water System Analysis: WaterCad was used to model the proposed water system. Exhibit A shows the layout of the proposed waterline. The proposed 8" & 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, 76.1 psi, is a result of the Domestic and Fire Flow at FH -2 and FH -3. With the domestic demand only, the lowest residual pressure is computed to be 83.8psi. 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 _ _ , • ....... — --.7 , ' - NGTON \f -----• ..r� y ` ` . _ R� N � ( ' ! u © 6I z r � I I o _. i I �� /I I I i i (1 ff . } 3 .m �\ li i I I co 0 r i / - n _ ) + l f i D � r i D i 1 i , , /C I N `N � 11 ■ 7 , I N ` i � n f \.. \ I CI `Z1 Sa ii ny n �� � ` Jf I I cn a I ,.,?,/ 1 I I \_ _�_= __ __ �__ _'_� - 11 A ----- __ . . I f 1 ■ \ �\ / N / - \ \\ / / / / °/. IN i C . 'yo \ \\ �' y / \ \ \� \ �'` /` k I \ A. \\ \14 , I \(> \ At I ii 11 m 1. \ N, vi.1 + •-• I— i \\ F./ _.....„.....,' - - lc N L,,i .,.._ ..i.....s. I 4 P '- -.._.' ... N. ) rri C D I / \.).‘.. . :Niliftlililit Exhibit B Fire Hydrant Test Report fCoiiege Station Utilities Reliable, Affordable, Community Owned Date test completed Wednesday June 20,2012 Time completed 2:00 P.M. Test completed by Vincent Rodriguez Witness Lawrence Chavarria FLOW HYDRANT Location Old Arrington Rd. Nozzle size 2.5 Hydrant number R -063 Pitot reading in PSI 75 Flow in G.P.M. 1455 a t l � q Y �§L z, ,F :: :.d", i 'a,.,, 3" „p?� s <„ C - t m. k 'v u.., "y A „P e,re ,I<,✓ f 1W f �av s p � .,; ,fi za at STATIC HYDRANT Location 985 William D. Fitch Hydrant number R -014 Static PSI 84 Residual PSI 83 :ykE¢;��.. .?"53 x ,.AF; an ,> 4 ¢.'�, �' k„ -.. a: r aP'�.r 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 J -1 FH1 12 PVC 150 250 0.71 P -2 139 FH1 J -3 12 PVC 150 250 0.71 P -3 504 J -3 J -4 12 PVC 150 200 0.57 P -4 14 J -4 FH2 12 PVC 150 150 0.43 P -5 427 FH2 J -6 12 PVC 150 150 0.43 P -6 186 J -6 FH3 12 PVC 150 100 0.28 P -7 357 FH3 J -8 12 PVC 150 100 0.28 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 J -11 J -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 J -8 8 PVC 150 -50 0.32 P -RES 20 R -1 J -1 12 PVC 150 250 0.71 Exhibit C WaterCAD Analysis Summary Junction Analysis - Domestic Flow Demand Junction Elevation (ft) (GPM) Pressure (PSI) J -1 317.05 0 83.8 FH1 314.73 0 84.8 J -3 312.56 0 85.7 J -4 311.27 0 86.3 FH2 311.32 0 86.2 J -6 314.26 0 85 FH3 311.87 0 86 J -8 308.48 0 87.4 J -9 303.41 0 89.6 J -10 303.41 50 89.6 J -11 306 0 88.6 J -12 313.38 50 85.4 J -13 311.93 50 86 J -14 314.41 50 84.9 J -15 307.86 50 87.7 Exhibit D WaterCAD Analysis Summary — Domestic and Fire Flow Demand Exhibit D WaterCAD Analysis Summary Pipe Analysis - Fire Flow - Fire Hydrant 1 & 2 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 J -1 FH1 12 PVC 150 2,750 7.8 P -2 139 FH1 J -3 12 PVC 150 1,500 4.26 P -3 504 J -3 J -4 12 PVC 150 1,450 4.11 P -4 14 J -4 FH2 12 PVC 150 1,400 3.97 P -5 427 FH2 1 -6 12 PVC 150 150 0.43 P -6 186 J -6 FH3 12 PVC 150 100 0.28 P -7 357 FH3 1 -8 12 PVC 150 100 0.28 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 J -11 J -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 J -8 8 PVC 150 -50 0.32 P -RES 20 R -1 J -1 12 PVC 150 2,750 7.8 Exhibit D WaterCAD Analysis Summary Junction Analysis - Fire Flow Analysis - FH 1 & FH 2 Demand Junction Elevation (ft) (GPM) Pressure (PSI) J -1 317.05 0 80.5 FH1 314.73 1,250 80.1 J -3 312.56 0 80.8 J -4 311.27 0 80.5 FH2 311.32 1,250 80.5 J -6 314.26 0 79.2 FH3 311.87 0 80.2 J -8 308.48 0 81.7 J -9 303.41 0 83.9 J -10 303.41 50 83.9 J -11 306 0 85.3 J -12 313.38 50 80.5 J -13 311.93 50 80.2 J -14 314.41 50 79.1 J -15 307.86 50 82 Exhibit D WaterCAD Analysis Summary Pipe Analysis - Fire Flow - Fire Hydrant 2 & 3 Hazen - Pipe Pipe Flow Velocity Number Length (ft) Start Node End Node Size (in) Pipe Material William C- (GPM ) (ft/s) Value P -1 250 J -1 FH1 12 PVC 150 2,750 7.8 P -2 139 FH1 J -3 12 PVC 150 2,750 7.8 P -3 504 J -3 J -4 12 PVC 150 2,700 7.66 P -4 14 J -4 FH2 12 PVC 150 2,650 7.52 P -5 427 FH2 J -6 12 PVC 150 1,400 3.97 P -6 186 J -6 FH3 12 PVC 150 1,350 3.83 P -7 357 FH3 1 -8 12 PVC 150 100 0.28 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 J -11 J -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 J -8 8 PVC 150 -50 0.32 P -RES 20 R -1 J -1 12 PVC 150 2,750 7.8 Exhibit D WaterCAD Analysis Summary Junction Analysis - Fire Flow Analysis - FH 2 & FH 3 Junction Elevation (ft) Demand Pressure (PSI) (GPM) J -1 317.05 0 80.5 FH1 314.73 0 80.1 J -3 312.56 0 80.3 J -4 311.27 0 78.2 FH2 311.32 1,250 78.1 J -6 314.26 0 76.2 FH3 311.87 1,250 76.9 J -8 308.48 0 78.4 J -9 303.41 0 80.6 J -10 303.41 50 80.6 J -11 306 0 85.3 J -12 313.38 50 79.9 J -13 311.93 50 77.9 J -14 314.41 50 76.1 J -15 307.86 50 78.6 Exhibit D WaterCAD Analysis Summary Pipe Analysis - Fire Flow - Fire Hydrant 1 & 3 Pipe Hazen - Length (ft) Start Node End Node Size (in) Pipe Material William C Pipe Flow Velocity Number (GPM) (ft/s) Value P -1 250 1 -1 FH1 12 PVC 150 2,750 7.8 P -2 139 FH1 J -3 12 PVC 150 1,500 4.26 P -3 504 J -3 1 -4 12 PVC 150 1,450 4.11 P -4 14 J -4 FH2 12 PVC 150 1,400 3.97 P -5 427 FH2 J -6 12 PVC 150 1,400 3.97 P -6 186 J -6 FH3 12 PVC 150 1,350 3.83 P -7 357 FH3 J -8 12 PVC 150 100 0.28 P-8 299 1 -8 1-9 12 PVC 150 50 0.14 P -9 13 J -9 J -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 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 J -8 8 PVC 150 -50 0.32 P -RES 20 R -1 J -1 12 PVC 150 2,750 7.8 Exhibit D WaterCAD Analysis Summary Junction Analysis - Fire Flow Analysis - FH 1 & FH 3 Junction Elevation (ft) (GPM) Pressure (PSI) J -1 317.05 0 80.5 FH1 314.73 1,250 80.1 J -3 312.56 0 80.8 J -4 311.27 0 80.5 FH2 311.32 0 80.5 J -6 314.26 0 78.5 FH3 311.87 1,250 79.3 J -8 308.48 0 80.8 J -9 303.41 0 83 J -10 303.41 50 83 J -11 306 0 85.3 J -12 313.38 50 80.5 J -13 311.93 50 80.2 J -14 314.41 50 78.5 J -15 307.86 50 81